302
FPCN11 CWTO 252036 AAA
UPDATED FORECASTS FOR SOUTHERN ONTARIO AND THE NATIONAL CAPITAL
REGION ISSUED BY ENVIRONMENT CANADA AT 4:35 P.M. EDT TUESDAY 25
AUGUST 2026 FOR TONIGHT WEDNESDAY AND WEDNESDAY NIGHT.
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 5:00 A.M. EDT
WEDNESDAY.
SIMCOE - DELHI - NORFOLK.
TONIGHT..A FEW CLOUDS. FOG PATCHES DEVELOPING NEAR MIDNIGHT. LOW 11.
WEDNESDAY..MAINLY SUNNY. WIND BECOMING SOUTHWEST 20 KM/H LATE IN THE
MORNING. HIGH 26. HUMIDEX 30. UV INDEX 7 OR HIGH.
WEDNESDAY NIGHT..INCREASING CLOUDINESS EARLY IN THE EVENING.
40 PERCENT CHANCE OF SHOWERS LATE IN THE EVENING AND OVERNIGHT WITH
RISK OF A THUNDERSTORM. LOW 18.
WOODSTOCK - TILLSONBURG - OXFORD COUNTY.
TONIGHT..A FEW CLOUDS. FOG PATCHES DEVELOPING NEAR MIDNIGHT. LOW 11.
WEDNESDAY..MAINLY SUNNY. WIND BECOMING SOUTH 20 KM/H LATE IN THE
MORNING. HIGH 26. HUMIDEX 31. UV INDEX 7 OR HIGH.
WEDNESDAY NIGHT..INCREASING CLOUDINESS EARLY IN THE EVENING.
40 PERCENT CHANCE OF SHOWERS LATE IN THE EVENING AND OVERNIGHT WITH
RISK OF A THUNDERSTORM. WIND SOUTH 20 KM/H BECOMING WEST 20 LATE IN
THE EVENING. LOW 18.
BRANTFORD - COUNTY OF BRANT.
TONIGHT..CLEARING EARLY THIS EVENING. FOG PATCHES DEVELOPING NEAR
MIDNIGHT. LOW 11.
WEDNESDAY..MAINLY SUNNY. WIND BECOMING SOUTHWEST 30 KM/H LATE IN THE
MORNING. HIGH 26. HUMIDEX 31. UV INDEX 7 OR HIGH.
WEDNESDAY NIGHT..INCREASING CLOUDINESS. 40 PERCENT CHANCE OF SHOWERS
LATE IN THE EVENING AND OVERNIGHT WITH RISK OF A THUNDERSTORM. WIND
SOUTH 20 KM/H BECOMING LIGHT IN THE EVENING. LOW 18.
CALEDON.
TONIGHT..CLEARING THIS EVENING. FOG PATCHES DEVELOPING NEAR MIDNIGHT.
LOW 13.
WEDNESDAY..MAINLY SUNNY. INCREASING CLOUDINESS LATE IN THE MORNING.
WIND BECOMING SOUTH 20 KM/H IN THE MORNING. HIGH 27. HUMIDEX 32. UV
INDEX 7 OR HIGH.
WEDNESDAY NIGHT..INCREASING CLOUDINESS. 40 PERCENT CHANCE OF SHOWERS
LATE IN THE EVENING AND OVERNIGHT WITH RISK OF A THUNDERSTORM. WIND
SOUTH 20 KM/H BECOMING LIGHT IN THE EVENING. LOW 18.
KITCHENER - CAMBRIDGE - REGION OF WATERLOO.
TONIGHT..CLEARING EARLY THIS EVENING. FOG PATCHES DEVELOPING NEAR
MIDNIGHT. LOW 11.
WEDNESDAY..A MIX OF SUN AND CLOUD. WIND BECOMING SOUTH 30 KM/H LATE
IN THE MORNING. HIGH 26. HUMIDEX 30. UV INDEX 7 OR HIGH.
WEDNESDAY NIGHT..INCREASING CLOUDINESS EARLY IN THE EVENING.
40 PERCENT CHANCE OF SHOWERS LATE IN THE EVENING AND OVERNIGHT WITH
RISK OF A THUNDERSTORM. WIND SOUTH 30 KM/H BECOMING LIGHT NEAR
MIDNIGHT. WIND BECOMING SOUTHWEST 20 AFTER MIDNIGHT. LOW 17.
GUELPH - ERIN - SOUTHERN WELLINGTON COUNTY.
TONIGHT..CLEARING THIS EVENING. FOG PATCHES DEVELOPING NEAR MIDNIGHT.
LOW 11.
WEDNESDAY..A MIX OF SUN AND CLOUD. WIND BECOMING SOUTH 20 KM/H IN THE
MORNING. HIGH 26. HUMIDEX 30. UV INDEX 7 OR HIGH.
WEDNESDAY NIGHT..INCREASING CLOUDINESS EARLY IN THE EVENING.
40 PERCENT CHANCE OF SHOWERS LATE IN THE EVENING AND OVERNIGHT WITH
RISK OF A THUNDERSTORM. WIND SOUTH 20 KM/H BECOMING LIGHT IN THE
EVENING. LOW 17.
MOUNT FOREST - ARTHUR - NORTHERN WELLINGTON COUNTY.
TONIGHT..CLEARING EARLY THIS EVENING. FOG PATCHES DEVELOPING NEAR
MIDNIGHT. LOW 11.
WEDNESDAY..INCREASING CLOUDINESS EARLY IN THE MORNING. WIND BECOMING
SOUTH 20 KM/H GUSTING TO 40 IN THE MORNING. HIGH 25. HUMIDEX 30. UV
INDEX 6 OR HIGH.
WEDNESDAY NIGHT..BECOMING CLOUDY IN THE EVENING WITH 40 PERCENT
CHANCE OF SHOWERS LATE IN THE EVENING AND OVERNIGHT. RISK OF A
THUNDERSTORM LATE IN THE EVENING AND OVERNIGHT. WIND SOUTH 20 KM/H
BECOMING LIGHT IN THE EVENING. LOW 17.
ORANGEVILLE - GRAND VALLEY - SOUTHERN DUFFERIN COUNTY.
TONIGHT..CLEARING THIS EVENING. FOG PATCHES DEVELOPING NEAR MIDNIGHT.
LOW 11.
WEDNESDAY..MAINLY SUNNY. INCREASING CLOUDINESS LATE IN THE MORNING.
WIND BECOMING SOUTH 20 KM/H IN THE MORNING. HIGH 26. HUMIDEX 30. UV
INDEX 7 OR HIGH.
WEDNESDAY NIGHT..A FEW CLOUDS. INCREASING CLOUDINESS LATE IN THE
EVENING THEN 40 PERCENT CHANCE OF SHOWERS LATE IN THE EVENING AND
OVERNIGHT. RISK OF A THUNDERSTORM LATE IN THE EVENING AND OVERNIGHT.
WIND SOUTH 20 KM/H BECOMING LIGHT IN THE EVENING. LOW 17.
SHELBURNE - MANSFIELD - NORTHERN DUFFERIN COUNTY.
TONIGHT..CLEARING EARLY THIS EVENING. FOG PATCHES DEVELOPING NEAR
MIDNIGHT. LOW 11.
WEDNESDAY..INCREASING CLOUDINESS. WIND BECOMING SOUTH 20 KM/H IN THE
MORNING. HIGH 26. HUMIDEX 30. UV INDEX 7 OR HIGH.
WEDNESDAY NIGHT..INCREASING CLOUDINESS. 40 PERCENT CHANCE OF SHOWERS
LATE IN THE EVENING AND OVERNIGHT WITH RISK OF A THUNDERSTORM. WIND
SOUTH 20 KM/H BECOMING WEST 20 AFTER MIDNIGHT. LOW 17.
REMAINDER UNCHANGED.
END
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