FPCN11 CWTO 120700 AAC UPDATED FORECASTS FOR SOUTHERN ONTARIO AND THE NATIONAL CAPITAL REGION ISSUED BY ENVIRONMENT CANADA AT 2:59 A.M. EDT FRIDAY 12 JUNE 2026 FOR TONIGHT FRIDAY AND FRIDAY NIGHT. THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 5:00 A.M. EDT. RODNEY - SHEDDEN - WESTERN ELGIN COUNTY. TONIGHT..SHOWERS WITH RISK OF A THUNDERSTORM. WIND WEST 30 KM/H GUSTING TO 60. LOW 20. FRIDAY..CLOUDY. BECOMING A MIX OF SUN AND CLOUD IN THE MORNING. WIND WEST 40 KM/H GUSTING TO 60 BECOMING NORTHWEST 20 GUSTING TO 40 LATE IN THE MORNING. HIGH 24. HUMIDEX 29. UV INDEX 9 OR VERY HIGH. FRIDAY NIGHT..CLEAR. WIND WEST 30 KM/H BECOMING LIGHT IN THE EVENING. WIND BECOMING WEST 20 BEFORE MORNING. LOW 17. ST. THOMAS - AYLMER - EASTERN ELGIN COUNTY. TONIGHT..SHOWERS WITH RISK OF A THUNDERSTORM. WIND BECOMING WEST 20 KM/H GUSTING TO 40 BEFORE MORNING. LOW 21. FRIDAY..A FEW SHOWERS ENDING IN THE MORNING THEN MAINLY CLOUDY. RISK OF A THUNDERSTORM EARLY IN THE MORNING. WIND WEST 30 KM/H GUSTING TO 50. HIGH 26. HUMIDEX 31. UV INDEX 8 OR VERY HIGH. FRIDAY NIGHT..CLEAR. WIND SOUTHWEST 20 KM/H. LOW 17. STRATHROY - KOMOKA - WESTERN MIDDLESEX COUNTY. TONIGHT..SHOWERS WITH RISK OF A THUNDERSTORM. WIND WEST 30 KM/H GUSTING TO 60. LOW 19. FRIDAY..CLOUDY. BECOMING A MIX OF SUN AND CLOUD NEAR NOON. WIND WEST 30 KM/H GUSTING TO 60. HIGH 26. HUMIDEX 30. UV INDEX 9 OR VERY HIGH. FRIDAY NIGHT..CLEAR. WIND WEST 20 KM/H. LOW 17. LONDON - PARKHILL - EASTERN MIDDLESEX COUNTY. TONIGHT..SHOWERS WITH RISK OF A THUNDERSTORM. WIND WEST 30 KM/H GUSTING TO 50. LOW 19. FRIDAY..CLOUDY. BECOMING A MIX OF SUN AND CLOUD NEAR NOON. WIND WEST 30 KM/H GUSTING TO 50. HIGH 25. HUMIDEX 29. UV INDEX 8 OR VERY HIGH. FRIDAY NIGHT..CLEAR. WIND NORTHWEST 20 KM/H BECOMING LIGHT IN THE EVENING. LOW 16. SIMCOE - DELHI - NORFOLK. TONIGHT..SHOWERS WITH RISK OF A THUNDERSTORM. WIND SOUTHWEST 30 KM/H GUSTING TO 50. LOW 19. FRIDAY..A FEW SHOWERS ENDING IN THE MORNING THEN A MIX OF SUN AND CLOUD. RISK OF A THUNDERSTORM EARLY IN THE MORNING. WIND WEST 30 KM/H GUSTING TO 50. HIGH 25. HUMIDEX 29. UV INDEX 8 OR VERY HIGH. FRIDAY NIGHT..CLEAR. WIND SOUTHWEST 20 KM/H BECOMING LIGHT IN THE EVENING. LOW 16. DUNNVILLE - CALEDONIA - HALDIMAND. TONIGHT..PARTLY CLOUDY. A FEW SHOWERS BEGINNING OVERNIGHT. RISK OF A THUNDERSTORM. WIND SOUTHWEST 20 KM/H GUSTING TO 40. LOW 20. FRIDAY..A FEW SHOWERS ENDING IN THE MORNING THEN A MIX OF SUN AND CLOUD. RISK OF A THUNDERSTORM IN THE MORNING. WIND WEST 20 KM/H GUSTING TO 40. HIGH 25. HUMIDEX 30. UV INDEX 9 OR VERY HIGH. FRIDAY NIGHT..CLEAR. WIND WEST 20 KM/H GUSTING TO 40 BECOMING LIGHT IN THE EVENING. LOW 18. WOODSTOCK - TILLSONBURG - OXFORD COUNTY. TONIGHT..SHOWERS WITH RISK OF A THUNDERSTORM. WIND SOUTHWEST 30 KM/H GUSTING TO 50. LOW 19. FRIDAY..A FEW SHOWERS ENDING IN THE MORNING THEN A MIX OF SUN AND CLOUD. RISK OF A THUNDERSTORM EARLY IN THE MORNING. WIND WEST 30 KM/H GUSTING TO 50. HIGH 25. HUMIDEX 29. UV INDEX 8 OR VERY HIGH. FRIDAY NIGHT..CLEAR. WIND WEST 20 KM/H GUSTING TO 40 BECOMING LIGHT IN THE EVENING. WIND BECOMING WEST 20 BEFORE MORNING. LOW 17. BRANTFORD - COUNTY OF BRANT. TONIGHT..SHOWERS WITH RISK OF A THUNDERSTORM. WIND SOUTHWEST 20 KM/H. LOW 19. FRIDAY..A FEW SHOWERS ENDING IN THE MORNING THEN A MIX OF SUN AND CLOUD. RISK OF A THUNDERSTORM EARLY IN THE MORNING. WIND WEST 30 KM/H GUSTING TO 50. HIGH 25. HUMIDEX 29. UV INDEX 8 OR VERY HIGH. FRIDAY NIGHT..CLEAR. WIND WEST 20 KM/H GUSTING TO 40 BECOMING LIGHT IN THE EVENING. WIND BECOMING WEST 20 BEFORE MORNING. LOW 17. GODERICH - BLUEWATER - SOUTHERN HURON COUNTY. TONIGHT..SHOWERS WITH RISK OF A THUNDERSTORM. WIND SOUTHWEST 30 KM/H GUSTING TO 60. LOW 18. FRIDAY..CLOUDY. BECOMING A MIX OF SUN AND CLOUD IN THE MORNING. WIND SOUTHWEST 30 KM/H GUSTING TO 60 BECOMING NORTHWEST 30 GUSTING TO 50 IN THE MORNING THEN LIGHT IN THE AFTERNOON. HIGH 24. HUMIDEX 29. UV INDEX 9 OR VERY HIGH. FRIDAY NIGHT..CLEAR. WIND BECOMING SOUTHWEST 20 KM/H NEAR MIDNIGHT. LOW 15. WINGHAM - BLYTH - NORTHERN HURON COUNTY. TONIGHT..SHOWERS WITH RISK OF A THUNDERSTORM. WIND SOUTHWEST 30 KM/H GUSTING TO 60. LOW 18. FRIDAY..CLOUDY. BECOMING A MIX OF SUN AND CLOUD IN THE AFTERNOON. WIND SOUTHWEST 30 KM/H GUSTING TO 60 BECOMING NORTHWEST 30 GUSTING TO 50 IN THE MORNING. HIGH 24. HUMIDEX 29. UV INDEX 8 OR VERY HIGH. FRIDAY NIGHT..A FEW CLOUDS. WIND WEST 20 KM/H GUSTING TO 40 BECOMING LIGHT NEAR MIDNIGHT. LOW 15. STRATFORD - MITCHELL - SOUTHERN PERTH COUNTY. TONIGHT..SHOWERS WITH RISK OF A THUNDERSTORM. WIND SOUTHWEST 30 KM/H GUSTING TO 60. LOW 18. FRIDAY..CLOUDY. BECOMING A MIX OF SUN AND CLOUD IN THE AFTERNOON. WIND WEST 30 KM/H GUSTING TO 60. HIGH 24. HUMIDEX 29. UV INDEX 7 OR HIGH. FRIDAY NIGHT..CLEAR. WIND WEST 20 KM/H GUSTING TO 40 BECOMING LIGHT IN THE EVENING. LOW 15. LISTOWEL - MILVERTON - NORTHERN PERTH COUNTY. TONIGHT..SHOWERS WITH RISK OF A THUNDERSTORM. WIND WEST 30 KM/H GUSTING TO 60. LOW 18. FRIDAY..CLOUDY. WIND WEST 30 KM/H GUSTING TO 60. HIGH 24. HUMIDEX 29. UV INDEX 6 OR HIGH. FRIDAY NIGHT..A FEW CLOUDS. WIND WEST 20 KM/H GUSTING TO 40 BECOMING LIGHT IN THE EVENING. LOW 15. KITCHENER - CAMBRIDGE - REGION OF WATERLOO. TONIGHT..SHOWERS WITH RISK OF A THUNDERSTORM. WIND WEST 30 KM/H GUSTING TO 50. LOW 19. FRIDAY..A FEW SHOWERS ENDING IN THE MORNING THEN CLOUDY. WIND WEST 30 KM/H GUSTING TO 50. HIGH 24. HUMIDEX 27. UV INDEX 6 OR HIGH. FRIDAY NIGHT..CLEAR. WIND WEST 30 KM/H GUSTING TO 50 BECOMING LIGHT NEAR MIDNIGHT. LOW 15. GUELPH - ERIN - SOUTHERN WELLINGTON COUNTY. TONIGHT..SHOWERS WITH RISK OF A THUNDERSTORM. WIND WEST 30 KM/H GUSTING TO 50. LOW 19. FRIDAY..A FEW SHOWERS ENDING IN THE MORNING THEN CLOUDY. RISK OF A THUNDERSTORM EARLY IN THE MORNING. WIND WEST 30 KM/H GUSTING TO 50. HIGH 24. HUMIDEX 27. UV INDEX 8 OR VERY HIGH. FRIDAY NIGHT..CLEAR. WIND WEST 30 KM/H GUSTING TO 50 BECOMING LIGHT NEAR MIDNIGHT. LOW 15. MOUNT FOREST - ARTHUR - NORTHERN WELLINGTON COUNTY. TONIGHT..SHOWERS WITH RISK OF A THUNDERSTORM. WIND SOUTHWEST 30 KM/H GUSTING TO 60. LOW 18. FRIDAY..A FEW SHOWERS ENDING IN THE MORNING THEN CLOUDY. RISK OF A THUNDERSTORM EARLY IN THE MORNING. WIND WEST 30 KM/H GUSTING TO 50. HIGH 24. HUMIDEX 27. UV INDEX 6 OR HIGH. FRIDAY NIGHT..A FEW CLOUDS. WIND WEST 20 KM/H GUSTING TO 40 BECOMING LIGHT IN THE EVENING. LOW 15. SAUGEEN SHORES - KINCARDINE - SOUTHERN BRUCE COUNTY. TONIGHT..SHOWERS WITH RISK OF A THUNDERSTORM. WIND SOUTHWEST 30 KM/H GUSTING TO 60. LOW 15. FRIDAY..CLOUDY. BECOMING A MIX OF SUN AND CLOUD NEAR NOON. WIND SOUTHWEST 30 KM/H GUSTING TO 60 BECOMING NORTHWEST 20 GUSTING TO 40 IN THE MORNING. HIGH 20. UV INDEX 9 OR VERY HIGH. FRIDAY NIGHT..A FEW CLOUDS. WIND SOUTHWEST 20 KM/H BECOMING LIGHT NEAR MIDNIGHT. LOW 13. HANOVER - DUNDALK - SOUTHERN GREY COUNTY. TONIGHT..SHOWERS WITH RISK OF A THUNDERSTORM. WIND SOUTHWEST 30 KM/H GUSTING TO 60. LOW 17. FRIDAY..A FEW SHOWERS ENDING IN THE MORNING THEN CLOUDY. RISK OF A THUNDERSTORM EARLY IN THE MORNING. WIND SOUTHWEST 30 KM/H GUSTING TO 60. HIGH 24. HUMIDEX 27. UV INDEX 6 OR HIGH. FRIDAY NIGHT..PARTLY CLOUDY. WIND WEST 20 KM/H GUSTING TO 40 BECOMING LIGHT IN THE EVENING. LOW 16. REMAINDER UNCHANGED. END