778
FPCN11 CWTO 081051 AAA
UPDATED FORECASTS FOR SOUTHERN ONTARIO AND THE NATIONAL CAPITAL
REGION ISSUED BY ENVIRONMENT CANADA AT 6:51 A.M. EDT SATURDAY 8
AUGUST 2026 FOR TODAY AND SUNDAY.
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 11:00 A.M. EDT.
DUNNVILLE - CALEDONIA - HALDIMAND.
TODAY..A MIX OF SUN AND CLOUD WITH 70 PERCENT CHANCE OF SHOWERS AND
RISK OF A THUNDERSTORM. FOG PATCHES DISSIPATING THIS MORNING. WIND
BECOMING SOUTHWEST 20 KM/H GUSTING TO 40 THIS MORNING. HIGH 27.
HUMIDEX 35. UV INDEX 8 OR VERY HIGH.
TONIGHT..PARTLY CLOUDY WITH 70 PERCENT CHANCE OF SHOWERS THIS EVENING
AND RISK OF A THUNDERSTORM. CLEARING OVERNIGHT. LOW 15.
SUNDAY..SUNNY. HIGH 27. HUMIDEX 31. UV INDEX 8 OR VERY HIGH.
NIAGARA FALLS - WELLAND - SOUTHERN NIAGARA REGION.
TODAY..A FEW SHOWERS ENDING THIS MORNING THEN A MIX OF SUN AND CLOUD.
70 PERCENT CHANCE OF SHOWERS LATE THIS AFTERNOON. RISK OF A
THUNDERSTORM. FOG PATCHES DISSIPATING THIS MORNING. WIND BECOMING
SOUTHWEST 30 KM/H GUSTING TO 50 THIS MORNING. HIGH 28. HUMIDEX 37.
UV INDEX 8 OR VERY HIGH.
TONIGHT..PARTLY CLOUDY WITH 70 PERCENT CHANCE OF SHOWERS THIS EVENING
AND RISK OF A THUNDERSTORM. CLEARING OVERNIGHT. WIND NORTHWEST
20 KM/H GUSTING TO 40 BECOMING LIGHT THIS EVENING. LOW 19.
SUNDAY..SUNNY. HIGH 28. HUMIDEX 33. UV INDEX 8 OR VERY HIGH.
ST. CATHARINES - GRIMSBY - NORTHERN NIAGARA REGION.
TODAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF SHOWERS CHANGING
TO 70 PERCENT CHANCE OF SHOWERS THIS AFTERNOON. RISK OF A
THUNDERSTORM. FOG PATCHES DISSIPATING THIS MORNING. WIND BECOMING
SOUTHWEST 30 KM/H GUSTING TO 50 THIS MORNING. HIGH 28. HUMIDEX 37.
UV INDEX 8 OR VERY HIGH.
TONIGHT..PARTLY CLOUDY WITH 70 PERCENT CHANCE OF SHOWERS THIS EVENING
AND RISK OF A THUNDERSTORM. CLEARING OVERNIGHT. WIND NORTH 30 KM/H
GUSTING TO 50 BECOMING LIGHT THIS EVENING. WIND BECOMING NORTHWEST
20 BEFORE MORNING. LOW 19.
SUNDAY..SUNNY. WIND NORTHWEST 20 KM/H BECOMING LIGHT EARLY IN THE
MORNING. HIGH 28. HUMIDEX 33. UV INDEX 8 OR VERY HIGH.
COBOURG - COLBORNE - WESTERN NORTHUMBERLAND COUNTY.
TODAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF SHOWERS CHANGING
TO 70 PERCENT CHANCE OF SHOWERS THIS AFTERNOON. RISK OF A
THUNDERSTORM. FOG DISSIPATING THIS MORNING. WIND BECOMING SOUTHWEST
30 KM/H THIS MORNING THEN LIGHT THIS AFTERNOON. HIGH 28. HUMIDEX 36.
UV INDEX 8 OR VERY HIGH.
TONIGHT..PARTLY CLOUDY. 70 PERCENT CHANCE OF SHOWERS EARLY THIS
EVENING THEN 30 PERCENT CHANCE OF SHOWERS THIS EVENING. RISK OF A
THUNDERSTORM THIS EVENING. LOW 17.
SUNDAY..SUNNY. WIND NORTHWEST 20 KM/H BECOMING LIGHT LATE IN THE
MORNING. HIGH 27. HUMIDEX 32. UV INDEX 8 OR VERY HIGH.
BELLEVILLE - QUINTE WEST - EASTERN NORTHUMBERLAND COUNTY.
TODAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF SHOWERS CHANGING
TO 70 PERCENT CHANCE OF SHOWERS THIS AFTERNOON. RISK OF A
THUNDERSTORM. FOG DISSIPATING THIS MORNING. WIND BECOMING SOUTHWEST
30 KM/H THIS MORNING THEN LIGHT THIS AFTERNOON. HIGH 28. HUMIDEX 36.
UV INDEX 8 OR VERY HIGH.
TONIGHT..PARTLY CLOUDY. 70 PERCENT CHANCE OF SHOWERS EARLY THIS
EVENING THEN 30 PERCENT CHANCE OF SHOWERS THIS EVENING. RISK OF A
THUNDERSTORM THIS EVENING. LOW 17.
SUNDAY..SUNNY. WIND NORTHWEST 20 KM/H BECOMING LIGHT LATE IN THE
MORNING. HIGH 27. HUMIDEX 32. UV INDEX 8 OR VERY HIGH.
NAPANEE - CONSECON.
TODAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF SHOWERS CHANGING
TO 70 PERCENT CHANCE OF SHOWERS THIS AFTERNOON. RISK OF A
THUNDERSTORM. FOG DISSIPATING THIS MORNING. WIND BECOMING SOUTHWEST
30 KM/H THIS MORNING THEN LIGHT THIS AFTERNOON. HIGH 28. HUMIDEX 36.
UV INDEX 8 OR VERY HIGH.
TONIGHT..PARTLY CLOUDY. 70 PERCENT CHANCE OF SHOWERS EARLY THIS
EVENING THEN 30 PERCENT CHANCE OF SHOWERS THIS EVENING. RISK OF A
THUNDERSTORM THIS EVENING. LOW 17.
SUNDAY..SUNNY. WIND NORTHWEST 20 KM/H BECOMING LIGHT LATE IN THE
MORNING. HIGH 27. HUMIDEX 32. UV INDEX 8 OR VERY HIGH.
PETERBOROUGH CITY - LAKEFIELD - SOUTHERN PETERBOROUGH COUNTY.
TODAY..MAINLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS CHANGING TO
70 PERCENT CHANCE OF SHOWERS NEAR NOON. RISK OF A THUNDERSTORM. FOG
DISSIPATING THIS MORNING. WIND SOUTH 20 KM/H BECOMING NORTH 20 THIS
AFTERNOON. HIGH 28. HUMIDEX 36. UV INDEX 6 OR HIGH.
TONIGHT..PARTLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS EARLY THIS
EVENING WITH RISK OF A THUNDERSTORM. CLEARING LATE THIS EVENING.
LOW 13.
SUNDAY..SUNNY. HIGH 27. HUMIDEX 31. UV INDEX 8 OR VERY HIGH.
BAYFIELD INLET - DUNCHURCH.
TODAY..MAINLY CLOUDY. 70 PERCENT CHANCE OF SHOWERS CHANGING TO
30 PERCENT CHANCE OF SHOWERS NEAR NOON. RISK OF A THUNDERSTORM. FOG
PATCHES DISSIPATING THIS MORNING. WIND BECOMING WEST 20 KM/H LATE
THIS MORNING. HIGH 25. HUMIDEX 33. UV INDEX 7 OR HIGH.
TONIGHT..CLEARING LATE THIS EVENING. LOW 15.
SUNDAY..SUNNY. HIGH 25. HUMIDEX 29. UV INDEX 7 OR HIGH.
REMAINDER UNCHANGED.
END
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