954
FPCN11 CWTO 011220 AAA
UPDATED FORECASTS FOR SOUTHERN ONTARIO AND THE NATIONAL CAPITAL
REGION ISSUED BY ENVIRONMENT CANADA AT 8:19 A.M. EDT SATURDAY 1
AUGUST 2026 FOR TODAY AND SUNDAY.
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 11:00 A.M. EDT.
STIRLING - TWEED - MADOC.
TODAY..CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS. RISK OF A
THUNDERSTORM LATE THIS AFTERNOON. HIGH 29. HUMIDEX 37. UV INDEX 6 OR
HIGH.
TONIGHT..MAINLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS THIS EVENING.
SHOWERS BEGINNING NEAR MIDNIGHT. RISK OF A THUNDERSTORM THIS
EVENING. LOCAL AMOUNT 5 TO 10 MM. LOW 19.
SUNDAY..SHOWERS. RISK OF A THUNDERSTORM IN THE AFTERNOON. LOCAL
AMOUNT 20 TO 30 MM. WIND BECOMING NORTHEAST 20 KM/H GUSTING TO 40 IN
THE AFTERNOON. HIGH 23. HUMIDEX 30. UV INDEX 3 OR MODERATE.
TAMWORTH - SYDENHAM - SOUTH FRONTENAC.
TODAY..MAINLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS. RISK OF A
THUNDERSTORM LATE THIS AFTERNOON. HIGH 29. HUMIDEX 37. UV INDEX 8 OR
VERY HIGH.
TONIGHT..MAINLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS THIS EVENING.
SHOWERS BEGINNING NEAR MIDNIGHT. RISK OF A THUNDERSTORM THIS
EVENING. LOCAL AMOUNT 5 TO 10 MM. LOW 19.
SUNDAY..SHOWERS. RISK OF A THUNDERSTORM IN THE AFTERNOON. LOCAL
AMOUNT 20 TO 30 MM. WIND BECOMING NORTHEAST 20 KM/H GUSTING TO 40 IN
THE AFTERNOON. HIGH 23. HUMIDEX 30. UV INDEX 3 OR MODERATE.
KALADAR - BANNOCKBURN - BON ECHO PARK.
TODAY..MAINLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS. RISK OF A
THUNDERSTORM LATE THIS AFTERNOON. HIGH 28. HUMIDEX 35. UV INDEX 8 OR
VERY HIGH.
TONIGHT..MAINLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS THIS EVENING.
SHOWERS BEGINNING NEAR MIDNIGHT. RISK OF A THUNDERSTORM THIS
EVENING. LOCAL AMOUNT 5 TO 10 MM. LOW 16.
SUNDAY..SHOWERS. RISK OF A THUNDERSTORM IN THE AFTERNOON. LOCAL
AMOUNT 20 TO 30 MM. WIND BECOMING NORTHEAST 20 KM/H GUSTING TO 40 IN
THE AFTERNOON. HIGH 21. HUMIDEX 29. UV INDEX 3 OR MODERATE.
PLEVNA - SHARBOT LAKE - WESTERN LANARK COUNTY.
TODAY..MAINLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS. RISK OF A
THUNDERSTORM LATE THIS AFTERNOON. HIGH 28. HUMIDEX 35. UV INDEX 8 OR
VERY HIGH.
TONIGHT..MAINLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS THIS EVENING.
SHOWERS BEGINNING NEAR MIDNIGHT. RISK OF A THUNDERSTORM THIS
EVENING. LOCAL AMOUNT 5 TO 10 MM. LOW 17.
SUNDAY..SHOWERS. RISK OF A THUNDERSTORM IN THE AFTERNOON. LOCAL
AMOUNT 20 TO 30 MM. WIND BECOMING NORTHEAST 20 KM/H GUSTING TO 40 IN
THE AFTERNOON. HIGH 22. HUMIDEX 29. UV INDEX 3 OR MODERATE.
SMITHS FALLS - PERTH - EASTERN LANARK COUNTY.
TODAY..MAINLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS. WIND BECOMING
SOUTHWEST 20 KM/H GUSTING TO 40 EARLY THIS AFTERNOON. HIGH 28.
HUMIDEX 36. UV INDEX 8 OR VERY HIGH.
TONIGHT..MAINLY CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS. SHOWERS
BEGINNING BEFORE MORNING. RISK OF A THUNDERSTORM THIS EVENING.
LOW 18.
SUNDAY..SHOWERS. RISK OF A THUNDERSTORM IN THE AFTERNOON. LOCAL
AMOUNT 20 TO 30 MM. HIGH 23. HUMIDEX 30. UV INDEX 3 OR MODERATE.
REMAINDER UNCHANGED.
END
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