FPCN11 CWTO 231203 AAA UPDATED FORECASTS FOR SOUTHERN ONTARIO AND THE NATIONAL CAPITAL REGION ISSUED BY ENVIRONMENT CANADA AT 8:03 A.M. EDT SUNDAY 23 AUGUST 2026 FOR TODAY AND MONDAY. THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 11:00 A.M. EDT. WOODSTOCK - TILLSONBURG - OXFORD COUNTY. TODAY..A FEW SHOWERS ENDING NEAR NOON THEN MAINLY CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS. RISK OF A THUNDERSTORM THIS MORNING. LOCAL AMOUNT 10 TO 15 MM. WIND BECOMING WEST 20 KM/H GUSTING TO 40 LATE THIS MORNING. HIGH 21. HUMIDEX 26. UV INDEX 6 OR HIGH. TONIGHT..CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS. WIND WEST 30 KM/H GUSTING TO 50 BECOMING LIGHT LATE THIS EVENING. WIND BECOMING WEST 20 BEFORE MORNING. LOW 13. MONDAY..CLOUDY WITH 70 PERCENT CHANCE OF SHOWERS. WIND WEST 30 KM/H. HIGH 20. HUMIDEX 25. UV INDEX 3 OR MODERATE. GODERICH - BLUEWATER - SOUTHERN HURON COUNTY. TODAY..SHOWERS WITH RISK OF A THUNDERSTORM. LOCAL AMOUNT 20 TO 30 MM. WIND NORTHWEST 30 KM/H GUSTING TO 50. HIGH 19. UV INDEX 2 OR LOW. TONIGHT..SHOWERS WITH RISK OF A THUNDERSTORM. LOCAL AMOUNT 5 MM. WIND NORTHWEST 30 KM/H GUSTING TO 50. LOW 13. MONDAY..SHOWERS. LOCAL AMOUNT 5 MM. WIND NORTHWEST 40 KM/H GUSTING TO 60. HIGH 18. UV INDEX 3 OR MODERATE. STRATFORD - MITCHELL - SOUTHERN PERTH COUNTY. TODAY..SHOWERS WITH RISK OF A THUNDERSTORM. LOCAL AMOUNT 15 TO 25 MM. WIND WEST 30 KM/H GUSTING TO 50. HIGH 19. UV INDEX 3 OR MODERATE. TONIGHT..SHOWERS WITH RISK OF A THUNDERSTORM. LOCAL AMOUNT 5 MM. WIND WEST 20 KM/H GUSTING TO 40 BECOMING LIGHT THIS EVENING. WIND BECOMING WEST 20 BEFORE MORNING. LOW 13. MONDAY..SHOWERS. LOCAL AMOUNT 5 MM. WIND WEST 30 KM/H. HIGH 18. UV INDEX 3 OR MODERATE. REMAINDER UNCHANGED. END