564
FPCN11 CWTO 162312 AAA
UPDATED FORECASTS FOR SOUTHERN ONTARIO AND THE NATIONAL CAPITAL
REGION ISSUED BY ENVIRONMENT CANADA AT 7:11 P.M. EDT SUNDAY 16 AUGUST
2026 FOR TONIGHT MONDAY AND MONDAY NIGHT.
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 5:00 A.M. EDT MONDAY.
WINDSOR - LEAMINGTON - ESSEX COUNTY.
TONIGHT..MAINLY CLOUDY. 70 PERCENT CHANCE OF SHOWERS CHANGING TO
30 PERCENT CHANCE OF SHOWERS NEAR MIDNIGHT. RISK OF A THUNDERSTORM
THIS EVENING. WIND BECOMING NORTHWEST 20 KM/H GUSTING TO 40 THIS
EVENING. LOW 20.
MONDAY..CLOUDY. BECOMING A MIX OF SUN AND CLOUD IN THE MORNING. WIND
NORTHWEST 20 KM/H GUSTING TO 40. HIGH 27. HUMIDEX 32. UV INDEX 8 OR
VERY HIGH.
MONDAY NIGHT..PARTLY CLOUDY. FOG PATCHES DEVELOPING AFTER MIDNIGHT.
WIND NORTHWEST 20 KM/H BECOMING LIGHT IN THE EVENING. LOW 16.
CHATHAM-KENT - RONDEAU PARK.
TONIGHT..CLOUDY. 70 PERCENT CHANCE OF SHOWERS CHANGING TO 30 PERCENT
CHANCE OF SHOWERS NEAR MIDNIGHT. RISK OF A THUNDERSTORM THIS
EVENING. WIND BECOMING NORTHWEST 20 KM/H GUSTING TO 40 THIS EVENING.
LOW 20.
MONDAY..MAINLY CLOUDY. WIND NORTHWEST 20 KM/H GUSTING TO 40. HIGH 27.
HUMIDEX 32. UV INDEX 8 OR VERY HIGH.
MONDAY NIGHT..PARTLY CLOUDY. FOG PATCHES DEVELOPING AFTER MIDNIGHT.
WIND NORTHWEST 20 KM/H BECOMING LIGHT IN THE EVENING. LOW 15.
SARNIA - PETROLIA - WESTERN LAMBTON COUNTY.
TONIGHT..CLOUDY. 70 PERCENT CHANCE OF SHOWERS CHANGING TO 30 PERCENT
CHANCE OF SHOWERS NEAR MIDNIGHT. RISK OF A THUNDERSTORM THIS
EVENING. WIND SOUTHWEST 20 KM/H GUSTING TO 40 BECOMING LIGHT THIS
EVENING. WIND BECOMING NORTHWEST 20 GUSTING TO 40 OVERNIGHT. LOW 19.
MONDAY..MAINLY CLOUDY. WIND NORTHWEST 30 KM/H GUSTING TO 50. HIGH 26.
HUMIDEX 31. UV INDEX 7 OR HIGH.
MONDAY NIGHT..CLEAR. INCREASING CLOUDINESS NEAR MIDNIGHT. FOG PATCHES
DEVELOPING AFTER MIDNIGHT. WIND NORTHWEST 20 KM/H BECOMING LIGHT IN
THE EVENING. LOW 15.
WATFORD - PINERY PARK - EASTERN LAMBTON COUNTY.
TONIGHT..CLOUDY. 70 PERCENT CHANCE OF SHOWERS CHANGING TO 30 PERCENT
CHANCE OF SHOWERS NEAR MIDNIGHT. RISK OF A THUNDERSTORM THIS
EVENING. WIND SOUTHWEST 20 KM/H GUSTING TO 40 BECOMING LIGHT THIS
EVENING. WIND BECOMING NORTHWEST 20 GUSTING TO 40 OVERNIGHT. LOW 19.
MONDAY..MAINLY CLOUDY. WIND NORTHWEST 30 KM/H GUSTING TO 50. HIGH 26.
HUMIDEX 31. UV INDEX 6 OR HIGH.
MONDAY NIGHT..CLOUDY. BECOMING PARTLY CLOUDY IN THE EVENING. FOG
PATCHES DEVELOPING AFTER MIDNIGHT. WIND NORTHWEST 20 KM/H BECOMING
LIGHT IN THE EVENING. LOW 14.
RODNEY - SHEDDEN - WESTERN ELGIN COUNTY.
TONIGHT..CLOUDY. 70 PERCENT CHANCE OF SHOWERS CHANGING TO 30 PERCENT
CHANCE OF SHOWERS NEAR MIDNIGHT. RISK OF A THUNDERSTORM THIS
EVENING. WIND SOUTHWEST 20 KM/H GUSTING TO 40 BECOMING LIGHT THIS
EVENING. WIND BECOMING NORTHWEST 20 GUSTING TO 40 OVERNIGHT. LOW 19.
MONDAY..CLOUDY. CLEARING LATE IN THE AFTERNOON. WIND NORTHWEST
30 KM/H GUSTING TO 50. HIGH 26. HUMIDEX 31. UV INDEX 7 OR HIGH.
MONDAY NIGHT..CLEAR. FOG PATCHES DEVELOPING AFTER MIDNIGHT. WIND
NORTHWEST 20 KM/H BECOMING LIGHT IN THE EVENING. LOW 15.
ST. THOMAS - AYLMER - EASTERN ELGIN COUNTY.
TONIGHT..CLOUDY. 70 PERCENT CHANCE OF SHOWERS CHANGING TO 30 PERCENT
CHANCE OF SHOWERS AFTER MIDNIGHT. RISK OF A THUNDERSTORM THIS
EVENING. WIND SOUTH 20 KM/H BECOMING LIGHT THIS EVENING. LOW 19.
MONDAY..CLOUDY. BECOMING A MIX OF SUN AND CLOUD IN THE AFTERNOON.
WIND BECOMING NORTHWEST 20 KM/H GUSTING TO 40 IN THE MORNING.
HIGH 26. HUMIDEX 31. UV INDEX 7 OR HIGH.
MONDAY NIGHT..CLEAR. FOG PATCHES DEVELOPING AFTER MIDNIGHT. WIND
NORTHWEST 20 KM/H BECOMING LIGHT IN THE EVENING. LOW 13.
STRATHROY - KOMOKA - WESTERN MIDDLESEX COUNTY.
TONIGHT..CLOUDY. 70 PERCENT CHANCE OF SHOWERS CHANGING TO 30 PERCENT
CHANCE OF SHOWERS NEAR MIDNIGHT. RISK OF A THUNDERSTORM THIS
EVENING. WIND SOUTHWEST 20 KM/H GUSTING TO 40 BECOMING LIGHT THIS
EVENING. WIND BECOMING NORTHWEST 20 GUSTING TO 40 OVERNIGHT. LOW 19.
MONDAY..CLOUDY. BECOMING A MIX OF SUN AND CLOUD IN THE AFTERNOON.
WIND NORTHWEST 30 KM/H GUSTING TO 50. HIGH 26. HUMIDEX 31. UV
INDEX 7 OR HIGH.
MONDAY NIGHT..CLEAR. BECOMING PARTLY CLOUDY AFTER MIDNIGHT. FOG
PATCHES DEVELOPING AFTER MIDNIGHT. WIND NORTH 20 KM/H BECOMING LIGHT
IN THE EVENING. LOW 13.
LONDON - PARKHILL - EASTERN MIDDLESEX COUNTY.
TONIGHT..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. RISK OF A
THUNDERSTORM THIS EVENING. WIND SOUTHWEST 20 KM/H GUSTING TO 40
BECOMING LIGHT THIS EVENING. WIND BECOMING NORTHWEST 20 GUSTING TO
40 OVERNIGHT. LOW 18.
MONDAY..CLOUDY. BECOMING A MIX OF SUN AND CLOUD IN THE AFTERNOON.
WIND NORTHWEST 30 KM/H GUSTING TO 50. HIGH 26. HUMIDEX 31. UV
INDEX 7 OR HIGH.
MONDAY NIGHT..CLEAR. FOG PATCHES DEVELOPING AFTER MIDNIGHT. WIND
NORTH 20 KM/H BECOMING LIGHT IN THE EVENING. LOW 13.
SIMCOE - DELHI - NORFOLK.
TONIGHT..CLOUDY. 70 PERCENT CHANCE OF SHOWERS CHANGING TO 30 PERCENT
CHANCE OF SHOWERS NEAR MIDNIGHT. RISK OF A THUNDERSTORM THIS
EVENING. WIND SOUTH 20 KM/H BECOMING LIGHT THIS EVENING. LOW 19.
MONDAY..CLOUDY. WIND BECOMING NORTHWEST 20 KM/H GUSTING TO 40 IN THE
MORNING. HIGH 26. HUMIDEX 31. UV INDEX 7 OR HIGH.
MONDAY NIGHT..PARTLY CLOUDY. CLEARING AFTER MIDNIGHT. FOG PATCHES
DEVELOPING AFTER MIDNIGHT. WIND NORTHWEST 20 KM/H GUSTING TO 40
BECOMING LIGHT IN THE EVENING. LOW 12.
CITY OF HAMILTON.
TONIGHT..CLOUDY. 70 PERCENT CHANCE OF SHOWERS CHANGING TO 30 PERCENT
CHANCE OF SHOWERS NEAR MIDNIGHT. RISK OF A THUNDERSTORM THIS
EVENING. WIND SOUTH 20 KM/H BECOMING LIGHT THIS EVENING. LOW 19.
MONDAY..CLOUDY. WIND BECOMING NORTHWEST 20 KM/H GUSTING TO 40 IN THE
MORNING. HIGH 27. HUMIDEX 31. UV INDEX 7 OR HIGH.
MONDAY NIGHT..CLOUDY. BECOMING PARTLY CLOUDY IN THE EVENING. FOG
PATCHES DEVELOPING AFTER MIDNIGHT. WIND NORTHWEST 20 KM/H GUSTING TO
40 BECOMING LIGHT IN THE EVENING. LOW 15.
BURLINGTON - OAKVILLE.
TONIGHT..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. RISK OF A
THUNDERSTORM THIS EVENING. LOW 20.
MONDAY..CLOUDY. WIND BECOMING NORTHWEST 20 KM/H GUSTING TO 40 IN THE
MORNING. HIGH 27. HUMIDEX 34. UV INDEX 7 OR HIGH.
MONDAY NIGHT..CLEARING IN THE EVENING. FOG PATCHES DEVELOPING AFTER
MIDNIGHT. WIND NORTHWEST 20 KM/H GUSTING TO 40 BECOMING LIGHT IN THE
EVENING. LOW 15.
KITCHENER - CAMBRIDGE - REGION OF WATERLOO.
TONIGHT..CLOUDY. 70 PERCENT CHANCE OF SHOWERS CHANGING TO 30 PERCENT
CHANCE OF SHOWERS NEAR MIDNIGHT. RISK OF A THUNDERSTORM THIS
EVENING. LOW 17.
MONDAY..CLOUDY. WIND NORTHWEST 20 KM/H GUSTING TO 40. HIGH 24.
HUMIDEX 30. UV INDEX 7 OR HIGH.
MONDAY NIGHT..CLEARING LATE IN THE EVENING. FOG PATCHES DEVELOPING
AFTER MIDNIGHT. WIND NORTHWEST 20 KM/H BECOMING LIGHT IN THE
EVENING. LOW 11.
REMAINDER UNCHANGED.
END
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