755
FPCN11 CWTO 191635 AAA
UPDATED FORECASTS FOR SOUTHERN ONTARIO AND THE NATIONAL CAPITAL
REGION ISSUED BY ENVIRONMENT CANADA AT 12:34 P.M. EDT SATURDAY 19
SEPTEMBER 2026 FOR TODAY AND SUNDAY.
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 3:30 P.M. EDT.
WINDSOR - LEAMINGTON - ESSEX COUNTY.
TODAY..SHOWERS. AMOUNT 5 TO 10 MM. WIND EAST 20 KM/H. HIGH 21.
HUMIDEX 26. UV INDEX 3 OR MODERATE.
TONIGHT..SHOWERS WITH RISK OF A THUNDERSTORM. LOCAL AMOUNT 15 TO
25 MM. WIND SOUTHEAST 20 KM/H BECOMING NORTHEAST 20 OVERNIGHT.
LOW 15.
SUNDAY..SHOWERS ENDING NEAR NOON THEN A MIX OF SUN AND CLOUD. RISK OF
A THUNDERSTORM EARLY IN THE MORNING. WIND NORTHEAST 20 KM/H GUSTING
TO 40. HIGH 21. UV INDEX 6 OR HIGH.
CHATHAM-KENT - RONDEAU PARK.
TODAY..SHOWERS. AMOUNT 5 TO 10 MM. WIND EAST 20 KM/H. HIGH 20.
HUMIDEX 25. UV INDEX 3 OR MODERATE.
TONIGHT..SHOWERS WITH RISK OF A THUNDERSTORM. LOCAL AMOUNT 15 TO
25 MM. WIND SOUTHEAST 20 KM/H BECOMING NORTHEAST 20 OVERNIGHT.
LOW 14.
SUNDAY..SHOWERS ENDING NEAR NOON THEN A MIX OF SUN AND CLOUD. RISK OF
A THUNDERSTORM EARLY IN THE MORNING. WIND NORTHEAST 20 KM/H GUSTING
TO 40. HIGH 21. UV INDEX 7 OR HIGH.
SARNIA - PETROLIA - WESTERN LAMBTON COUNTY.
TODAY..SHOWERS. WIND EAST 20 KM/H. HIGH 20. HUMIDEX 25. UV INDEX 3 OR
MODERATE.
TONIGHT..SHOWERS. RISK OF A THUNDERSTORM OVERNIGHT. WIND SOUTHEAST
20 KM/H BECOMING NORTHEAST 20 OVERNIGHT. LOW 13.
SUNDAY..SHOWERS ENDING IN THE MORNING THEN A MIX OF SUN AND CLOUD.
WIND NORTHEAST 20 KM/H GUSTING TO 40. HIGH 21. UV INDEX 6 OR HIGH.
WATFORD - PINERY PARK - EASTERN LAMBTON COUNTY.
TODAY..SHOWERS. WIND SOUTHEAST 20 KM/H. HIGH 20. UV INDEX 3 OR
MODERATE.
TONIGHT..SHOWERS. RISK OF A THUNDERSTORM OVERNIGHT. WIND EAST 20 KM/H
BECOMING LIGHT NEAR MIDNIGHT. LOW 13.
SUNDAY..SHOWERS ENDING IN THE MORNING THEN CLEARING. WIND BECOMING
NORTHEAST 20 KM/H GUSTING TO 40 IN THE MORNING. HIGH 21. UV INDEX 6
OR HIGH.
RODNEY - SHEDDEN - WESTERN ELGIN COUNTY.
TODAY..SHOWERS. WIND SOUTHEAST 20 KM/H. HIGH 20. UV INDEX 3 OR
MODERATE.
TONIGHT..SHOWERS. RISK OF A THUNDERSTORM OVERNIGHT. WIND EAST 20 KM/H
BECOMING LIGHT NEAR MIDNIGHT. LOW 13.
SUNDAY..SHOWERS ENDING IN THE MORNING THEN A MIX OF SUN AND CLOUD.
WIND BECOMING NORTHEAST 20 KM/H GUSTING TO 40 IN THE MORNING.
HIGH 21. UV INDEX 6 OR HIGH.
ST. THOMAS - AYLMER - EASTERN ELGIN COUNTY.
TODAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. WIND SOUTHEAST
20 KM/H. HIGH 20. UV INDEX 5 OR MODERATE.
TONIGHT..SHOWERS. WIND EAST 20 KM/H BECOMING LIGHT NEAR MIDNIGHT.
LOW 12.
SUNDAY..SHOWERS ENDING IN THE MORNING THEN A MIX OF SUN AND CLOUD.
WIND BECOMING NORTHEAST 20 KM/H GUSTING TO 40 IN THE MORNING.
HIGH 21. UV INDEX 6 OR HIGH.
STRATHROY - KOMOKA - WESTERN MIDDLESEX COUNTY.
TODAY..SHOWERS. WIND SOUTHEAST 20 KM/H. HIGH 20. UV INDEX 3 OR
MODERATE.
TONIGHT..SHOWERS. RISK OF A THUNDERSTORM OVERNIGHT. WIND EAST 20 KM/H
BECOMING LIGHT NEAR MIDNIGHT. LOW 13.
SUNDAY..SHOWERS ENDING IN THE MORNING THEN A MIX OF SUN AND CLOUD.
WIND BECOMING NORTHEAST 20 KM/H GUSTING TO 40 IN THE MORNING.
HIGH 21. UV INDEX 6 OR HIGH.
LONDON - PARKHILL - EASTERN MIDDLESEX COUNTY.
TODAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. WIND SOUTHEAST
20 KM/H. HIGH 19. UV INDEX 5 OR MODERATE.
TONIGHT..SHOWERS. WIND EAST 20 KM/H BECOMING LIGHT NEAR MIDNIGHT.
LOW 12.
SUNDAY..SHOWERS ENDING IN THE MORNING THEN A MIX OF SUN AND CLOUD.
WIND BECOMING NORTHEAST 20 KM/H GUSTING TO 40 IN THE MORNING.
HIGH 21. UV INDEX 6 OR HIGH.
SIMCOE - DELHI - NORFOLK.
TODAY..CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS. WIND EAST 20 KM/H.
HIGH 20. UV INDEX 5 OR MODERATE.
TONIGHT..CLOUDY. 40 PERCENT CHANCE OF SHOWERS EARLY THIS EVENING.
SHOWERS BEGINNING THIS EVENING. LOW 11.
SUNDAY..SHOWERS ENDING IN THE MORNING THEN CLEARING. WIND BECOMING
NORTHEAST 20 KM/H GUSTING TO 40 IN THE MORNING. HIGH 21. UV INDEX 6
OR HIGH.
DUNNVILLE - CALEDONIA - HALDIMAND.
TODAY..MAINLY CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS. WIND EAST
20 KM/H. HIGH 20. UV INDEX 6 OR HIGH.
TONIGHT..CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS THIS EVENING AND
AFTER MIDNIGHT. SHOWERS BEGINNING OVERNIGHT. LOW 12.
SUNDAY..SHOWERS ENDING NEAR NOON THEN CLEARING. WIND BECOMING
NORTHEAST 20 KM/H GUSTING TO 40 IN THE MORNING. HIGH 21. UV INDEX 6
OR HIGH.
WOODSTOCK - TILLSONBURG - OXFORD COUNTY.
TODAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. WIND EAST 20 KM/H.
HIGH 19. UV INDEX 5 OR MODERATE.
TONIGHT..SHOWERS. LOW 11.
SUNDAY..SHOWERS ENDING IN THE MORNING THEN A MIX OF SUN AND CLOUD.
WIND BECOMING NORTHEAST 20 KM/H GUSTING TO 40 IN THE MORNING.
HIGH 21. UV INDEX 6 OR HIGH.
GODERICH - BLUEWATER - SOUTHERN HURON COUNTY.
TODAY..MAINLY CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. WIND
SOUTHEAST 20 KM/H GUSTING TO 40. HIGH 19. UV INDEX 5 OR MODERATE.
TONIGHT..MAINLY CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. WIND
SOUTHEAST 20 KM/H GUSTING TO 40 BECOMING LIGHT THIS EVENING. LOW 10.
SUNDAY..A MIX OF SUN AND CLOUD. 60 PERCENT CHANCE OF SHOWERS IN THE
MORNING. WIND BECOMING NORTHEAST 20 KM/H GUSTING TO 40 NEAR NOON.
HIGH 20. UV INDEX 6 OR HIGH.
STRATFORD - MITCHELL - SOUTHERN PERTH COUNTY.
TODAY..MAINLY CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. WIND
SOUTHEAST 20 KM/H GUSTING TO 40. HIGH 19. UV INDEX 5 OR MODERATE.
TONIGHT..MAINLY CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. WIND
SOUTHEAST 20 KM/H GUSTING TO 40 BECOMING LIGHT THIS EVENING. LOW 10.
SUNDAY..A MIX OF SUN AND CLOUD. 60 PERCENT CHANCE OF SHOWERS IN THE
MORNING. WIND BECOMING NORTHEAST 20 KM/H GUSTING TO 40 NEAR NOON.
HIGH 20. UV INDEX 6 OR HIGH.
REMAINDER UNCHANGED.
END
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