FPCN11 CWTO 202030
Forecasts for Southern Ontario and the National Capital Region issued
by Environment Canada at 3:30 p.m. EST Friday 20 December 2024 for
tonight Saturday and Saturday night.
The next scheduled forecast will be issued at 5:00 a.m. EST Saturday.

City of Toronto.
Tonight..Periods of light snow ending this evening then clearing.
 Wind north 20 km/h gusting to 40. Low minus 9. Wind chill minus 9
 this evening and minus 16 overnight.
Saturday..Sunny. Wind north 20 km/h becoming light late in the
 afternoon. Temperature steady near minus 8. Wind chill near
 minus 17. UV index 1 or low.
Saturday night..Clear. Wind up to 15 km/h. Low minus 14. Wind chill
 minus 15 in the evening and minus 22 overnight.

Windsor - Leamington - Essex County.
Tonight..A few flurries ending before morning then mainly cloudy.
 Local amount 2 cm. Wind north 30 km/h gusting to 50. Low minus 7.
 Wind chill minus 16 overnight.
Saturday..A mix of sun and cloud. Wind northwest 20 km/h becoming
 light early in the afternoon. High minus 3. Wind chill minus 13 in
 the morning and minus 7 in the afternoon. UV index 1 or low.
Saturday night..Partly cloudy. Becoming clear before morning. Wind up
 to 15 km/h. Low minus 11. Wind chill minus 10 in the evening and
 minus 16 overnight.

Chatham-Kent - Rondeau Park.
Tonight..Flurries. Local amount 5 cm. Wind north 30 km/h gusting to
 50. Low minus 7. Wind chill minus 16 overnight.
Saturday..A mix of sun and cloud with 40 percent chance of flurries.
 Wind northwest 20 km/h becoming light early in the afternoon. High
 minus 3. Wind chill minus 13 in the morning and minus 7 in the
 afternoon. UV index 1 or low.
Saturday night..Partly cloudy with 30 percent chance of flurries in
 the evening. Becoming clear before morning. Wind up to 15 km/h. Low
 minus 11. Wind chill minus 10 in the evening and minus 16 overnight.

Sarnia - Petrolia - Western Lambton County.
Tonight..Mainly cloudy. Flurries and local snow squalls beginning
 late this evening. Local amount 15 to 25 cm. Local blowing snow
 overnight. Wind north 30 km/h gusting to 50. Low minus 7. Wind chill
 minus 16 overnight.
Saturday..Flurries and local snow squalls. Local amount 10 to 15 cm.
 Local blowing snow. Wind north 30 km/h. Temperature steady near
 minus 5. Wind chill near minus 16. UV index 1 or low.
Saturday night..Flurries and local snow squalls. Local amount 5 to
 10 cm. Wind northwest 20 km/h becoming light after midnight. Low
 minus 12. Wind chill near minus 14.

Watford - Pinery Park - Eastern Lambton County.
Tonight..Mainly cloudy. Flurries and local snow squalls beginning
 late this evening. Local amount 15 to 25 cm. Local blowing snow
 overnight. Wind north 30 km/h gusting to 50. Low minus 7. Wind chill
 minus 14 overnight.
Saturday..Flurries and local snow squalls. Local amount 10 to 15 cm.
 Local blowing snow. Wind up to 15 km/h. Temperature steady near
 minus 5. Wind chill near minus 11. UV index 1 or low.
Saturday night..Flurries and local snow squalls. Local amount 5 to
 10 cm. Wind up to 15 km/h. Low minus 12. Wind chill minus 9 in the
 evening and minus 14 overnight.

Rodney - Shedden - Western Elgin County.
Tonight..Mainly cloudy. 60 percent chance of flurries before morning.
 Wind north 30 km/h gusting to 50. Low minus 7. Wind chill minus 14
 overnight.
Saturday..Mainly cloudy with 60 percent chance of flurries. Wind up
 to 15 km/h. Temperature steady near minus 5. Wind chill near
 minus 10. UV index 1 or low.
Saturday night..Mainly cloudy. 40 percent chance of flurries in the
 evening. Clearing before morning. Wind up to 15 km/h. Low minus 12.
 Wind chill minus 9 in the evening and minus 15 overnight.

St. Thomas - Aylmer - Eastern Elgin County.
Tonight..Mainly cloudy. 60 percent chance of flurries before morning.
 Wind northeast 30 km/h gusting to 50 becoming northwest 20 gusting
 to 40 near midnight. Low minus 9. Wind chill minus 8 this evening
 and minus 17 overnight.
Saturday..Mainly cloudy. 60 percent chance of flurries in the
 morning. Wind up to 15 km/h. High minus 5. Wind chill minus 8 in the
 morning and minus 13 in the afternoon. UV index 1 or low.
Saturday night..Mainly cloudy. Clearing before morning. Wind up to 15
 km/h. Low minus 16. Wind chill minus 13 in the evening and minus 19
 overnight.

Strathroy - Komoka - Western Middlesex County.
Tonight..Mainly cloudy. Flurries beginning after midnight. Risk of
 snow squalls over western sections overnight. Local amount 5 cm over
 western sections. Wind northeast 30 km/h gusting to 50. Low
 minus 10. Wind chill minus 10 this evening and minus 17 overnight.
Saturday..Flurries. Risk of snow squalls over western sections in the
 morning. Local amount 10 cm over western sections. Wind up to 15
 km/h. High minus 8. Wind chill near minus 16.
Saturday night..Mainly cloudy. 40 percent chance of flurries in the
 evening. Clearing before morning. Wind up to 15 km/h. Low minus 18.
 Wind chill near minus 23.

London - Parkhill - Eastern Middlesex County.
Tonight..Mainly cloudy. Flurries beginning after midnight. Risk of
 snow squalls over western sections overnight. Local amount 5 cm over
 western sections. Wind northeast 30 km/h gusting to 50. Low
 minus 10. Wind chill minus 10 this evening and minus 17 overnight.
Saturday..Flurries. Risk of snow squalls over western sections in the
 morning. Local amount 10 cm over western sections. Wind up to 15
 km/h. High minus 8. Wind chill near minus 16.
Saturday night..Mainly cloudy. 30 percent chance of flurries in the
 evening. Clearing before morning. Wind up to 15 km/h. Low minus 18.
 Wind chill near minus 23.

Simcoe - Delhi - Norfolk.
Tonight..Mainly cloudy. 40 percent chance of flurries before morning.
 Wind northeast 30 km/h gusting to 50 becoming northwest 20 gusting
 to 40 near midnight. Low minus 9. Wind chill minus 8 this evening
 and minus 17 overnight.
Saturday..A mix of sun and cloud with 40 percent chance of flurries
 in the morning. Becoming sunny in the afternoon. Wind up to 15 km/h.
 High minus 5. Wind chill minus 14 in the morning and minus 8 in the
 afternoon. UV index 1 or low.
Saturday night..Clear. Wind up to 15 km/h. Low minus 16. Wind chill
 minus 12 in the evening and minus 19 overnight.

Dunnville - Caledonia - Haldimand.
Tonight..Periods of light snow ending this evening then mainly
 cloudy. Wind northeast 30 km/h gusting to 50 becoming northwest 20
 gusting to 40 near midnight. Low minus 8. Wind chill minus 7 this
 evening and minus 13 overnight.
Saturday..Sunny. Wind up to 15 km/h. High minus 6. Wind chill near
 minus 14. UV index 1 or low.
Saturday night..Clear. Wind up to 15 km/h. Low minus 17. Wind chill
 minus 14 in the evening and minus 20 overnight.

Woodstock - Tillsonburg - Oxford County.
Tonight..Mainly cloudy. 40 percent chance of flurries before morning.
 Wind north 30 km/h gusting to 50. Low minus 10. Wind chill minus 8
 this evening and minus 17 overnight.
Saturday..A mix of sun and cloud with 40 percent chance of flurries
 in the morning. Becoming sunny in the afternoon. Wind up to 15 km/h.
 High minus 5. Wind chill minus 16 in the morning and minus 11 in the
 afternoon. UV index 1 or low.
Saturday night..Clear. Wind up to 15 km/h. Low minus 17. Wind chill
 near minus 20.

Brantford - County of Brant.
Tonight..Periods of light snow ending this evening then mainly
 cloudy. Wind north 30 km/h gusting to 50. Low minus 10. Wind chill
 minus 8 this evening and minus 17 overnight.
Saturday..A mix of sun and cloud. Becoming sunny in the morning. Wind
 up to 15 km/h. High minus 5. Wind chill minus 16 in the morning and
 minus 11 in the afternoon. UV index 1 or low.
Saturday night..Clear. Wind up to 15 km/h. Low minus 17. Wind chill
 near minus 20.

Niagara.
Tonight..Flurries at times heavy ending near midnight then mainly
 cloudy with 30 percent chance of flurries. Local amount 2 cm. Wind
 northeast 30 km/h gusting to 50 becoming northwest 20 gusting to 40
 near midnight. Low minus 7. Wind chill minus 7 this evening and
 minus 12 overnight.
Saturday..A mix of sun and cloud. 30 percent chance of flurries late
 in the afternoon. Wind becoming northwest 20 km/h early in the
 afternoon. Temperature steady near minus 7. Wind chill near
 minus 14. UV index 1 or low.
Saturday night..Partly cloudy with 40 percent chance of flurries.
 Wind up to 15 km/h. Low minus 13. Wind chill minus 11 in the evening
 and minus 20 overnight.

City of Hamilton
Burlington - Oakville.
Tonight..Periods of light snow ending near midnight then mainly
 cloudy. Wind northeast 30 km/h gusting to 50 becoming northwest 20
 gusting to 40 near midnight. Low minus 10. Wind chill minus 8 this
 evening and minus 17 overnight.
Saturday..Sunny. Wind up to 15 km/h. High minus 6. Wind chill
 minus 15 in the morning and minus 10 in the afternoon. UV index 1 or
 low.
Saturday night..Clear. Wind up to 15 km/h. Low minus 17. Wind chill
 minus 12 in the evening and minus 20 overnight.

Halton Hills - Milton
Mississauga - Brampton.
Tonight..Periods of light snow ending this evening then clearing.
 Wind north 20 km/h gusting to 40. Low minus 9. Wind chill minus 9
 this evening and minus 15 overnight.
Saturday..Sunny. Wind up to 15 km/h. High minus 6. Wind chill
 minus 15 in the morning and minus 10 in the afternoon. UV index 1 or
 low.
Saturday night..Clear. Wind up to 15 km/h. Low minus 17. Wind chill
 minus 12 in the evening and minus 20 overnight.

Caledon
Orangeville - Grand Valley - Southern Dufferin County.
Tonight..Periods of light snow ending this evening then mainly
 cloudy. Wind north 20 km/h gusting to 40. Low minus 11. Wind chill
 minus 10 this evening and minus 17 overnight.
Saturday..A mix of sun and cloud. Wind up to 15 km/h. High minus 7.
 Wind chill near minus 16. UV index 1 or low.
Saturday night..Partly cloudy. Becoming clear late in the evening.
 Wind up to 15 km/h. Low minus 19. Wind chill near minus 22.

Vaughan - Richmond Hill - Markham
Pickering - Oshawa - Southern Durham Region.
Tonight..Periods of light snow ending this evening then clearing.
 Wind north 20 km/h gusting to 40. Low minus 11. Wind chill minus 9
 this evening and minus 17 overnight.
Saturday..Sunny. Wind becoming northwest 30 km/h early in the
 afternoon then light late in the afternoon. High minus 9. Wind chill
 near minus 19. UV index 1 or low.
Saturday night..Clear. Wind northwest 20 km/h becoming light after
 midnight. Low minus 20. Wind chill minus 28 in the evening and
 minus 23 overnight. Risk of frostbite.

Newmarket - Georgina - Northern York Region
Uxbridge - Beaverton - Northern Durham Region.
Tonight..Periods of light snow ending this evening then mainly
 cloudy. Wind north 20 km/h gusting to 40. Low minus 12. Wind chill
 minus 12 this evening and minus 20 overnight.
Saturday..Sunny. Wind becoming northwest 30 km/h early in the
 afternoon then light late in the afternoon. High minus 10. Wind
 chill near minus 20. UV index 1 or low.
Saturday night..Clear. Wind northwest 20 km/h becoming light after
 midnight. Low minus 19. Wind chill near minus 27.

Goderich - Bluewater - Southern Huron County.
Tonight..Mainly cloudy. 30 percent chance of flurries this evening.
 Flurries beginning after midnight. Risk of snow squalls near Lake
 Huron overnight. Local amount 5 cm near Lake Huron. Wind northeast
 30 km/h gusting to 50. Low minus 10. Wind chill minus 10 this
 evening and minus 17 overnight.
Saturday..Flurries. Risk of snow squalls near Lake Huron in the
 morning. Local amount 10 cm near Lake Huron. Wind up to 15 km/h.
 High minus 8. Wind chill near minus 18.
Saturday night..Partly cloudy with 40 percent chance of flurries in
 the evening. Becoming clear overnight. Wind up to 15 km/h. Low
 minus 18. Wind chill near minus 23.

Wingham - Blyth - Northern Huron County.
Tonight..Mainly cloudy. 30 percent chance of flurries this evening.
 Flurries beginning after midnight. Risk of snow squalls near Lake
 Huron overnight. Local amount 5 cm near Lake Huron. Wind northeast
 30 km/h gusting to 50. Low minus 10. Wind chill minus 10 this
 evening and minus 17 overnight.
Saturday..Flurries. Risk of snow squalls near Lake Huron in the
 morning. Local amount 5 cm near Lake Huron. Wind up to 15 km/h. High
 minus 8. Wind chill near minus 18.
Saturday night..Partly cloudy with 40 percent chance of flurries in
 the evening. Becoming clear overnight. Wind up to 15 km/h. Low
 minus 18. Wind chill near minus 23.

Stratford - Mitchell - Southern Perth County
Listowel - Milverton - Northern Perth County.
Tonight..Mainly cloudy. 60 percent chance of flurries before morning.
 Wind north 20 km/h gusting to 40. Low minus 11. Wind chill minus 10
 this evening and minus 18 overnight.
Saturday..A mix of sun and cloud with 60 percent chance of flurries.
 Wind up to 15 km/h. High minus 8. Wind chill near minus 18. UV
 index 1 or low.
Saturday night..A few clouds. Wind up to 15 km/h. Low minus 18. Wind
 chill near minus 23.

Waterloo - Wellington.
Tonight..Periods of light snow ending early this evening then mainly
 cloudy. Wind north 20 km/h gusting to 40. Low minus 11. Wind chill
 minus 10 this evening and minus 17 overnight.
Saturday..A mix of sun and cloud. Wind becoming northwest 20 km/h
 early in the afternoon. High minus 7. Wind chill minus 13 in the
 morning and minus 19 in the afternoon. UV index 1 or low.
Saturday night..Partly cloudy. Becoming clear late in the evening.
 Wind northwest 20 km/h becoming light early in the evening. Low
 minus 19. Wind chill near minus 22.

Shelburne - Mansfield - Northern Dufferin County
Hanover - Dundalk - Southern Grey County.
Tonight..Periods of light snow. Wind north 20 km/h gusting to 40. Low
 minus 11. Wind chill minus 12 this evening and minus 17 overnight.
Saturday..Cloudy with 60 percent chance of flurries. Wind up to 15
 km/h. High minus 7. Wind chill minus 19 in the morning and minus 12
 in the afternoon.
Saturday night..Cloudy with 60 percent chance of flurries. Wind up to
 15 km/h. Low minus 16. Wind chill minus 14 in the evening and
 minus 19 overnight.

Innisfil - New Tecumseth - Angus.
Tonight..Periods of light snow ending this evening then mainly
 cloudy. Wind north 20 km/h gusting to 40. Low minus 12. Wind chill
 minus 12 this evening and minus 20 overnight.
Saturday..A mix of sun and cloud with 40 percent chance of flurries.
 Wind up to 15 km/h. High minus 10. Wind chill near minus 18. UV
 index 1 or low.
Saturday night..A few clouds. Wind up to 15 km/h. Low minus 19. Wind
 chill near minus 24.

Saugeen Shores - Kincardine - Southern Bruce County.
Tonight..Mainly cloudy with 30 percent chance of flurries this
 evening and after midnight. Flurries beginning after midnight. Risk
 of snow squalls near Lake Huron overnight. Local amount 5 cm near
 Lake Huron. Wind northeast 30 km/h gusting to 50. Low minus 11. Wind
 chill minus 10 this evening and minus 17 overnight.
Saturday..Flurries. Risk of snow squalls near Lake Huron in the
 morning. Local amount 5 cm near Lake Huron. Wind north 20 km/h
 becoming light in the morning. High minus 7. Wind chill minus 21 in
 the morning and minus 13 in the afternoon.
Saturday night..Mainly cloudy. 40 percent chance of flurries in the
 evening. Wind up to 15 km/h. Low minus 16. Wind chill minus 15 in
 the evening and minus 22 overnight.

Bruce Peninsula - Sauble Beach - Tobermory.
Tonight..Mainly cloudy. A few flurries beginning this evening. Local
 amount 2 cm. Wind north 30 km/h gusting to 50. Low minus 11. Wind
 chill minus 12 this evening and minus 18 overnight.
Saturday..Flurries. Local amount 2 to 4 cm. Wind up to 15 km/h. High
 minus 7. Wind chill minus 20 in the morning and minus 13 in the
 afternoon.
Saturday night..Flurries. Local amount 2 cm. Wind up to 15 km/h. Low
 minus 16. Wind chill minus 14 in the evening and minus 19 overnight.

Owen Sound - Blue Mountains - Northern Grey County.
Tonight..Flurries. Local amount 2 cm. Wind north 20 km/h gusting to
 40. Low minus 11. Wind chill minus 12 this evening and minus 17
 overnight.
Saturday..Flurries. Local amount 5 cm. Wind up to 15 km/h. High
 minus 7. Wind chill minus 19 in the morning and minus 12 in the
 afternoon.
Saturday night..Flurries. Local amount 2 cm. Wind up to 15 km/h. Low
 minus 16. Wind chill minus 14 in the evening and minus 19 overnight.

Barrie - Collingwood - Hillsdale.
Tonight..Flurries. Local amount 2 cm. Wind north 20 km/h gusting to
 40. Low minus 13. Wind chill minus 12 this evening and minus 19
 overnight.
Saturday..Flurries. Local amount 5 cm. Wind becoming northwest
 20 km/h late in the afternoon. High minus 13. Wind chill minus 19 in
 the morning and minus 25 in the afternoon.
Saturday night..Flurries ending overnight then clear. Local amount
 2 cm. Wind northwest 20 km/h becoming light late in the evening. Low
 minus 21. Wind chill near minus 28. Risk of frostbite.

Midland - Coldwater - Orr Lake.
Tonight..Periods of light snow ending this evening then clearing.
 Wind north 20 km/h gusting to 40. Low minus 14. Wind chill minus 12
 this evening and minus 21 overnight.
Saturday..Clear early in the morning then a mix of sun and cloud with
 40 percent chance of flurries. Wind becoming northwest 20 km/h late
 in the afternoon. High minus 13. Wind chill near minus 25. UV
 index 1 or low.
Saturday night..Partly cloudy with 30 percent chance of flurries in
 the evening. Becoming clear overnight. Wind northwest 20 km/h
 becoming light late in the evening. Low minus 21. Wind chill near
 minus 28. Risk of frostbite.

Orillia - Lagoon City - Washago
Peterborough - Kawartha Lakes.
Tonight..Periods of light snow ending this evening then mainly
 cloudy. Wind northeast 20 km/h gusting to 40 becoming light early
 this evening. Low minus 15. Wind chill minus 11 this evening and
 minus 20 overnight.
Saturday..Sunny. Wind up to 15 km/h. High minus 12. Wind chill near
 minus 21. UV index 1 or low.
Saturday night..Clear. Wind up to 15 km/h. Low minus 26. Wind chill
 minus 20 in the evening and minus 30 overnight. Risk of frostbite.

Belleville - Quinte - Northumberland.
Tonight..Periods of light snow ending this evening then cloudy. Wind
 north 20 km/h gusting to 40. Low minus 10. Wind chill minus 10 this
 evening and minus 16 overnight.
Saturday..Clearing in the morning. Wind becoming northwest 20 km/h in
 the morning. High minus 9. Wind chill near minus 19. UV index 1 or
 low.
Saturday night..Clear. Wind up to 15 km/h. Low minus 20. Wind chill
 minus 18 in the evening and minus 26 overnight.

Kingston - Prince Edward
Stirling - Tweed - South Frontenac.
Tonight..Cloudy with 60 percent chance of light snow. Wind north
 20 km/h gusting to 40. Low minus 10. Wind chill minus 10 this
 evening and minus 16 overnight.
Saturday..Clearing in the morning. Wind up to 15 km/h. High minus 9.
 Wind chill near minus 18. UV index 1 or low.
Saturday night..Clear. Wind up to 15 km/h. Low minus 20. Wind chill
 near minus 23.

Kaladar - Bannockburn - Bon Echo Park
City of Ottawa
Gatineau
Prescott and Russell
Smiths Falls - Lanark - Sharbot Lake.
Tonight..Cloudy. 40 percent chance of light snow this evening. Wind
 north 20 km/h becoming light near midnight. Low minus 13. Wind chill
 minus 15 this evening and minus 20 overnight.
Saturday..Clearing in the morning. Wind up to 15 km/h. High minus 11.
 Wind chill near minus 20. UV index 1 or low.
Saturday night..Clear. Wind up to 15 km/h. Low minus 22. Wind chill
 minus 20 in the evening and minus 26 overnight.

Bancroft - Hastings Highlands - Denbigh
Renfrew - Pembroke - Barry's Bay.
Tonight..Mainly cloudy. 40 percent chance of light snow this evening.
 Wind northeast 20 km/h gusting to 40 becoming light near midnight.
 Low minus 18. Wind chill minus 17 this evening and minus 25
 overnight.
Saturday..Clearing in the morning. Wind up to 15 km/h. Temperature
 steady near minus 19. Wind chill near minus 28. Risk of frostbite.
 UV index 1 or low.
Saturday night..Clear. Wind up to 15 km/h. Low minus 23. Wind chill
 near minus 28. Risk of frostbite.

Brockville - Leeds and Grenville
Cornwall - Morrisburg.
Tonight..Cloudy with 60 percent chance of light snow. Wind north
 20 km/h becoming light near midnight. Low minus 13. Wind chill
 minus 15 this evening and minus 20 overnight.
Saturday..Cloudy. Clearing late in the afternoon. Wind up to 15 km/h.
 High minus 11. Wind chill near minus 20. UV index 1 or low.
Saturday night..Clear. Wind up to 15 km/h. Low minus 22. Wind chill
 minus 20 in the evening and minus 26 overnight.

Port Carling - Port Severn
Bracebridge - Gravenhurst
Haliburton - Minden - Southern Haliburton County.
Tonight..Cloudy. 60 percent chance of light snow early this evening.
 Clearing overnight. Wind northeast 20 km/h gusting to 40 becoming
 light early this evening. Low minus 17. Wind chill minus 14 this
 evening and minus 23 overnight.
Saturday..Sunny. Wind up to 15 km/h. High minus 15. Wind chill near
 minus 26. UV index 1 or low.
Saturday night..Clear. Wind up to 15 km/h. Low minus 27. Wind chill
 minus 24 in the evening and minus 31 overnight. Risk of frostbite.

Town of Parry Sound - Rosseau - Killbear Park
Huntsville - Baysville
Oxtongue Lake - Fort Irwin - Northern Haliburton County
Algonquin
Burk's Falls - Bayfield Inlet.
Tonight..Mainly cloudy. 30 percent chance of flurries early this
 evening. Clearing overnight. Wind northeast 20 km/h gusting to 40
 becoming light near midnight. Low minus 18. Wind chill minus 17 this
 evening and minus 25 overnight.
Saturday..Mainly sunny. Wind up to 15 km/h. Temperature steady near
 minus 19. Wind chill near minus 28. Risk of frostbite. UV index 1 or
 low.
Saturday night..A few clouds. Wind up to 15 km/h. Low minus 23. Wind
 chill near minus 30. Risk of frostbite.

End
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