725
FPCN11 CWTO 032054 AAA
UPDATED FORECASTS FOR SOUTHERN ONTARIO AND THE NATIONAL CAPITAL
REGION ISSUED BY ENVIRONMENT CANADA AT 4:53 P.M. EDT THURSDAY 3
SEPTEMBER 2026 FOR TONIGHT FRIDAY AND FRIDAY NIGHT.
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 5:00 A.M. EDT FRIDAY.
WINDSOR - LEAMINGTON - ESSEX COUNTY.
TONIGHT..SHOWERS WITH A FEW THUNDERSTORMS ENDING THIS EVENING THEN
MAINLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS. RISK OF A
THUNDERSTORM THIS EVENING AND OVERNIGHT. LOCAL AMOUNT 15 TO 25 MM.
FOG PATCHES DEVELOPING AFTER MIDNIGHT. LOW 20.
FRIDAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS AND RISK OF A
THUNDERSTORM. FOG PATCHES DISSIPATING IN THE MORNING. HIGH 27.
HUMIDEX 35. UV INDEX 5 OR MODERATE.
FRIDAY NIGHT..CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS AND RISK OF A
THUNDERSTORM. LOW 18.
CHATHAM-KENT - RONDEAU PARK.
TONIGHT..SHOWERS WITH A FEW THUNDERSTORMS ENDING THIS EVENING THEN
MAINLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS. RISK OF A
THUNDERSTORM THIS EVENING AND OVERNIGHT. LOCAL AMOUNT 15 TO 25 MM.
FOG PATCHES DEVELOPING AFTER MIDNIGHT. LOW 19.
FRIDAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS AND RISK OF A
THUNDERSTORM. FOG PATCHES DISSIPATING IN THE MORNING. HIGH 26.
HUMIDEX 35. UV INDEX 5 OR MODERATE.
FRIDAY NIGHT..MAINLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS AND
RISK OF A THUNDERSTORM. LOW 17.
SARNIA - PETROLIA - WESTERN LAMBTON COUNTY.
TONIGHT..SHOWERS WITH A FEW THUNDERSTORMS ENDING THIS EVENING THEN
MAINLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS. RISK OF A
THUNDERSTORM THIS EVENING AND OVERNIGHT. LOCAL AMOUNT 15 TO 25 MM.
FOG PATCHES DEVELOPING AFTER MIDNIGHT. LOW 18.
FRIDAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS AND RISK OF A
THUNDERSTORM. FOG PATCHES DISSIPATING IN THE MORNING. HIGH 26.
HUMIDEX 34. UV INDEX 5 OR MODERATE.
FRIDAY NIGHT..MAINLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS AND
RISK OF A THUNDERSTORM. LOW 17.
WATFORD - PINERY PARK - EASTERN LAMBTON COUNTY.
TONIGHT..SHOWERS WITH A FEW THUNDERSTORMS ENDING THIS EVENING THEN
PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS. LOCAL AMOUNT 15 TO
25 MM. FOG PATCHES DEVELOPING AFTER MIDNIGHT. WIND SOUTHWEST 20 KM/H
GUSTING TO 40 BECOMING LIGHT THIS EVENING. LOW 18.
FRIDAY..MAINLY CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS AND RISK OF A
THUNDERSTORM. FOG PATCHES DISSIPATING IN THE MORNING. HIGH 26.
HUMIDEX 34. UV INDEX 5 OR MODERATE.
FRIDAY NIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS IN THE
EVENING. CLEARING BEFORE MORNING. LOW 16.
RODNEY - SHEDDEN - WESTERN ELGIN COUNTY.
TONIGHT..SHOWERS WITH A FEW THUNDERSTORMS ENDING THIS EVENING THEN
MAINLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS. LOCAL AMOUNT 15 TO
25 MM. FOG PATCHES DEVELOPING AFTER MIDNIGHT. WIND SOUTHWEST 20 KM/H
GUSTING TO 40 BECOMING LIGHT THIS EVENING. LOW 18.
FRIDAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS AND RISK OF A
THUNDERSTORM. FOG PATCHES DISSIPATING IN THE MORNING. HIGH 26.
HUMIDEX 35. UV INDEX 5 OR MODERATE.
FRIDAY NIGHT..MAINLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS IN THE
EVENING. LOW 16.
ST. THOMAS - AYLMER - EASTERN ELGIN COUNTY.
TONIGHT..SHOWERS WITH A FEW THUNDERSTORMS ENDING THIS EVENING THEN
MAINLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS. LOCAL AMOUNT 15 TO
25 MM. FOG PATCHES DEVELOPING AFTER MIDNIGHT. WIND SOUTHWEST 20 KM/H
GUSTING TO 40 BECOMING LIGHT THIS EVENING. LOW 18.
FRIDAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS AND RISK OF A
THUNDERSTORM. FOG PATCHES DISSIPATING IN THE MORNING. HIGH 26.
HUMIDEX 35. UV INDEX 5 OR MODERATE.
FRIDAY NIGHT..MAINLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS IN THE
EVENING. LOW 16.
STRATHROY - KOMOKA - WESTERN MIDDLESEX COUNTY.
TONIGHT..SHOWERS WITH A FEW THUNDERSTORMS ENDING THIS EVENING THEN
CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS. LOCAL AMOUNT 15 TO 25 MM.
FOG PATCHES DEVELOPING AFTER MIDNIGHT. WIND SOUTHWEST 20 KM/H
GUSTING TO 40 BECOMING LIGHT THIS EVENING. LOW 18.
FRIDAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS AND RISK OF A
THUNDERSTORM. FOG PATCHES DISSIPATING IN THE MORNING. HIGH 26.
HUMIDEX 34. UV INDEX 5 OR MODERATE.
FRIDAY NIGHT..CLOUDY. 30 PERCENT CHANCE OF SHOWERS IN THE EVENING.
LOW 16.
LONDON - PARKHILL - EASTERN MIDDLESEX COUNTY.
TONIGHT..SHOWERS WITH A FEW THUNDERSTORMS ENDING THIS EVENING THEN
MAINLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS. LOCAL AMOUNT 15 TO
25 MM. FOG PATCHES DEVELOPING AFTER MIDNIGHT. WIND SOUTHWEST 20 KM/H
GUSTING TO 40 BECOMING LIGHT THIS EVENING. LOW 18.
FRIDAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS AND RISK OF A
THUNDERSTORM. FOG PATCHES DISSIPATING IN THE MORNING. HIGH 26.
HUMIDEX 34. UV INDEX 5 OR MODERATE.
FRIDAY NIGHT..PARTLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS IN THE
EVENING. LOW 15.
SIMCOE - DELHI - NORFOLK.
TONIGHT..MAINLY CLOUDY. SHOWERS BEGINNING EARLY THIS EVENING AND
ENDING LATE THIS EVENING THEN 30 PERCENT CHANCE OF SHOWERS LATE THIS
EVENING AND AFTER MIDNIGHT. RISK OF A THUNDERSTORM THIS EVENING.
LOCAL AMOUNT 10 TO 20 MM. LOW 17.
FRIDAY..MAINLY CLOUDY. 60 PERCENT CHANCE OF SHOWERS LATE IN THE
MORNING AND IN THE AFTERNOON. RISK OF A THUNDERSTORM IN THE
AFTERNOON. HIGH 25. HUMIDEX 33. UV INDEX 5 OR MODERATE.
FRIDAY NIGHT..PARTLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS IN THE
EVENING. LOW 13.
DUNNVILLE - CALEDONIA - HALDIMAND.
TONIGHT..MAINLY CLOUDY. SHOWERS BEGINNING EARLY THIS EVENING AND
ENDING LATE THIS EVENING THEN 30 PERCENT CHANCE OF SHOWERS LATE THIS
EVENING AND AFTER MIDNIGHT. RISK OF A THUNDERSTORM THIS EVENING.
LOCAL AMOUNT 10 TO 20 MM. LOW 17.
FRIDAY..BECOMING CLOUDY IN THE MORNING WITH 60 PERCENT CHANCE OF
SHOWERS LATE IN THE MORNING AND IN THE AFTERNOON. RISK OF A
THUNDERSTORM IN THE AFTERNOON. HIGH 26. HUMIDEX 33. UV INDEX 5 OR
MODERATE.
FRIDAY NIGHT..PARTLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS IN THE
EVENING. LOW 15.
WOODSTOCK - TILLSONBURG - OXFORD COUNTY.
TONIGHT..SHOWERS ENDING THIS EVENING THEN PARTLY CLOUDY WITH
30 PERCENT CHANCE OF SHOWERS. RISK OF A THUNDERSTORM EARLY THIS
EVENING. LOCAL AMOUNT 10 TO 20 MM. LOW 17.
FRIDAY..CLOUDY. 60 PERCENT CHANCE OF SHOWERS LATE IN THE MORNING AND
IN THE AFTERNOON. RISK OF A THUNDERSTORM IN THE AFTERNOON. HIGH 26.
HUMIDEX 34. UV INDEX 5 OR MODERATE.
FRIDAY NIGHT..PARTLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS IN THE
EVENING. LOW 14.
BRANTFORD - COUNTY OF BRANT.
TONIGHT..SHOWERS ENDING THIS EVENING THEN MAINLY CLOUDY WITH
30 PERCENT CHANCE OF SHOWERS. RISK OF A THUNDERSTORM EARLY THIS
EVENING. LOCAL AMOUNT 10 TO 20 MM. LOW 17.
FRIDAY..MAINLY CLOUDY. 60 PERCENT CHANCE OF SHOWERS LATE IN THE
MORNING AND IN THE AFTERNOON. RISK OF A THUNDERSTORM IN THE
AFTERNOON. HIGH 26. HUMIDEX 34. UV INDEX 5 OR MODERATE.
FRIDAY NIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS IN THE
EVENING. CLEARING OVERNIGHT. LOW 13.
BURLINGTON - OAKVILLE.
TONIGHT..MAINLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS EARLY THIS
EVENING. WIND NORTH 20 KM/H GUSTING TO 40 BECOMING LIGHT THIS
EVENING. LOW 18.
FRIDAY..MAINLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS LATE IN THE
MORNING AND IN THE AFTERNOON. HIGH 26. HUMIDEX 31. UV INDEX 6 OR
HIGH.
FRIDAY NIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS IN THE
EVENING. CLEARING OVERNIGHT. LOW 16.
HALTON HILLS - MILTON.
TONIGHT..MAINLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS EARLY THIS
EVENING. WIND NORTH 20 KM/H GUSTING TO 40 BECOMING LIGHT THIS
EVENING. LOW 17.
FRIDAY..MAINLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS LATE IN THE
MORNING AND IN THE AFTERNOON. HIGH 26. HUMIDEX 31. UV INDEX 6 OR
HIGH.
FRIDAY NIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS IN THE
EVENING. BECOMING CLEAR OVERNIGHT. LOW 15.
MISSISSAUGA - BRAMPTON.
TONIGHT..MAINLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS EARLY THIS
EVENING. WIND NORTH 20 KM/H GUSTING TO 40 BECOMING LIGHT THIS
EVENING. LOW 18.
FRIDAY..A MIX OF SUN AND CLOUD. 40 PERCENT CHANCE OF SHOWERS LATE IN
THE MORNING AND IN THE AFTERNOON. HIGH 26. HUMIDEX 31. UV INDEX 7 OR
HIGH.
FRIDAY NIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS IN THE
EVENING. BECOMING CLEAR OVERNIGHT. LOW 16.
KITCHENER - CAMBRIDGE - REGION OF WATERLOO.
TONIGHT..MAINLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS EARLY THIS
EVENING. WIND NORTH 20 KM/H GUSTING TO 40 BECOMING LIGHT THIS
EVENING. LOW 16.
FRIDAY..MAINLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS LATE IN THE
MORNING AND IN THE AFTERNOON. HIGH 25. HUMIDEX 30. UV INDEX 5 OR
MODERATE.
FRIDAY NIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS IN THE
EVENING. BECOMING CLEAR OVERNIGHT. LOW 13.
GUELPH - ERIN - SOUTHERN WELLINGTON COUNTY.
TONIGHT..MAINLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS EARLY THIS
EVENING. WIND NORTH 20 KM/H GUSTING TO 40 BECOMING LIGHT THIS
EVENING. LOW 16.
FRIDAY..MAINLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS LATE IN THE
MORNING AND IN THE AFTERNOON. HIGH 25. HUMIDEX 30. UV INDEX 6 OR
HIGH.
FRIDAY NIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS IN THE
EVENING. BECOMING CLEAR OVERNIGHT. LOW 13.
REMAINDER UNCHANGED.
END
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