383  
FPCN11 CWTO 110231 AAA  
UPDATED FORECASTS FOR SOUTHERN ONTARIO AND THE NATIONAL CAPITAL  
REGION ISSUED BY ENVIRONMENT CANADA AT 10:30 P.M. EDT WEDNESDAY 10  
JUNE 2026 FOR TONIGHT THURSDAY AND THURSDAY NIGHT.  
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 5:00 A.M. EDT THURSDAY.  
 
WINDSOR - LEAMINGTON - ESSEX COUNTY.  
TONIGHT..PARTLY CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS AND RISK OF  
A THUNDERSTORM. WIND BECOMING WEST 20 KM/H BEFORE MORNING. LOW 21.  
THURSDAY..MAINLY CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. RISK OF A  
THUNDERSTORM. WIND WEST 20 KM/H BECOMING LIGHT IN THE MORNING. WIND  
BECOMING WEST 20 GUSTING TO 40 IN THE AFTERNOON. HIGH 31. HUMIDEX  
40. UV INDEX 9 OR VERY HIGH.  
THURSDAY NIGHT..MAINLY CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. RISK  
OF A THUNDERSTORM. WIND WEST 20 KM/H GUSTING TO 40 BECOMING LIGHT  
NEAR MIDNIGHT. LOW 21.  
 
CHATHAM-KENT - RONDEAU PARK.  
TONIGHT..PARTLY CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS AND RISK OF  
A THUNDERSTORM. WIND BECOMING WEST 20 KM/H BEFORE MORNING. LOW 21.  
THURSDAY..MAINLY CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. RISK OF A  
THUNDERSTORM. WIND WEST 20 KM/H BECOMING LIGHT IN THE MORNING. WIND  
BECOMING WEST 20 GUSTING TO 40 IN THE AFTERNOON. HIGH 31. HUMIDEX  
40. UV INDEX 9 OR VERY HIGH.  
THURSDAY NIGHT..MAINLY CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. RISK  
OF A THUNDERSTORM. WIND WEST 20 KM/H GUSTING TO 40 BECOMING LIGHT  
NEAR MIDNIGHT. LOW 21.  
 
SARNIA - LAMBTON.  
TONIGHT..PARTLY CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS OR  
THUNDERSTORMS. WIND BECOMING WEST 20 KM/H BEFORE MORNING. LOW 22.  
THURSDAY..A MIX OF SUN AND CLOUD WITH 60 PERCENT CHANCE OF SHOWERS OR  
THUNDERSTORMS. WIND WEST 20 KM/H BECOMING LIGHT IN THE MORNING. WIND  
BECOMING SOUTHWEST 20 GUSTING TO 40 IN THE AFTERNOON. HIGH 31.  
HUMIDEX 40. UV INDEX 10 OR VERY HIGH.  
THURSDAY NIGHT..MAINLY CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. RISK  
OF A THUNDERSTORM. WIND SOUTHWEST 20 KM/H GUSTING TO 40 BECOMING  
LIGHT IN THE EVENING. WIND BECOMING SOUTH 20 AFTER MIDNIGHT. LOW 21.  
 
ELGIN.  
TONIGHT..PARTLY CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS AND RISK OF  
A THUNDERSTORM. LOW 21.  
THURSDAY..A MIX OF SUN AND CLOUD WITH 60 PERCENT CHANCE OF SHOWERS.  
RISK OF A THUNDERSTORM. WIND BECOMING SOUTHWEST 20 KM/H GUSTING TO  
40 IN THE AFTERNOON. HIGH 30. HUMIDEX 40. UV INDEX 9 OR VERY HIGH.  
THURSDAY NIGHT..MAINLY CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. RISK  
OF A THUNDERSTORM. WIND SOUTHWEST 20 KM/H GUSTING TO 40. LOW 20.  
 
LONDON - MIDDLESEX.  
TONIGHT..PARTLY CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS AND RISK OF  
A THUNDERSTORM. LOW 22.  
THURSDAY..A MIX OF SUN AND CLOUD WITH 60 PERCENT CHANCE OF SHOWERS.  
RISK OF A THUNDERSTORM. WIND BECOMING SOUTHWEST 20 KM/H GUSTING TO  
40 IN THE MORNING. HIGH 30. HUMIDEX 38. UV INDEX 10 OR VERY HIGH.  
THURSDAY NIGHT..MAINLY CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. RISK  
OF A THUNDERSTORM. WIND SOUTHWEST 20 KM/H GUSTING TO 40 BECOMING  
LIGHT IN THE EVENING. LOW 19.  
 
REMAINDER UNCHANGED.  
 
END  
 
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