FPCN11 CWTO 070900
Forecasts for Southern Ontario and the National Capital Region issued
by Environment Canada at 5:00 a.m. EDT Tuesday 7 October 2025 for
today and Wednesday.
The next scheduled forecast will be issued at 11:00 a.m. EDT.

City of Toronto.
Today..Cloudy. 30 percent chance of showers early this morning.
 Showers beginning this morning. Risk of a thunderstorm. Local amount
 10 to 20 mm. Wind becoming southwest 20 km/h this morning. High 21.
 Humidex 27. UV index 2 or low.
Tonight..Clearing late this evening. Low 8.
Wednesday..Sunny. Wind north 20 km/h. High 15. UV index 4 or
 moderate.

Windsor - Essex - Chatham-Kent.
Today..Cloudy. 40 percent chance of showers this morning. A few
 showers beginning this morning and ending this afternoon. Risk of a
 thunderstorm this morning and early this afternoon. Local amount 10
 to 20 mm. Wind becoming north 20 km/h this afternoon. High 20.
 Humidex 26. UV index 2 or low.
Tonight..Cloudy. Clearing before morning. Wind north 20 km/h becoming
 light this evening. Low 6.
Wednesday..Sunny. High 16. UV index 5 or moderate.

Sarnia - Lambton.
Today..Cloudy. 40 percent chance of showers this morning. A few
 showers beginning this morning and ending this afternoon. Risk of a
 thunderstorm this morning and early this afternoon. Wind becoming
 north 20 km/h this afternoon. High 19 with temperature falling to 15
 this afternoon. UV index 2 or low.
Tonight..Partly cloudy. Clearing after midnight. Wind north 20 km/h.
 Low 7.
Wednesday..Sunny. Wind north 20 km/h. High 15. UV index 4 or
 moderate.

Elgin.
Today..Cloudy. 40 percent chance of showers early this morning. A few
 showers beginning this morning and ending this afternoon. Risk of a
 thunderstorm this morning and early this afternoon. Local amount 10
 to 20 mm. Wind southwest 20 km/h becoming northwest 20 late this
 morning. High 20 with temperature falling to 14 this afternoon.
 Humidex 27. UV index 2 or low.
Tonight..Cloudy. Clearing after midnight. Wind northwest 20 km/h
 becoming light this evening. Low 6.
Wednesday..Sunny. Wind becoming north 20 km/h late in the morning.
 High 15. UV index 4 or moderate.

London - Middlesex.
Today..Cloudy. 40 percent chance of showers this morning. A few
 showers beginning this morning and ending this afternoon. Risk of a
 thunderstorm this morning and early this afternoon. Wind becoming
 northwest 20 km/h this afternoon. High 19 with temperature falling
 to 14 this afternoon. UV index 2 or low.
Tonight..Clearing late this evening. Wind north 20 km/h. Low 6.
Wednesday..Sunny. Wind north 20 km/h. High 16. UV index 4 or
 moderate.

Simcoe - Delhi - Norfolk.
Today..Cloudy. 40 percent chance of showers early this morning. A few
 showers beginning this morning and ending this afternoon. Risk of a
 thunderstorm this morning and early this afternoon. Local amount 10
 to 20 mm. Wind west 30 km/h. High 19. UV index 2 or low.
Tonight..Cloudy. Clearing overnight. Wind west 30 km/h becoming light
 this evening. Low plus 5.
Wednesday..Sunny. Wind north 20 km/h. High 16. UV index 4 or
 moderate.

Dunnville - Caledonia - Haldimand.
Today..Cloudy. 40 percent chance of showers this morning. Showers
 beginning this morning. Risk of a thunderstorm. Amount 15 to 25 mm.
 Wind west 30 km/h. High 20. Humidex 27. UV index 2 or low.
Tonight..Cloudy. 40 percent chance of showers early this evening.
 Clearing before morning. Wind becoming northwest 20 km/h before
 morning. Low 6.
Wednesday..Sunny. Wind north 20 km/h. High 15. UV index 4 or
 moderate.

Oxford - Brant.
Today..Cloudy. 40 percent chance of showers early this morning. A few
 showers beginning this morning and ending this afternoon. Risk of a
 thunderstorm this morning and early this afternoon. Wind southwest
 30 km/h. High 22. Humidex 27. UV index 2 or low.
Tonight..Mainly cloudy. Clearing before morning. Low plus 5.
Wednesday..Sunny. Wind north 20 km/h. High 16. UV index 4 or
 moderate.

Niagara Falls - Welland - Southern Niagara Region.
Today..Cloudy. 40 percent chance of showers this morning. Showers
 beginning this morning. Risk of a thunderstorm. Amount 15 to 25 mm.
 Wind southwest 30 km/h. High 23. Humidex 30. UV index 2 or low.
Tonight..Cloudy. 40 percent chance of showers early this evening.
 Clearing after midnight. Wind west 20 km/h becoming light this
 evening. Low 10.
Wednesday..Sunny. Wind north 20 km/h. High 14. UV index 4 or
 moderate.

St. Catharines - Grimsby - Northern Niagara Region.
Today..Cloudy. 40 percent chance of showers this morning. Showers
 beginning this morning. Risk of a thunderstorm. Amount 15 to 25 mm.
 Wind southwest 20 km/h. High 23 with temperature falling to 15 this
 afternoon. Humidex 29. UV index 2 or low.
Tonight..Cloudy. 40 percent chance of showers early this evening.
 Clearing after midnight. Wind northwest 20 km/h. Low 9.
Wednesday..Sunny. Wind north 20 km/h. High 14. UV index 4 or
 moderate.

City of Hamilton.
Today..Cloudy. 40 percent chance of showers early this morning. A few
 showers beginning this morning and ending this afternoon. Risk of a
 thunderstorm this morning and early this afternoon. Local amount 10
 to 20 mm. Wind southwest 20 km/h. High 21. Humidex 27. UV index 2 or
 low.
Tonight..Cloudy. Becoming partly cloudy this evening. Wind southwest
 20 km/h becoming light this evening. Low 6.
Wednesday..Sunny. Wind becoming north 20 km/h in the morning.
 High 15. UV index 4 or moderate.

Halton - Peel.
Today..Cloudy. 30 percent chance of showers early this morning.
 Showers beginning this morning. Risk of a thunderstorm. Local amount
 10 to 20 mm. Wind west 20 km/h. High 21. Humidex 26. UV index 2 or
 low.
Tonight..Clearing after midnight. Wind west 20 km/h becoming light
 this evening. Low 7.
Wednesday..Sunny. Wind becoming north 20 km/h in the morning.
 High 15. UV index 4 or moderate.

York - Durham.
Today..Cloudy. 30 percent chance of showers early this morning.
 Showers beginning this morning. Risk of a thunderstorm. Local amount
 10 to 20 mm. Wind becoming west 20 km/h this morning. High 20 with
 temperature falling to 15 this afternoon. Humidex 25. UV index 2 or
 low.
Tonight..Clearing late this evening. Low 6.
Wednesday..Sunny. Wind becoming northwest 20 km/h late in the
 afternoon. High 15. UV index 4 or moderate.

Goderich - Bluewater - Southern Huron County
Stratford - Mitchell - Southern Perth County.
Today..A few showers ending this afternoon then cloudy. Risk of a
 thunderstorm this morning and early this afternoon. Local amount 10
 to 15 mm. Wind becoming northwest 20 km/h this afternoon.
 Temperature steady near 16. UV index 2 or low.
Tonight..Clearing late this evening. Wind becoming north 20 km/h late
 this evening. Low plus 4.
Wednesday..Sunny. Wind north 20 km/h. High 14. UV index 4 or
 moderate.

Wingham - Blyth - Northern Huron County
Listowel - Milverton - Northern Perth County.
Today..A few showers ending this afternoon then cloudy. Risk of a
 thunderstorm this morning and early this afternoon. Local amount 10
 to 15 mm. Wind becoming northwest 20 km/h this afternoon.
 Temperature steady near 16. UV index 2 or low.
Tonight..Clearing late this evening. Wind becoming north 20 km/h late
 this evening. Low plus 4.
Wednesday..Sunny. Wind north 20 km/h. High 14. UV index 4 or
 moderate.

Kitchener - Cambridge - Region of Waterloo
Guelph - Erin - Southern Wellington County.
Today..Cloudy. 40 percent chance of showers early this morning. A few
 showers beginning this morning and ending this afternoon. Risk of a
 thunderstorm this morning and early this afternoon. High 20 with
 temperature falling to 13 this afternoon. Humidex 25. UV index 2 or
 low.
Tonight..Clearing late this evening. Low plus 5.
Wednesday..Sunny. Wind becoming north 20 km/h late in the morning.
 High 15. UV index 4 or moderate.

Mount Forest - Arthur - Northern Wellington County.
Today..A few showers ending this afternoon then cloudy. Risk of a
 thunderstorm this morning and early this afternoon. Local amount 10
 to 15 mm. Temperature falling to 12 this afternoon. UV index 2 or
 low.
Tonight..Clearing this evening. Low plus 4.
Wednesday..Sunny. Wind becoming north 20 km/h late in the morning.
 High 13. UV index 4 or moderate.

Dufferin - Innisfil.
Today..A few showers ending this afternoon then cloudy. Risk of a
 thunderstorm this morning and early this afternoon. Local amount 10
 to 15 mm. High 18. UV index 2 or low.
Tonight..Clearing late this evening. Low plus 5.
Wednesday..Sunny. Wind becoming northwest 20 km/h in the morning.
 High 13. UV index 4 or moderate.

Saugeen Shores - Kincardine - Southern Bruce County.
Today..Showers ending near noon then a mix of sun and cloud. Risk of
 a thunderstorm this morning. Local amount 10 to 20 mm. Wind north
 20 km/h becoming light this afternoon. High 17. UV index 3 or
 moderate.
Tonight..Clearing this evening. Wind becoming northwest 30 km/h this
 evening. Low 7.
Wednesday..Sunny. Wind north 20 km/h. High 13. UV index 4 or
 moderate.

Bruce Peninsula - Sauble Beach - Tobermory.
Today..A few showers ending this morning then clearing. Risk of
 thunderstorms early this morning. Local amount 10 to 15 mm. Wind
 becoming northwest 30 km/h late this morning. High 16. UV index 3 or
 moderate.
Tonight..Clear. Wind northwest 30 km/h. Low plus 4.
Wednesday..Sunny. Wind becoming north 20 km/h late in the morning.
 High 11. UV index 4 or moderate.

Hanover - Dundalk - Southern Grey County
Owen Sound - Blue Mountains - Northern Grey County.
Today..Showers ending near noon then a mix of sun and cloud. Risk of
 a thunderstorm this morning. Local amount 10 to 20 mm. Wind becoming
 northwest 20 km/h late this afternoon. High 16. UV index 3 or
 moderate.
Tonight..Clearing this evening. Wind northwest 20 km/h. Low plus 5.
Wednesday..Sunny. Wind north 20 km/h. High 12. UV index 4 or
 moderate.

Barrie - Collingwood - Hillsdale.
Today..Showers ending near noon then cloudy. Risk of a thunderstorm
 this morning. Local amount 10 to 20 mm. Wind becoming northwest
 20 km/h late this morning. High 17. UV index 2 or low.
Tonight..Clearing this evening. Wind northwest 20 km/h. Low plus 3.
Wednesday..Sunny. Wind northwest 20 km/h. High 13. UV index 4 or
 moderate.

Midland - Coldwater - Orr Lake
Orillia - Lagoon City - Washago.
Today..Showers ending near noon then cloudy. Risk of a thunderstorm
 this morning. Local amount 10 to 20 mm. Wind becoming northwest
 20 km/h late this morning. Temperature steady near 16. UV index 2 or
 low.
Tonight..Clearing late this evening. Wind northwest 20 km/h. Low
 plus 5.
Wednesday..Sunny. Wind northwest 20 km/h. High 14. UV index 4 or
 moderate.

Belleville - Quinte - Northumberland.
Today..Increasing cloudiness. 40 percent chance of showers late this
 morning. Showers beginning near noon. Risk of a thunderstorm late
 this morning and this afternoon. Amount 10 to 15 mm. Wind becoming
 southwest 30 km/h late this morning. High 22 with temperature
 falling to 17 this afternoon. Humidex 27. UV index 3 or moderate.
Tonight..Showers ending this evening then clearing. Risk of a
 thunderstorm early this evening. Low 7.
Wednesday..Sunny. High 16. UV index 4 or moderate.

Picton - Sandbanks Park
Napanee - Consecon.
Today..Increasing cloudiness. 40 percent chance of showers late this
 morning. Showers beginning near noon. Risk of a thunderstorm late
 this morning and this afternoon. Amount 10 to 15 mm. Wind becoming
 southwest 30 km/h late this morning. High 22 with temperature
 falling to 17 this afternoon. Humidex 27. UV index 3 or moderate.
Tonight..Showers ending this evening then clearing. Risk of a
 thunderstorm early this evening. Low 7.
Wednesday..Sunny. High 16. UV index 4 or moderate.

Kingston - Odessa - Frontenac Islands.
Today..Becoming cloudy this morning with 40 percent chance of showers
 late this morning. Showers beginning near noon. Risk of a
 thunderstorm late this morning and this afternoon. Amount 10 to
 15 mm. Wind becoming southwest 20 km/h this morning. High 22 with
 temperature falling to 17 this afternoon. Humidex 27. UV index 2 or
 low.
Tonight..Showers ending this evening then partly cloudy. Risk of a
 thunderstorm early this evening. Low 9.
Wednesday..Sunny. High 15. UV index 4 or moderate.

Lindsay - Southern Kawartha Lakes
Fenelon Falls - Balsam Lake Park - Northern Kawartha Lakes.
Today..Cloudy. 30 percent chance of showers this morning. Showers
 beginning this morning and ending this afternoon. Risk of a
 thunderstorm. Wind becoming west 20 km/h this morning. Temperature
 falling to 14 this afternoon. UV index 2 or low.
Tonight..Clearing late this evening. Low plus 5.
Wednesday..Sunny. High 13. UV index 4 or moderate.

Peterborough City - Lakefield - Southern Peterborough County
Apsley - Woodview - Northern Peterborough County.
Today..Increasing cloudiness. 30 percent chance of showers this
 morning. Showers beginning this morning and ending this afternoon.
 Risk of a thunderstorm. Wind becoming west 20 km/h late this
 morning. High 20. Humidex 25. UV index 2 or low.
Tonight..Clearing late this evening. Wind west 20 km/h becoming light
 this evening. Low plus 4.
Wednesday..Sunny. High 15. UV index 4 or moderate.

Stirling - Tweed - South Frontenac.
Today..Increasing cloudiness. 40 percent chance of showers late this
 morning. A few showers beginning near noon. Risk of a thunderstorm
 late this morning and this afternoon. Amount 10 to 15 mm. Wind
 becoming southwest 20 km/h this morning. High 23 with temperature
 falling to 17 this afternoon. Humidex 28. UV index 3 or moderate.
Tonight..A few showers ending this evening then clearing. Low 6.
Wednesday..Sunny. High 14. UV index 4 or moderate.

Bancroft - Bon Echo Park.
Today..Increasing cloudiness. A few showers beginning early this
 morning and ending this afternoon. Risk of a thunderstorm this
 morning and early this afternoon. Wind becoming southwest 20 km/h
 this morning. High 19. UV index 2 or low.
Tonight..Cloudy. Clearing near midnight. Low plus 3.
Wednesday..Sunny. High 14. UV index 4 or moderate.

Brockville - Leeds and Grenville.
Today..Becoming cloudy this morning with a few showers. Risk of a
 thunderstorm this afternoon. Amount 10 to 20 mm. Wind becoming
 southwest 20 km/h this morning. High 23 with temperature falling
 to 17 this afternoon. Humidex 27. UV index 2 or low.
Tonight..A few showers ending late this evening then partly cloudy.
 Risk of a thunderstorm early this evening. Low 7.
Wednesday..Sunny. High 14. UV index 4 or moderate.

City of Ottawa.
Today..Increasing cloudiness. A few showers beginning this morning
 and ending this afternoon then 40 percent chance of showers late
 this afternoon. Risk of a thunderstorm late this morning and this
 afternoon. Amount 10 to 20 mm. Wind becoming southwest 20 km/h near
 noon. High 22 with temperature falling to 16 this afternoon. Humidex
 27. UV index 2 or low.
Tonight..Cloudy. 40 percent chance of showers early this evening.
 Clearing after midnight. Low 6.
Wednesday..Sunny. Wind becoming northwest 20 km/h in the afternoon.
 High 13. UV index 4 or moderate.

Gatineau.
Today..Increasing cloudiness. A few showers beginning this morning
 and ending this afternoon then 40 percent chance of showers late
 this afternoon. Risk of a thunderstorm late this morning and this
 afternoon. Amount 10 to 20 mm. Wind becoming southwest 20 km/h this
 morning. High 23 with temperature falling to 16 this afternoon.
 Humidex 26. UV index 2 or low.
Tonight..Cloudy. 40 percent chance of showers early this evening.
 Clearing after midnight. Wind southwest 20 km/h becoming light this
 evening. Low 6.
Wednesday..Sunny. Wind becoming northwest 20 km/h in the afternoon.
 High 15. UV index 4 or moderate.

Prescott and Russell.
Today..Increasing cloudiness. A few showers beginning this morning
 and ending this afternoon then 40 percent chance of showers late
 this afternoon. Risk of a thunderstorm late this morning and this
 afternoon. Amount 10 to 20 mm. Wind becoming southwest 20 km/h this
 morning. High 23 with temperature falling to 16 this afternoon.
 Humidex 27. UV index 2 or low.
Tonight..Cloudy. 40 percent chance of showers early this evening.
 Clearing after midnight. Low 6.
Wednesday..Sunny. Wind becoming northwest 20 km/h late in the
 morning. High 13. UV index 4 or moderate.

Cornwall - Morrisburg.
Today..Increasing cloudiness. A few showers beginning late this
 morning. Risk of a thunderstorm this afternoon. Amount 10 to 20 mm.
 Wind becoming southwest 20 km/h this morning. High 24 with
 temperature falling to 17 this afternoon. Humidex 27. UV index 3 or
 moderate.
Tonight..A few showers ending late this evening then partly cloudy.
 Risk of a thunderstorm early this evening. Low 6.
Wednesday..Clearing in the morning. High 14. UV index 4 or moderate.

Smiths Falls - Lanark - Sharbot Lake.
Today..Increasing cloudiness. A few showers beginning this morning
 and ending this afternoon then 40 percent chance of showers late
 this afternoon. Risk of a thunderstorm late this morning and this
 afternoon. Amount 10 to 20 mm. Wind becoming southwest 20 km/h late
 this morning. High 21 with temperature falling to 16 this afternoon.
 Humidex 25. UV index 2 or low.
Tonight..Cloudy. 40 percent chance of showers early this evening.
 Clearing near midnight. Low plus 5.
Wednesday..Sunny. High 13. UV index 4 or moderate.

Port Carling - Port Severn
Bracebridge - Gravenhurst.
Today..A few showers ending this morning then cloudy with 60 percent
 chance of showers. Risk of a thunderstorm early this morning.
 High 18. UV index 2 or low.
Tonight..Clearing this evening. Wind northwest 20 km/h becoming light
 after midnight. Low plus 4.
Wednesday..Sunny. High 13. UV index 4 or moderate.

Town of Parry Sound - Rosseau - Killbear Park
Huntsville - Baysville.
Today..A few showers ending this morning then cloudy with 30 percent
 chance of showers. Clearing this afternoon. Risk of a thunderstorm
 early this morning. High 17. UV index 2 or low.
Tonight..Clear. Wind northwest 20 km/h becoming light after midnight.
 Low plus 3.
Wednesday..Sunny. High 13. UV index 4 or moderate.

Haliburton.
Today..Cloudy. A few showers beginning early this morning and ending
 this afternoon. Risk of a thunderstorm this morning and early this
 afternoon. High 16. UV index 2 or low.
Tonight..Clearing this evening. Low plus 3.
Wednesday..Sunny. High 12. UV index 4 or moderate.

Renfrew - Pembroke - Barry's Bay.
Today..Cloudy. A few showers beginning early this morning and ending
 this afternoon. Risk of a thunderstorm this morning and early this
 afternoon. High 19. UV index 2 or low.
Tonight..Partly cloudy. Clearing late this evening. Low plus 3.
Wednesday..Sunny. High 12. UV index 4 or moderate.

Algonquin.
Today..A few showers ending this morning then cloudy with 30 percent
 chance of showers. Clearing this afternoon. Risk of a thunderstorm
 early this morning. High 16. UV index 2 or low.
Tonight..Partly cloudy. Becoming clear this evening. Low plus 3.
Wednesday..Sunny. High 11. UV index 4 or moderate.

Burk's Falls - Bayfield Inlet.
Today..A few showers ending this morning then clearing. Risk of a
 thunderstorm early this morning. High 17. UV index 2 or low.
Tonight..Clear. Low plus 3.
Wednesday..Sunny. High 12. UV index 4 or moderate.

End
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--- up 1 day, 12 hours, 46 minutes
 * Origin: Northern Realms (618:400/23)