410
FPCN11 CWTO 111146 AAB
UPDATED FORECASTS FOR SOUTHERN ONTARIO AND THE NATIONAL CAPITAL
REGION ISSUED BY ENVIRONMENT CANADA AT 7:45 A.M. EDT TUESDAY 11
AUGUST 2026 FOR TODAY AND WEDNESDAY.
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 11:00 A.M. EDT.
WINDSOR - LEAMINGTON - ESSEX COUNTY.
TODAY..MAINLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS CHANGING TO
70 PERCENT CHANCE OF SHOWERS THIS AFTERNOON. RISK OF A THUNDERSTORM.
FOG PATCHES DISSIPATING THIS MORNING. HIGH 28. HUMIDEX 34. UV
INDEX 8 OR VERY HIGH.
TONIGHT..MAINLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS THIS EVENING
WITH RISK OF A THUNDERSTORM. LOW 17.
WEDNESDAY..MAINLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS IN THE
AFTERNOON WITH RISK OF A THUNDERSTORM. WIND BECOMING SOUTH 30 KM/H
IN THE AFTERNOON. HIGH 29. HUMIDEX 38. UV INDEX 7 OR HIGH.
CHATHAM-KENT - RONDEAU PARK.
TODAY..A MIX OF SUN AND CLOUD WITH 30 PERCENT CHANCE OF SHOWERS THIS
MORNING AND 70 PERCENT CHANCE OF SHOWERS LATE THIS AFTERNOON. RISK
OF A THUNDERSTORM LATE THIS AFTERNOON. FOG PATCHES DISSIPATING THIS
MORNING. HIGH 28. HUMIDEX 34. UV INDEX 8 OR VERY HIGH.
TONIGHT..MAINLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS THIS EVENING
WITH RISK OF A THUNDERSTORM. LOW 16.
WEDNESDAY..MAINLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS IN THE
AFTERNOON WITH RISK OF A THUNDERSTORM. WIND BECOMING SOUTHWEST
30 KM/H IN THE AFTERNOON. HIGH 28. HUMIDEX 36. UV INDEX 7 OR HIGH.
SARNIA - PETROLIA - WESTERN LAMBTON COUNTY.
TODAY..A MIX OF SUN AND CLOUD WITH 40 PERCENT CHANCE OF SHOWERS. RISK
OF A THUNDERSTORM LATE THIS AFTERNOON. FOG PATCHES DISSIPATING THIS
MORNING. HIGH 27. HUMIDEX 33. UV INDEX 8 OR VERY HIGH.
TONIGHT..PARTLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS THIS EVENING
WITH RISK OF A THUNDERSTORM. LOW 16.
WEDNESDAY..A MIX OF SUN AND CLOUD. 40 PERCENT CHANCE OF SHOWERS IN
THE AFTERNOON WITH RISK OF A THUNDERSTORM. WIND BECOMING SOUTH
30 KM/H IN THE AFTERNOON. HIGH 29. HUMIDEX 37. UV INDEX 8 OR VERY
HIGH.
WATFORD - PINERY PARK - EASTERN LAMBTON COUNTY.
TODAY..A MIX OF SUN AND CLOUD WITH 40 PERCENT CHANCE OF SHOWERS. RISK
OF A THUNDERSTORM LATE THIS AFTERNOON. FOG PATCHES DISSIPATING THIS
MORNING. HIGH 27. HUMIDEX 33. UV INDEX 8 OR VERY HIGH.
TONIGHT..PARTLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS THIS EVENING
WITH RISK OF A THUNDERSTORM. LOW 15.
WEDNESDAY..A MIX OF SUN AND CLOUD. 40 PERCENT CHANCE OF SHOWERS IN
THE AFTERNOON WITH RISK OF A THUNDERSTORM. WIND BECOMING SOUTHWEST
20 KM/H GUSTING TO 40 LATE IN THE MORNING. HIGH 29. HUMIDEX 37. UV
INDEX 8 OR VERY HIGH.
REMAINDER UNCHANGED.
END
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