298
FPCN11 CWTO 120045 AAA
UPDATED FORECASTS FOR SOUTHERN ONTARIO AND THE NATIONAL CAPITAL
REGION ISSUED BY ENVIRONMENT CANADA AT 8:44 P.M. EDT MONDAY 11 MAY
2026 FOR TONIGHT TUESDAY AND TUESDAY NIGHT.
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 5:00 A.M. EDT TUESDAY.
WINDSOR - LEAMINGTON - ESSEX COUNTY.
TONIGHT..CLEAR. LOW PLUS 2 WITH RISK OF FROST.
TUESDAY..SUNNY IN THE MORNING AND EARLY IN THE AFTERNOON THEN A MIX
OF SUN AND CLOUD WITH 40 PERCENT CHANCE OF SHOWERS LATE IN THE
AFTERNOON. WIND BECOMING SOUTHEAST 20 KM/H GUSTING TO 40 LATE IN THE
AFTERNOON. HIGH 16. UV INDEX 7 OR HIGH.
TUESDAY NIGHT..CLOUDY. 40 PERCENT CHANCE OF SHOWERS IN THE EVENING.
SHOWERS BEGINNING NEAR MIDNIGHT. RISK OF A THUNDERSTORM OVERNIGHT.
AMOUNT 10 TO 15 MM. WIND SOUTHEAST 20 KM/H GUSTING TO 50 BECOMING
SOUTHWEST 30 GUSTING TO 50 AFTER MIDNIGHT. LOW 13.
CHATHAM-KENT - RONDEAU PARK.
TONIGHT..CLEAR. LOW ZERO WITH PATCHY FROST.
TUESDAY..SUNNY IN THE MORNING AND EARLY IN THE AFTERNOON THEN A MIX
OF SUN AND CLOUD WITH 40 PERCENT CHANCE OF SHOWERS LATE IN THE
AFTERNOON. WIND BECOMING SOUTHEAST 20 KM/H GUSTING TO 40 LATE IN THE
AFTERNOON. HIGH 15. UV INDEX 7 OR HIGH.
TUESDAY NIGHT..CLOUDY. 40 PERCENT CHANCE OF SHOWERS IN THE EVENING.
SHOWERS BEGINNING NEAR MIDNIGHT. RISK OF A THUNDERSTORM OVERNIGHT.
AMOUNT 10 TO 15 MM. WIND SOUTHEAST 20 KM/H GUSTING TO 50 BECOMING
SOUTHWEST 30 GUSTING TO 50 AFTER MIDNIGHT. LOW 12.
SARNIA - PETROLIA - WESTERN LAMBTON COUNTY.
TONIGHT..CLEAR. LOW ZERO WITH FROST.
TUESDAY..SUNNY IN THE MORNING AND EARLY IN THE AFTERNOON THEN A MIX
OF SUN AND CLOUD WITH 40 PERCENT CHANCE OF SHOWERS LATE IN THE
AFTERNOON. HIGH 14. UV INDEX 7 OR HIGH.
TUESDAY NIGHT..CLOUDY. 40 PERCENT CHANCE OF SHOWERS IN THE EVENING.
SHOWERS BEGINNING NEAR MIDNIGHT. RISK OF A THUNDERSTORM OVERNIGHT.
WIND BECOMING SOUTH 20 KM/H GUSTING TO 40 BEFORE MORNING. LOW 11.
WATFORD - PINERY PARK - EASTERN LAMBTON COUNTY.
TONIGHT..CLEAR. LOW ZERO WITH FROST.
TUESDAY..SUNNY IN THE MORNING AND EARLY IN THE AFTERNOON THEN A MIX
OF SUN AND CLOUD WITH 40 PERCENT CHANCE OF SHOWERS LATE IN THE
AFTERNOON. HIGH 14. UV INDEX 7 OR HIGH.
TUESDAY NIGHT..CLOUDY. 40 PERCENT CHANCE OF SHOWERS IN THE EVENING.
SHOWERS BEGINNING NEAR MIDNIGHT. RISK OF A THUNDERSTORM OVERNIGHT.
WIND BECOMING SOUTH 20 KM/H GUSTING TO 40 BEFORE MORNING. LOW 11.
STRATHROY - KOMOKA - WESTERN MIDDLESEX COUNTY.
TONIGHT..CLEAR. LOW MINUS 1 WITH FROST.
TUESDAY..SUNNY. INCREASING CLOUDINESS IN THE AFTERNOON THEN
40 PERCENT CHANCE OF SHOWERS LATE IN THE AFTERNOON. HIGH 13. UV
INDEX 7 OR HIGH.
TUESDAY NIGHT..CLOUDY. 40 PERCENT CHANCE OF SHOWERS IN THE EVENING.
SHOWERS BEGINNING NEAR MIDNIGHT. RISK OF A THUNDERSTORM OVERNIGHT.
AMOUNT 10 TO 15 MM. WIND BECOMING SOUTH 20 KM/H AFTER MIDNIGHT.
LOW 10.
LONDON - PARKHILL - EASTERN MIDDLESEX COUNTY.
TONIGHT..CLEAR. LOW MINUS 1 WITH FROST.
TUESDAY..SUNNY. INCREASING CLOUDINESS IN THE AFTERNOON THEN
40 PERCENT CHANCE OF SHOWERS LATE IN THE AFTERNOON. HIGH 13. UV
INDEX 7 OR HIGH.
TUESDAY NIGHT..CLOUDY. 40 PERCENT CHANCE OF SHOWERS IN THE EVENING.
SHOWERS BEGINNING NEAR MIDNIGHT. RISK OF A THUNDERSTORM OVERNIGHT.
AMOUNT 10 TO 15 MM. WIND BECOMING SOUTH 20 KM/H AFTER MIDNIGHT.
LOW 10.
NIAGARA FALLS - WELLAND - SOUTHERN NIAGARA REGION.
TONIGHT..CLEAR. LOW PLUS 1 WITH PATCHY FROST.
TUESDAY..SUNNY. BECOMING A MIX OF SUN AND CLOUD IN THE AFTERNOON.
HIGH 15. UV INDEX 7 OR HIGH.
TUESDAY NIGHT..CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS IN THE
EVENING AND AFTER MIDNIGHT. SHOWERS BEGINNING AFTER MIDNIGHT. RISK
OF A THUNDERSTORM OVERNIGHT. WIND BECOMING SOUTH 20 KM/H GUSTING TO
40 BEFORE MORNING. LOW 9.
ST. CATHARINES - GRIMSBY - NORTHERN NIAGARA REGION.
TONIGHT..CLEAR. LOW PLUS 1 WITH PATCHY FROST.
TUESDAY..SUNNY. BECOMING A MIX OF SUN AND CLOUD IN THE AFTERNOON.
HIGH 15. UV INDEX 7 OR HIGH.
TUESDAY NIGHT..CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS IN THE
EVENING AND AFTER MIDNIGHT. SHOWERS BEGINNING AFTER MIDNIGHT. RISK
OF A THUNDERSTORM OVERNIGHT. WIND BECOMING SOUTH 20 KM/H GUSTING TO
40 BEFORE MORNING. LOW 9.
PICTON - SANDBANKS PARK.
TONIGHT..PARTLY CLOUDY. BECOMING CLEAR LATE THIS EVENING. LOW PLUS 1
WITH PATCHY FROST.
TUESDAY..SUNNY. HIGH 10. UV INDEX 6 OR HIGH.
TUESDAY NIGHT..BECOMING CLOUDY IN THE EVENING WITH 40 PERCENT CHANCE
OF SHOWERS IN THE EVENING AND OVERNIGHT. RAIN BEGINNING BEFORE
MORNING. WIND BECOMING EAST 20 KM/H AFTER MIDNIGHT. LOW 6.
REMAINDER UNCHANGED.
END
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