303
FPCN11 CWTO 091125 AAB
UPDATED FORECASTS FOR SOUTHERN ONTARIO AND THE NATIONAL CAPITAL
REGION ISSUED BY ENVIRONMENT CANADA AT 7:24 A.M. EDT WEDNESDAY 9
SEPTEMBER 2026 FOR TODAY AND THURSDAY.
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 11:00 A.M. EDT.
SARNIA - PETROLIA - WESTERN LAMBTON COUNTY.
TODAY..SHOWERS WITH RISK OF A THUNDERSTORM. LOCAL AMOUNT 10 TO 20 MM.
WIND SOUTHWEST 30 KM/H GUSTING TO 50. HIGH 25. HUMIDEX 33. UV
INDEX 3 OR MODERATE.
TONIGHT..A FEW SHOWERS ENDING THIS EVENING THEN PARTLY CLOUDY. RISK
OF A THUNDERSTORM EARLY THIS EVENING. WIND WEST 20 KM/H BECOMING
LIGHT AFTER MIDNIGHT. LOW 17.
THURSDAY..A MIX OF SUN AND CLOUD. HIGH 23. HUMIDEX 27. UV INDEX 7 OR
HIGH.
WATFORD - PINERY PARK - EASTERN LAMBTON COUNTY.
TODAY..SHOWERS WITH RISK OF A THUNDERSTORM. LOCAL AMOUNT 10 TO 20 MM.
WIND SOUTHWEST 30 KM/H GUSTING TO 50. HIGH 25. HUMIDEX 33. UV
INDEX 3 OR MODERATE.
TONIGHT..A FEW SHOWERS ENDING THIS EVENING THEN PARTLY CLOUDY. RISK
OF A THUNDERSTORM EARLY THIS EVENING. WIND SOUTHWEST 20 KM/H
BECOMING LIGHT THIS EVENING. LOW 17.
THURSDAY..A MIX OF SUN AND CLOUD. WIND BECOMING SOUTHWEST 20 KM/H
LATE IN THE MORNING. HIGH 23. HUMIDEX 27. UV INDEX 7 OR HIGH.
RODNEY - SHEDDEN - WESTERN ELGIN COUNTY.
TODAY..SHOWERS WITH RISK OF A THUNDERSTORM. LOCAL AMOUNT 10 TO 20 MM.
WIND BECOMING SOUTHWEST 30 KM/H GUSTING TO 50 LATE THIS MORNING.
HIGH 25. HUMIDEX 33. UV INDEX 3 OR MODERATE.
TONIGHT..A FEW SHOWERS ENDING THIS EVENING THEN CLEARING. RISK OF A
THUNDERSTORM EARLY THIS EVENING. WIND WEST 20 KM/H BECOMING LIGHT
THIS EVENING. LOW 18.
THURSDAY..MAINLY CLOUDY. HIGH 24. HUMIDEX 28. UV INDEX 7 OR HIGH.
ST. THOMAS - AYLMER - EASTERN ELGIN COUNTY.
TODAY..SHOWERS WITH RISK OF A THUNDERSTORM. LOCAL AMOUNT 10 TO 20 MM.
WIND BECOMING SOUTHWEST 30 KM/H GUSTING TO 50 LATE THIS MORNING.
HIGH 25. HUMIDEX 33. UV INDEX 3 OR MODERATE.
TONIGHT..A FEW SHOWERS ENDING THIS EVENING THEN PARTLY CLOUDY. RISK
OF A THUNDERSTORM EARLY THIS EVENING. WIND WEST 20 KM/H BECOMING
LIGHT THIS EVENING. LOW 18.
THURSDAY..A MIX OF SUN AND CLOUD. HIGH 24. HUMIDEX 28. UV INDEX 7 OR
HIGH.
STRATHROY - KOMOKA - WESTERN MIDDLESEX COUNTY.
TODAY..SHOWERS WITH RISK OF A THUNDERSTORM. LOCAL AMOUNT 10 TO 20 MM.
WIND BECOMING SOUTHWEST 30 KM/H GUSTING TO 50 LATE THIS MORNING.
HIGH 23. HUMIDEX 33. UV INDEX 3 OR MODERATE.
TONIGHT..A FEW SHOWERS ENDING THIS EVENING THEN CLEARING. RISK OF A
THUNDERSTORM EARLY THIS EVENING. WIND SOUTHWEST 20 KM/H GUSTING TO
40 BECOMING LIGHT THIS EVENING. LOW 17.
THURSDAY..CLEARING IN THE MORNING. HIGH 23. HUMIDEX 26. UV INDEX 7 OR
HIGH.
LONDON - PARKHILL - EASTERN MIDDLESEX COUNTY.
TODAY..SHOWERS WITH RISK OF A THUNDERSTORM. LOCAL AMOUNT 10 TO 20 MM.
WIND BECOMING SOUTHWEST 30 KM/H GUSTING TO 50 LATE THIS MORNING.
HIGH 23. HUMIDEX 33. UV INDEX 3 OR MODERATE.
TONIGHT..A FEW SHOWERS ENDING THIS EVENING THEN PARTLY CLOUDY. RISK
OF A THUNDERSTORM EARLY THIS EVENING. WIND WEST 20 KM/H BECOMING
LIGHT THIS EVENING. LOW 17.
THURSDAY..A MIX OF SUN AND CLOUD. HIGH 23. HUMIDEX 26. UV INDEX 7 OR
HIGH.
REMAINDER UNCHANGED.
END
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