763
FPCN11 CWTO 211247 AAB
UPDATED FORECASTS FOR SOUTHERN ONTARIO AND THE NATIONAL CAPITAL
REGION ISSUED BY ENVIRONMENT CANADA AT 8:46 A.M. EDT SUNDAY 21 JUNE
2026 FOR TODAY AND MONDAY.
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 11:00 A.M. EDT.
SARNIA - PETROLIA - WESTERN LAMBTON COUNTY.
TODAY..MAINLY SUNNY. HIGH 24. HUMIDEX 26. UV INDEX 9 OR VERY HIGH.
TONIGHT..MAINLY CLOUDY. PERIODS OF RAIN BEGINNING OVERNIGHT. LOW 14.
MONDAY..PERIODS OF RAIN ENDING NEAR NOON THEN A MIX OF SUN AND CLOUD
WITH 30 PERCENT CHANCE OF SHOWERS. AMOUNT 10 TO 15 MM. WIND BECOMING
NORTH 20 KM/H IN THE AFTERNOON. HIGH 21. UV INDEX 8 OR VERY HIGH.
WATFORD - PINERY PARK - EASTERN LAMBTON COUNTY.
TODAY..SUNNY. HIGH 24. HUMIDEX 26. UV INDEX 9 OR VERY HIGH.
TONIGHT..PARTLY CLOUDY. BECOMING CLOUDY AFTER MIDNIGHT THEN PERIODS
OF RAIN. LOW 13.
MONDAY..PERIODS OF RAIN ENDING NEAR NOON THEN CLOUDY WITH 30 PERCENT
CHANCE OF SHOWERS. AMOUNT 10 TO 15 MM. WIND BECOMING NORTHEAST
20 KM/H LATE IN THE MORNING. HIGH 20. UV INDEX 6 OR HIGH.
REMAINDER UNCHANGED.
END
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