229
FPCN11 CWTO 050346 AAB
UPDATED FORECASTS FOR SOUTHERN ONTARIO AND THE NATIONAL CAPITAL
REGION ISSUED BY ENVIRONMENT CANADA AT 11:44 P.M. EDT SATURDAY 4 JULY
2026 FOR TONIGHT SUNDAY AND SUNDAY NIGHT.
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 5:00 A.M. EDT SUNDAY.
ST. THOMAS - AYLMER - EASTERN ELGIN COUNTY.
TONIGHT..PARTLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS LATE THIS
EVENING AND AFTER MIDNIGHT WITH RISK OF A THUNDERSTORM. WIND
BECOMING EAST 20 KM/H BEFORE MORNING. LOW 20.
SUNDAY..MAINLY CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS AND RISK OF A
THUNDERSTORM. WIND EAST 20 KM/H. HIGH 26. HUMIDEX 34. UV INDEX 7 OR
HIGH.
SUNDAY NIGHT..MAINLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS EARLY IN
THE EVENING WITH RISK OF A THUNDERSTORM. WIND NORTHEAST 20 KM/H
BECOMING LIGHT IN THE EVENING. LOW 18.
SIMCOE - DELHI - NORFOLK.
TONIGHT..MAINLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS LATE THIS
EVENING AND AFTER MIDNIGHT WITH RISK OF A THUNDERSTORM. LOW 19.
SUNDAY..MAINLY CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS AND RISK OF A
THUNDERSTORM. WIND BECOMING NORTHEAST 20 KM/H GUSTING TO 40 IN THE
MORNING. HIGH 24. HUMIDEX 31. UV INDEX 8 OR VERY HIGH.
SUNDAY NIGHT..MAINLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS EARLY IN
THE EVENING WITH RISK OF A THUNDERSTORM. WIND NORTHEAST 20 KM/H
GUSTING TO 40 BECOMING LIGHT IN THE EVENING. LOW 16.
DUNNVILLE - CALEDONIA - HALDIMAND.
TONIGHT..MAINLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS LATE THIS
EVENING AND AFTER MIDNIGHT WITH RISK OF A THUNDERSTORM. LOW 19.
SUNDAY..MAINLY CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS AND RISK OF A
THUNDERSTORM. WIND BECOMING NORTHEAST 20 KM/H IN THE MORNING.
HIGH 24. HUMIDEX 30. UV INDEX 8 OR VERY HIGH.
SUNDAY NIGHT..MAINLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS EARLY IN
THE EVENING WITH RISK OF A THUNDERSTORM. WIND NORTHEAST 20 KM/H
BECOMING LIGHT IN THE EVENING. LOW 19.
WOODSTOCK - TILLSONBURG - OXFORD COUNTY.
TONIGHT..PARTLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS LATE THIS
EVENING AND AFTER MIDNIGHT WITH RISK OF A THUNDERSTORM. WIND
BECOMING EAST 20 KM/H BEFORE MORNING. LOW 20.
SUNDAY..MAINLY CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS AND RISK OF A
THUNDERSTORM. WIND NORTHEAST 20 KM/H GUSTING TO 40. HIGH 25. HUMIDEX
30. UV INDEX 8 OR VERY HIGH.
SUNDAY NIGHT..PARTLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS EARLY IN
THE EVENING WITH RISK OF A THUNDERSTORM. WIND EAST 20 KM/H GUSTING
TO 40 BECOMING LIGHT NEAR MIDNIGHT. LOW 18.
BRANTFORD - COUNTY OF BRANT.
TONIGHT..MAINLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS LATE THIS
EVENING AND AFTER MIDNIGHT WITH RISK OF A THUNDERSTORM. LOW 20.
SUNDAY..MAINLY CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS AND RISK OF A
THUNDERSTORM. WIND BECOMING NORTHEAST 20 KM/H IN THE MORNING.
HIGH 24. HUMIDEX 29. UV INDEX 8 OR VERY HIGH.
SUNDAY NIGHT..PARTLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS EARLY IN
THE EVENING WITH RISK OF A THUNDERSTORM. WIND NORTHEAST 20 KM/H
BECOMING LIGHT IN THE EVENING. LOW 18.
ST. CATHARINES - GRIMSBY - NORTHERN NIAGARA REGION.
TONIGHT..MAINLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS LATE THIS
EVENING AND AFTER MIDNIGHT WITH RISK OF A THUNDERSTORM. LOW 19.
SUNDAY..MAINLY CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS AND RISK OF A
THUNDERSTORM. WIND BECOMING NORTHEAST 20 KM/H IN THE AFTERNOON.
HIGH 24. HUMIDEX 31. UV INDEX 9 OR VERY HIGH.
SUNDAY NIGHT..PARTLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS EARLY IN
THE EVENING WITH RISK OF A THUNDERSTORM. LOW 20.
CITY OF HAMILTON.
TONIGHT..MAINLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS LATE THIS
EVENING AND AFTER MIDNIGHT WITH RISK OF A THUNDERSTORM. LOW 19.
SUNDAY..MAINLY CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS AND RISK OF A
THUNDERSTORM. WIND BECOMING NORTHEAST 20 KM/H LATE IN THE MORNING.
HIGH 24. HUMIDEX 30. UV INDEX 9 OR VERY HIGH.
SUNDAY NIGHT..PARTLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS EARLY IN
THE EVENING WITH RISK OF A THUNDERSTORM. WIND NORTHEAST 20 KM/H
BECOMING LIGHT IN THE EVENING. LOW 18 WITH TEMPERATURE RISING TO 22
BY MORNING.
COBOURG - COLBORNE - WESTERN NORTHUMBERLAND COUNTY.
TONIGHT..CLEAR. FOG PATCHES. LOW 17.
SUNDAY..SUNNY. FOG PATCHES DISSIPATING IN THE MORNING. HIGH 26.
HUMIDEX 29. UV INDEX 9 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. LOW 18.
BELLEVILLE - QUINTE WEST - EASTERN NORTHUMBERLAND COUNTY.
TONIGHT..CLEAR. FOG PATCHES. LOW 17.
SUNDAY..SUNNY. FOG PATCHES DISSIPATING IN THE MORNING. HIGH 26.
HUMIDEX 29. UV INDEX 9 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. LOW 18.
LINDSAY - SOUTHERN KAWARTHA LAKES.
TONIGHT..A FEW CLOUDS. FOG PATCHES. LOW 14.
SUNDAY..MAINLY SUNNY. FOG PATCHES DISSIPATING IN THE MORNING.
HIGH 25. HUMIDEX 28. UV INDEX 9 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. LOW 15.
PETERBOROUGH CITY - LAKEFIELD - SOUTHERN PETERBOROUGH COUNTY.
TONIGHT..CLEAR. FOG PATCHES. LOW 14.
SUNDAY..MAINLY SUNNY. FOG PATCHES DISSIPATING IN THE MORNING.
HIGH 25. HUMIDEX 28. UV INDEX 9 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. LOW 15.
REMAINDER UNCHANGED.
END
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