481  
FPCN11 CWTO 311703 AAB  
UPDATED FORECASTS FOR SOUTHERN ONTARIO AND THE NATIONAL CAPITAL  
REGION ISSUED BY ENVIRONMENT CANADA AT 1:02 P.M. EDT FRIDAY 31 JULY  
2026 FOR TODAY AND SATURDAY.  
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 3:30 P.M. EDT.  
 
CHATHAM-KENT - RONDEAU PARK.  
TODAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF SHOWERS. HIGH 30.  
HUMIDEX 33. UV INDEX 9 OR VERY HIGH.  
TONIGHT..PARTLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS OVERNIGHT.  
LOW 22.  
SATURDAY..CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS IN THE MORNING AND  
EARLY IN THE AFTERNOON. SHOWERS BEGINNING IN THE AFTERNOON. RISK OF  
A THUNDERSTORM IN THE MORNING AND AFTERNOON. HIGH 28. HUMIDEX 32. UV  
INDEX 8 OR VERY HIGH.  
 
WATFORD - PINERY PARK - EASTERN LAMBTON COUNTY.  
TODAY..SUNNY EARLY THIS AFTERNOON THEN A MIX OF SUN AND CLOUD WITH  
30 PERCENT CHANCE OF SHOWERS. HIGH 30. HUMIDEX 33. UV INDEX 9 OR  
VERY HIGH.  
TONIGHT..CLEAR EARLY THIS EVENING THEN PARTLY CLOUDY WITH 40 PERCENT  
CHANCE OF SHOWERS OVERNIGHT. LOW 21.  
SATURDAY..MAINLY CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS IN THE  
MORNING AND EARLY IN THE AFTERNOON. SHOWERS BEGINNING IN THE  
AFTERNOON. RISK OF A THUNDERSTORM IN THE MORNING AND AFTERNOON.  
HIGH 28. HUMIDEX 33. UV INDEX 9 OR VERY HIGH.  
 
RODNEY - SHEDDEN - WESTERN ELGIN COUNTY.  
TODAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF SHOWERS. HIGH 29.  
HUMIDEX 34. UV INDEX 9 OR VERY HIGH.  
TONIGHT..PARTLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS OVERNIGHT.  
LOW 20.  
SATURDAY..MAINLY CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS AND RISK OF  
A THUNDERSTORM. HIGH 28. HUMIDEX 32. UV INDEX 7 OR HIGH.  
 
STRATHROY - KOMOKA - WESTERN MIDDLESEX COUNTY.  
TODAY..MAINLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS. HIGH 30. HUMIDEX  
35. UV INDEX 9 OR VERY HIGH.  
TONIGHT..MAINLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS OVERNIGHT.  
LOW 20.  
SATURDAY..CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS AND RISK OF A  
THUNDERSTORM. HIGH 28. HUMIDEX 32. UV INDEX 6 OR HIGH.  
 
LONDON - PARKHILL - EASTERN MIDDLESEX COUNTY.  
TODAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF SHOWERS LATE THIS  
AFTERNOON. HIGH 30. HUMIDEX 35. UV INDEX 9 OR VERY HIGH.  
TONIGHT..MAINLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS EARLY THIS  
EVENING AND OVERNIGHT. LOW 20.  
SATURDAY..MAINLY CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS AND RISK OF  
A THUNDERSTORM. HIGH 28. HUMIDEX 32. UV INDEX 7 OR HIGH.  
 
REMAINDER UNCHANGED.  
 
END  
 
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