479
FPCN11 CWTO 170139 AAB
UPDATED FORECASTS FOR SOUTHERN ONTARIO AND THE NATIONAL CAPITAL
REGION ISSUED BY ENVIRONMENT CANADA AT 9:38 P.M. EDT TUESDAY 16 JUNE
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 SHOWERS ENDING OVERNIGHT THEN MAINLY CLOUDY WITH
30 PERCENT CHANCE OF SHOWERS. RISK OF A THUNDERSTORM LATE THIS
EVENING AND OVERNIGHT. LOW 14.
WEDNESDAY..CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS IN THE MORNING
AND EARLY IN THE AFTERNOON THEN A MIX OF SUN AND CLOUD. WIND
BECOMING SOUTH 20 KM/H GUSTING TO 40 IN THE MORNING. HIGH 22. UV
INDEX 7 OR HIGH.
WEDNESDAY NIGHT..BECOMING CLOUDY IN THE EVENING WITH SHOWERS. RISK OF
A THUNDERSTORM OVERNIGHT. WIND SOUTHWEST 20 KM/H BECOMING LIGHT IN
THE EVENING. WIND BECOMING SOUTHWEST 50 GUSTING TO 80 AFTER
MIDNIGHT. LOW 16.
DUNNVILLE - CALEDONIA - HALDIMAND.
TONIGHT..A FEW SHOWERS ENDING OVERNIGHT THEN PARTLY CLOUDY WITH
30 PERCENT CHANCE OF SHOWERS. RISK OF A THUNDERSTORM LATE THIS
EVENING AND OVERNIGHT. LOW 15.
WEDNESDAY..MAINLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS IN THE
MORNING AND EARLY IN THE AFTERNOON. CLEARING LATE IN THE AFTERNOON.
WIND BECOMING SOUTHWEST 20 KM/H GUSTING TO 40 IN THE MORNING.
HIGH 21. UV INDEX 8 OR VERY HIGH.
WEDNESDAY NIGHT..BECOMING CLOUDY IN THE EVENING WITH SHOWERS. RISK OF
A THUNDERSTORM OVERNIGHT. WIND SOUTHWEST 20 KM/H BECOMING LIGHT IN
THE EVENING. WIND BECOMING SOUTH 50 GUSTING TO 70 AFTER MIDNIGHT.
LOW 15.
BRANTFORD - COUNTY OF BRANT.
TONIGHT..A FEW SHOWERS ENDING BEFORE MORNING THEN MAINLY CLOUDY WITH
30 PERCENT CHANCE OF SHOWERS. RISK OF A THUNDERSTORM LATE THIS
EVENING AND OVERNIGHT. WIND NORTHEAST 20 KM/H BECOMING LIGHT LATE
THIS EVENING. LOW 14.
WEDNESDAY..CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS IN THE MORNING
AND EARLY IN THE AFTERNOON THEN A MIX OF SUN AND CLOUD. WIND
BECOMING SOUTHWEST 30 KM/H IN THE MORNING. HIGH 21. UV INDEX 7 OR
HIGH.
WEDNESDAY NIGHT..BECOMING CLOUDY IN THE EVENING WITH SHOWERS. RISK OF
A THUNDERSTORM OVERNIGHT. WIND SOUTHWEST 20 KM/H BECOMING EAST 20
LATE IN THE EVENING THEN SOUTH 30 GUSTING TO 50 AFTER MIDNIGHT.
LOW 15.
NIAGARA FALLS - WELLAND - SOUTHERN NIAGARA REGION.
TONIGHT..PARTLY CLOUDY. A FEW SHOWERS BEGINNING LATE THIS EVENING.
RISK OF A THUNDERSTORM. LOW 15.
WEDNESDAY..MAINLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS IN THE
MORNING AND EARLY IN THE AFTERNOON. CLEARING LATE IN THE AFTERNOON.
WIND BECOMING SOUTHWEST 30 KM/H GUSTING TO 50 IN THE MORNING.
HIGH 22. HUMIDEX 25. UV INDEX 7 OR HIGH.
WEDNESDAY NIGHT..INCREASING CLOUDINESS. SHOWERS BEGINNING LATE IN THE
EVENING. RISK OF A THUNDERSTORM OVERNIGHT. WIND SOUTH 20 KM/H
BECOMING LIGHT IN THE EVENING. WIND BECOMING SOUTHWEST 40 GUSTING TO
70 AFTER MIDNIGHT. LOW 16.
ST. CATHARINES - GRIMSBY - NORTHERN NIAGARA REGION.
TONIGHT..PARTLY CLOUDY. A FEW SHOWERS BEGINNING LATE THIS EVENING.
RISK OF A THUNDERSTORM. LOW 15.
WEDNESDAY..MAINLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS IN THE
MORNING AND EARLY IN THE AFTERNOON. CLEARING LATE IN THE AFTERNOON.
WIND BECOMING SOUTHWEST 30 KM/H GUSTING TO 50 IN THE MORNING.
HIGH 24. HUMIDEX 26. UV INDEX 7 OR HIGH.
WEDNESDAY NIGHT..INCREASING CLOUDINESS. SHOWERS BEGINNING LATE IN THE
EVENING. RISK OF A THUNDERSTORM OVERNIGHT. WIND SOUTHWEST 20 KM/H
GUSTING TO 40 BECOMING SOUTHEAST 30 GUSTING TO 50 NEAR MIDNIGHT THEN
SOUTHWEST 40 GUSTING TO 60 BEFORE MORNING. LOW 13.
CITY OF HAMILTON.
TONIGHT..A FEW SHOWERS ENDING BEFORE MORNING THEN MAINLY CLOUDY WITH
30 PERCENT CHANCE OF SHOWERS. RISK OF A THUNDERSTORM LATE THIS
EVENING AND OVERNIGHT. LOW 13.
WEDNESDAY..MAINLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS IN THE
MORNING AND EARLY IN THE AFTERNOON. CLEARING LATE IN THE AFTERNOON.
WIND BECOMING SOUTHWEST 20 KM/H GUSTING TO 40 IN THE MORNING.
HIGH 22. UV INDEX 7 OR HIGH.
WEDNESDAY NIGHT..BECOMING CLOUDY IN THE EVENING WITH SHOWERS. RISK OF
A THUNDERSTORM OVERNIGHT. WIND SOUTHWEST 20 KM/H GUSTING TO 40
BECOMING LIGHT IN THE EVENING. WIND BECOMING SOUTHWEST 40 GUSTING TO
70 AFTER MIDNIGHT. LOW 15.
REMAINDER UNCHANGED.
END
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