005
FPCN11 CWTO 181026 AAD
UPDATED FORECASTS FOR SOUTHERN ONTARIO AND THE NATIONAL CAPITAL
REGION ISSUED BY ENVIRONMENT CANADA AT 6:25 A.M. EDT THURSDAY 18 JUNE
2026 FOR TODAY AND FRIDAY.
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 11:00 A.M. EDT.
WINDSOR - LEAMINGTON - ESSEX COUNTY.
TODAY..CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS. RISK OF A
THUNDERSTORM EARLY THIS MORNING. WIND WEST 40 KM/H GUSTING TO 70.
HIGH 22. HUMIDEX 25. UV INDEX 6 OR HIGH.
TONIGHT..MAINLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS EARLY THIS
EVENING. CLEARING LATE THIS EVENING. WIND NORTHWEST 30 KM/H BECOMING
LIGHT LATE THIS EVENING. LOW 13.
FRIDAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF SHOWERS IN THE
AFTERNOON. WIND BECOMING NORTHWEST 30 KM/H GUSTING TO 50 IN THE
MORNING. HIGH 23. HUMIDEX 25. UV INDEX 8 OR VERY HIGH.
CHATHAM-KENT - RONDEAU PARK.
TODAY..CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS. RISK OF A
THUNDERSTORM EARLY THIS MORNING. WIND WEST 40 KM/H GUSTING TO 70.
HIGH 22. HUMIDEX 25. UV INDEX 6 OR HIGH.
TONIGHT..MAINLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS EARLY THIS
EVENING. CLEARING THIS EVENING. WIND NORTHWEST 30 KM/H BECOMING
LIGHT LATE THIS EVENING. LOW 13.
FRIDAY..SUNNY EARLY IN THE MORNING THEN A MIX OF SUN AND CLOUD WITH
30 PERCENT CHANCE OF SHOWERS IN THE AFTERNOON. WIND BECOMING
NORTHWEST 30 KM/H GUSTING TO 50 IN THE MORNING. HIGH 23. HUMIDEX 25.
UV INDEX 8 OR VERY HIGH.
SARNIA - PETROLIA - WESTERN LAMBTON COUNTY.
TODAY..CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS. RISK OF A
THUNDERSTORM EARLY THIS MORNING. WIND WEST 20 KM/H INCREASING TO 40
GUSTING TO 70 THIS MORNING. HIGH 21. UV INDEX 6 OR HIGH.
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS EARLY THIS
EVENING. CLEARING THIS EVENING. WIND WEST 30 KM/H GUSTING TO 50
BECOMING LIGHT LATE THIS EVENING. LOW 12.
FRIDAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF SHOWERS IN THE
AFTERNOON. WIND BECOMING WEST 30 KM/H GUSTING TO 50 IN THE MORNING.
HIGH 21. UV INDEX 7 OR HIGH.
WATFORD - PINERY PARK - EASTERN LAMBTON COUNTY.
TODAY..CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS. RISK OF A
THUNDERSTORM EARLY THIS MORNING. WIND WEST 20 KM/H INCREASING TO 40
GUSTING TO 70 THIS MORNING. HIGH 21. UV INDEX 7 OR HIGH.
TONIGHT..CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS EARLY THIS EVENING
THEN PARTLY CLOUDY. WIND WEST 30 KM/H GUSTING TO 50 BECOMING LIGHT
LATE THIS EVENING. LOW 12.
FRIDAY..MAINLY SUNNY. INCREASING CLOUDINESS IN THE MORNING THEN
30 PERCENT CHANCE OF SHOWERS IN THE AFTERNOON. WIND BECOMING WEST
30 KM/H GUSTING TO 50 IN THE MORNING. HIGH 21. UV INDEX 7 OR HIGH.
RODNEY - SHEDDEN - WESTERN ELGIN COUNTY.
TODAY..CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS. RISK OF A
THUNDERSTORM THIS MORNING. WIND SOUTHWEST 20 KM/H INCREASING TO 40
GUSTING TO 70 THIS MORNING. HIGH 21. HUMIDEX 25. UV INDEX 6 OR HIGH.
TONIGHT..PARTLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS EARLY THIS
EVENING. CLEARING NEAR MIDNIGHT. WIND NORTHWEST 20 KM/H GUSTING TO
40 BECOMING LIGHT LATE THIS EVENING. LOW 12.
FRIDAY..SUNNY EARLY IN THE MORNING THEN A MIX OF SUN AND CLOUD WITH
30 PERCENT CHANCE OF SHOWERS IN THE AFTERNOON. WIND BECOMING WEST
20 KM/H GUSTING TO 40 IN THE MORNING. HIGH 21. UV INDEX 7 OR HIGH.
ST. THOMAS - AYLMER - EASTERN ELGIN COUNTY.
TODAY..CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS. RISK OF A
THUNDERSTORM THIS MORNING. WIND SOUTHWEST 20 KM/H INCREASING TO 40
GUSTING TO 70 THIS MORNING. HIGH 21. HUMIDEX 25. UV INDEX 6 OR HIGH.
TONIGHT..MAINLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS EARLY THIS
EVENING. CLEARING THIS EVENING. WIND NORTHWEST 20 KM/H GUSTING TO 40
BECOMING LIGHT LATE THIS EVENING. LOW 12.
FRIDAY..SUNNY EARLY IN THE MORNING THEN A MIX OF SUN AND CLOUD WITH
30 PERCENT CHANCE OF SHOWERS IN THE AFTERNOON. WIND BECOMING WEST
20 KM/H GUSTING TO 40 IN THE MORNING. HIGH 21. UV INDEX 7 OR HIGH.
STRATHROY - KOMOKA - WESTERN MIDDLESEX COUNTY.
TODAY..CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS. RISK OF A
THUNDERSTORM THIS MORNING. WIND SOUTHWEST 20 KM/H BECOMING WEST 40
GUSTING TO 70 THIS MORNING. HIGH 20. UV INDEX 6 OR HIGH.
TONIGHT..MAINLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS EARLY THIS
EVENING. CLEARING THIS EVENING. WIND WEST 30 KM/H GUSTING TO 50
BECOMING LIGHT LATE THIS EVENING. LOW 12.
FRIDAY..INCREASING CLOUDINESS EARLY IN THE MORNING. 30 PERCENT CHANCE
OF SHOWERS IN THE AFTERNOON. WIND BECOMING NORTHWEST 30 KM/H GUSTING
TO 50 IN THE MORNING. HIGH 21. UV INDEX 7 OR HIGH.
LONDON - PARKHILL - EASTERN MIDDLESEX COUNTY.
TODAY..CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS. RISK OF A
THUNDERSTORM THIS MORNING. WIND SOUTHWEST 20 KM/H BECOMING WEST 40
GUSTING TO 70 THIS MORNING. HIGH 20. UV INDEX 6 OR HIGH.
TONIGHT..CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS EARLY THIS EVENING
THEN PARTLY CLOUDY. WIND WEST 30 KM/H GUSTING TO 50 BECOMING LIGHT
LATE THIS EVENING. LOW 12.
FRIDAY..INCREASING CLOUDINESS EARLY IN THE MORNING. 30 PERCENT CHANCE
OF SHOWERS IN THE AFTERNOON. WIND BECOMING NORTHWEST 30 KM/H GUSTING
TO 50 IN THE MORNING. HIGH 21. UV INDEX 7 OR HIGH.
SIMCOE - DELHI - NORFOLK.
TODAY..CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS. RISK OF A
THUNDERSTORM THIS MORNING. WIND SOUTHWEST 40 KM/H GUSTING TO 80.
HIGH 21. UV INDEX 6 OR HIGH.
TONIGHT..PARTLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS THIS EVENING.
WIND WEST 20 KM/H GUSTING TO 40 BECOMING LIGHT LATE THIS EVENING.
LOW 11.
FRIDAY..INCREASING CLOUDINESS EARLY IN THE MORNING. 30 PERCENT CHANCE
OF SHOWERS IN THE AFTERNOON. WIND BECOMING WEST 20 KM/H GUSTING TO
40 IN THE MORNING. HIGH 21. UV INDEX 7 OR HIGH.
DUNNVILLE - CALEDONIA - HALDIMAND.
TODAY..CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS. RISK OF A
THUNDERSTORM THIS MORNING. WIND SOUTHWEST 40 KM/H GUSTING TO 80.
HIGH 21. HUMIDEX 26. UV INDEX 6 OR HIGH.
TONIGHT..MAINLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS THIS EVENING.
WIND WEST 30 KM/H GUSTING TO 50 BECOMING LIGHT LATE THIS EVENING.
LOW 12.
FRIDAY..INCREASING CLOUDINESS. 30 PERCENT CHANCE OF SHOWERS IN THE
AFTERNOON. WIND BECOMING WEST 20 KM/H GUSTING TO 40 IN THE MORNING.
HIGH 21. HUMIDEX 25. UV INDEX 7 OR HIGH.
WOODSTOCK - TILLSONBURG - OXFORD COUNTY.
TODAY..CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS. RISK OF A
THUNDERSTORM THIS MORNING. WIND SOUTHWEST 20 KM/H GUSTING TO 60
BECOMING WEST 40 GUSTING TO 70 LATE THIS MORNING. HIGH 21. HUMIDEX
26. UV INDEX 6 OR HIGH.
TONIGHT..CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS THIS EVENING THEN
PARTLY CLOUDY. WIND WEST 30 KM/H GUSTING TO 50 BECOMING LIGHT LATE
THIS EVENING. LOW 11.
FRIDAY..A MIX OF SUN AND CLOUD. WIND BECOMING WEST 30 KM/H GUSTING TO
50 IN THE MORNING. HIGH 21. UV INDEX 7 OR HIGH.
BRANTFORD - COUNTY OF BRANT.
TODAY..CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS. RISK OF A
THUNDERSTORM THIS MORNING. WIND SOUTHWEST 20 KM/H GUSTING TO 60
BECOMING WEST 40 GUSTING TO 70 LATE THIS MORNING. HIGH 21. HUMIDEX
26. UV INDEX 6 OR HIGH.
TONIGHT..CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS THIS EVENING THEN
PARTLY CLOUDY. WIND WEST 30 KM/H GUSTING TO 50 BECOMING LIGHT LATE
THIS EVENING. LOW 11.
FRIDAY..INCREASING CLOUDINESS EARLY IN THE MORNING. WIND BECOMING
WEST 30 KM/H GUSTING TO 50 IN THE MORNING. HIGH 21. UV INDEX 7 OR
HIGH.
NIAGARA FALLS - WELLAND - SOUTHERN NIAGARA REGION.
TODAY..CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS. RISK OF A
THUNDERSTORM THIS MORNING. WIND SOUTHWEST 30 KM/H GUSTING TO 60
INCREASING TO 50 GUSTING TO 90 THIS MORNING. HIGH 21. HUMIDEX 26. UV
INDEX 6 OR HIGH.
TONIGHT..PARTLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS THIS EVENING.
WIND WEST 40 KM/H GUSTING TO 60 BECOMING LIGHT LATE THIS EVENING.
WIND BECOMING WEST 20 BEFORE MORNING. LOW 14.
FRIDAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF SHOWERS IN THE
AFTERNOON. WIND WEST 30 KM/H GUSTING TO 50. HIGH 22. HUMIDEX 25. UV
INDEX 8 OR VERY HIGH.
ST. CATHARINES - GRIMSBY - NORTHERN NIAGARA REGION.
TODAY..CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS. RISK OF A
THUNDERSTORM THIS MORNING. WIND SOUTH 20 KM/H BECOMING SOUTHWEST 40
GUSTING TO 80 THIS MORNING. HIGH 21. HUMIDEX 26. UV INDEX 6 OR HIGH.
TONIGHT..CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS THIS EVENING.
CLEARING OVERNIGHT. WIND WEST 40 KM/H GUSTING TO 60 BECOMING LIGHT
LATE THIS EVENING. WIND BECOMING WEST 20 BEFORE MORNING. LOW 14.
FRIDAY..SUNNY. INCREASING CLOUDINESS IN THE MORNING THEN 30 PERCENT
CHANCE OF SHOWERS IN THE AFTERNOON. WIND WEST 30 KM/H GUSTING TO 50.
HIGH 22. HUMIDEX 25. UV INDEX 8 OR VERY HIGH.
CITY OF HAMILTON.
TODAY..CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS. RISK OF A
THUNDERSTORM THIS MORNING. WIND BECOMING WEST 40 KM/H GUSTING TO 70
THIS MORNING. HIGH 21. HUMIDEX 26. UV INDEX 6 OR HIGH.
TONIGHT..CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS THIS EVENING THEN
PARTLY CLOUDY. WIND WEST 30 KM/H GUSTING TO 50 BECOMING LIGHT LATE
THIS EVENING. LOW 12.
FRIDAY..INCREASING CLOUDINESS IN THE MORNING. WIND BECOMING WEST
30 KM/H GUSTING TO 50 IN THE MORNING. HIGH 22. HUMIDEX 25. UV
INDEX 7 OR HIGH.
GODERICH - BLUEWATER - SOUTHERN HURON COUNTY.
TODAY..SHOWERS ENDING EARLY THIS MORNING THEN CLOUDY WITH 60 PERCENT
CHANCE OF SHOWERS. RISK OF A THUNDERSTORM THIS MORNING. WIND
BECOMING WEST 30 KM/H GUSTING TO 50 THIS MORNING. HIGH 17. UV
INDEX 6 OR HIGH.
TONIGHT..MAINLY CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS EARLY THIS
EVENING. CLEARING LATE THIS EVENING. WIND WEST 20 KM/H GUSTING TO 40
BECOMING LIGHT LATE THIS EVENING. WIND BECOMING WEST 20 BEFORE
MORNING. LOW 11.
FRIDAY..A MIX OF SUN AND CLOUD. WIND NORTHWEST 30 KM/H GUSTING TO 50.
HIGH 21. UV INDEX 8 OR VERY HIGH.
WINGHAM - BLYTH - NORTHERN HURON COUNTY.
TODAY..SHOWERS ENDING EARLY THIS MORNING THEN CLOUDY WITH 60 PERCENT
CHANCE OF SHOWERS. RISK OF A THUNDERSTORM THIS MORNING. WIND
BECOMING WEST 30 KM/H GUSTING TO 50 THIS MORNING. HIGH 17. UV
INDEX 6 OR HIGH.
TONIGHT..CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS EARLY THIS EVENING.
CLEARING LATE THIS EVENING. WIND WEST 20 KM/H GUSTING TO 40 BECOMING
LIGHT LATE THIS EVENING. WIND BECOMING WEST 20 BEFORE MORNING.
LOW 11.
FRIDAY..MAINLY CLOUDY. WIND NORTHWEST 30 KM/H GUSTING TO 50. HIGH 21.
UV INDEX 8 OR VERY HIGH.
STRATFORD - MITCHELL - SOUTHERN PERTH COUNTY.
TODAY..SHOWERS ENDING EARLY THIS MORNING THEN CLOUDY WITH 60 PERCENT
CHANCE OF SHOWERS. RISK OF A THUNDERSTORM THIS MORNING. WIND
BECOMING WEST 30 KM/H GUSTING TO 50 THIS MORNING. HIGH 17. UV
INDEX 6 OR HIGH.
TONIGHT..CLOUDY. 40 PERCENT CHANCE OF SHOWERS EARLY THIS EVENING.
BECOMING PARTLY CLOUDY NEAR MIDNIGHT. WIND WEST 20 KM/H GUSTING TO
40 BECOMING LIGHT LATE THIS EVENING. WIND BECOMING WEST 20 BEFORE
MORNING. LOW 11.
FRIDAY..MAINLY CLOUDY. WIND NORTHWEST 30 KM/H GUSTING TO 50. HIGH 21.
UV INDEX 7 OR HIGH.
LISTOWEL - MILVERTON - NORTHERN PERTH COUNTY.
TODAY..SHOWERS ENDING EARLY THIS MORNING THEN CLOUDY WITH 60 PERCENT
CHANCE OF SHOWERS. RISK OF A THUNDERSTORM THIS MORNING. WIND
BECOMING WEST 30 KM/H GUSTING TO 50 THIS MORNING. HIGH 17. UV
INDEX 6 OR HIGH.
TONIGHT..CLOUDY. 40 PERCENT CHANCE OF SHOWERS EARLY THIS EVENING.
CLEARING OVERNIGHT. WIND WEST 20 KM/H GUSTING TO 40 BECOMING LIGHT
LATE THIS EVENING. WIND BECOMING WEST 20 BEFORE MORNING. LOW 11.
FRIDAY..MAINLY CLOUDY. WIND NORTHWEST 30 KM/H GUSTING TO 50. HIGH 21.
UV INDEX 7 OR HIGH.
KITCHENER - CAMBRIDGE - REGION OF WATERLOO.
TODAY..SHOWERS ENDING THIS MORNING THEN CLOUDY WITH 60 PERCENT CHANCE
OF SHOWERS. RISK OF A THUNDERSTORM EARLY THIS MORNING. WIND EAST
20 KM/H BECOMING WEST 40 GUSTING TO 60 THIS MORNING. HIGH 19. UV
INDEX 6 OR HIGH.
TONIGHT..CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS THIS EVENING THEN
PARTLY CLOUDY. WIND WEST 40 KM/H GUSTING TO 60 DIMINISHING TO 20
GUSTING TO 40 THIS EVENING THEN BECOMING LIGHT LATE THIS EVENING.
LOW 12.
FRIDAY..INCREASING CLOUDINESS EARLY IN THE MORNING. WIND BECOMING
NORTHWEST 30 KM/H GUSTING TO 50 IN THE MORNING. HIGH 21. UV INDEX 7
OR HIGH.
GUELPH - ERIN - SOUTHERN WELLINGTON COUNTY.
TODAY..SHOWERS ENDING THIS MORNING THEN CLOUDY WITH 60 PERCENT CHANCE
OF SHOWERS. RISK OF A THUNDERSTORM EARLY THIS MORNING. WIND EAST
20 KM/H BECOMING WEST 40 GUSTING TO 60 THIS MORNING. HIGH 19. UV
INDEX 6 OR HIGH.
TONIGHT..CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS THIS EVENING THEN
PARTLY CLOUDY. WIND WEST 40 KM/H GUSTING TO 60 DIMINISHING TO 20
GUSTING TO 40 THIS EVENING THEN BECOMING LIGHT LATE THIS EVENING.
LOW 12.
FRIDAY..INCREASING CLOUDINESS EARLY IN THE MORNING. WIND BECOMING
NORTHWEST 30 KM/H GUSTING TO 50 IN THE MORNING. HIGH 21. UV INDEX 7
OR HIGH.
REMAINDER UNCHANGED.
END
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