921
FPCN11 CWTO 182239 AAC
UPDATED FORECASTS FOR SOUTHERN ONTARIO AND THE NATIONAL CAPITAL
REGION ISSUED BY ENVIRONMENT CANADA AT 6:39 P.M. EDT SATURDAY 18 JULY
2026 FOR TONIGHT SUNDAY AND SUNDAY NIGHT.
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 5:00 A.M. EDT SUNDAY.
SIMCOE - DELHI - NORFOLK.
TONIGHT..PARTLY CLOUDY. LOCAL SMOKE. WIND NORTH 20 KM/H GUSTING TO 40
BECOMING LIGHT OVERNIGHT. LOW 14.
SUNDAY..A MIX OF SUN AND CLOUD. LOCAL SMOKE IN THE MORNING. WIND
BECOMING NORTH 20 KM/H IN THE MORNING. HIGH 24. HUMIDEX 27. UV
INDEX 8 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. LOW 11.
DUNNVILLE - CALEDONIA - HALDIMAND.
TONIGHT..CLOUDY. BECOMING PARTLY CLOUDY THIS EVENING. LOCAL SMOKE.
WIND NORTHWEST 20 KM/H GUSTING TO 40. LOW 15.
SUNDAY..A MIX OF SUN AND CLOUD. LOCAL SMOKE IN THE MORNING. WIND
NORTH 20 KM/H BECOMING LIGHT IN THE AFTERNOON. HIGH 24. HUMIDEX 28.
UV INDEX 8 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. LOW 12.
WOODSTOCK - TILLSONBURG - OXFORD COUNTY.
TONIGHT..CLOUDY. BECOMING PARTLY CLOUDY THIS EVENING. LOCAL SMOKE.
WIND NORTH 20 KM/H GUSTING TO 40 BECOMING LIGHT OVERNIGHT. LOW 15.
SUNDAY..CLEARING. LOCAL SMOKE IN THE MORNING. WIND BECOMING NORTH
20 KM/H IN THE MORNING. HIGH 24. HUMIDEX 27. UV INDEX 8 OR VERY
HIGH.
SUNDAY NIGHT..CLEAR. LOW 11.
BRANTFORD - COUNTY OF BRANT.
TONIGHT..MAINLY CLOUDY. LOCAL SMOKE. WIND NORTH 20 KM/H GUSTING TO 40
BECOMING LIGHT OVERNIGHT. LOW 15.
SUNDAY..A MIX OF SUN AND CLOUD. LOCAL SMOKE IN THE MORNING. WIND
BECOMING NORTH 20 KM/H IN THE MORNING. HIGH 24. HUMIDEX 27. UV
INDEX 8 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. LOW 11.
ST. CATHARINES - GRIMSBY - NORTHERN NIAGARA REGION.
TONIGHT..MAINLY CLOUDY. LOCAL SMOKE. WIND SOUTH 20 KM/H BECOMING
NORTHWEST 20 THIS EVENING. LOW 17.
SUNDAY..A MIX OF SUN AND CLOUD. CLEARING NEAR NOON. LOCAL SMOKE IN
THE MORNING. WIND NORTH 20 KM/H BECOMING LIGHT IN THE AFTERNOON.
HIGH 24. HUMIDEX 27. UV INDEX 8 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. LOW 15.
CITY OF HAMILTON.
TONIGHT..MAINLY CLOUDY. LOCAL SMOKE. WIND WEST 30 KM/H BECOMING NORTH
20 GUSTING TO 40 THIS EVENING THEN LIGHT OVERNIGHT. LOW 16.
SUNDAY..A MIX OF SUN AND CLOUD. CLEARING LATE IN THE MORNING. LOCAL
SMOKE IN THE MORNING. WIND BECOMING NORTH 20 KM/H IN THE MORNING.
HIGH 24. HUMIDEX 27. UV INDEX 8 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. LOW 14.
REMAINDER UNCHANGED.
END
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