FPCN11 CWTO 141614 AAC UPDATED FORECASTS FOR SOUTHERN ONTARIO AND THE NATIONAL CAPITAL REGION ISSUED BY ENVIRONMENT CANADA AT 12:13 P.M. EDT TUESDAY 14 APRIL 2026 FOR TODAY AND WEDNESDAY. THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 3:30 P.M. EDT. SIMCOE - DELHI - NORFOLK. TODAY..MAINLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS LATE THIS AFTERNOON WITH RISK OF A THUNDERSTORM. WIND SOUTHWEST 40 KM/H GUSTING TO 60. HIGH 23. HUMIDEX 26. UV INDEX 6 OR HIGH. TONIGHT..CLOUDY. A FEW SHOWERS WITH THUNDERSTORMS BEGINNING LATE THIS EVENING. LOCAL AMOUNT 30 MM. WIND SOUTHWEST 20 KM/H BECOMING LIGHT LATE THIS EVENING. LOW 11 WITH TEMPERATURE RISING TO 15 BY MORNING. WEDNESDAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. RISK OF A THUNDERSTORM. WIND BECOMING SOUTHWEST 20 KM/H IN THE MORNING. HIGH 20. UV INDEX 6 OR HIGH. DUNNVILLE - CALEDONIA - HALDIMAND. TODAY..BECOMING A MIX OF SUN AND CLOUD THIS AFTERNOON WITH 40 PERCENT CHANCE OF SHOWERS LATE THIS AFTERNOON. RISK OF A THUNDERSTORM LATE THIS AFTERNOON. WIND SOUTHWEST 40 KM/H GUSTING TO 60. HIGH 21. HUMIDEX 26. UV INDEX 6 OR HIGH. TONIGHT..BECOMING CLOUDY THIS EVENING. SHOWERS WITH THUNDERSTORMS BEGINNING AFTER MIDNIGHT. LOCAL AMOUNT 30 MM. WIND SOUTHWEST 20 KM/H BECOMING LIGHT LATE THIS EVENING. LOW 12. WEDNESDAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. RISK OF A THUNDERSTORM. WIND BECOMING SOUTHWEST 20 KM/H GUSTING TO 40 IN THE MORNING. HIGH 20. HUMIDEX 25. UV INDEX 6 OR HIGH. WOODSTOCK - TILLSONBURG - OXFORD COUNTY. TODAY..BECOMING A MIX OF SUN AND CLOUD THIS AFTERNOON WITH 40 PERCENT CHANCE OF SHOWERS LATE THIS AFTERNOON. RISK OF A THUNDERSTORM LATE THIS AFTERNOON. WIND SOUTHWEST 40 KM/H GUSTING TO 60. HIGH 23. HUMIDEX 29. UV INDEX 6 OR HIGH. TONIGHT..BECOMING CLOUDY THIS EVENING WITH A FEW SHOWERS AND THUNDERSTORMS. LOCAL AMOUNT 30 MM. WIND SOUTHWEST 20 KM/H BECOMING LIGHT LATE THIS EVENING. LOW 14. WEDNESDAY..CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS. RISK OF A THUNDERSTORM. WIND BECOMING SOUTHWEST 20 KM/H IN THE MORNING. HIGH 20. HUMIDEX 25. UV INDEX 6 OR HIGH. BRANTFORD - COUNTY OF BRANT. TODAY..BECOMING A MIX OF SUN AND CLOUD THIS AFTERNOON WITH 40 PERCENT CHANCE OF SHOWERS LATE THIS AFTERNOON. RISK OF A THUNDERSTORM LATE THIS AFTERNOON. WIND SOUTHWEST 40 KM/H GUSTING TO 60. HIGH 22. HUMIDEX 28. UV INDEX 6 OR HIGH. TONIGHT..BECOMING CLOUDY LATE THIS EVENING WITH A FEW SHOWERS AND THUNDERSTORMS. LOCAL AMOUNT 30 MM. WIND SOUTHWEST 20 KM/H BECOMING LIGHT LATE THIS EVENING. LOW 14. WEDNESDAY..CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS. RISK OF A THUNDERSTORM. WIND BECOMING SOUTHWEST 20 KM/H IN THE MORNING. HIGH 20. HUMIDEX 25. UV INDEX 6 OR HIGH. NIAGARA FALLS - WELLAND - SOUTHERN NIAGARA REGION. TODAY..MAINLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS LATE THIS AFTERNOON WITH RISK OF A THUNDERSTORM. WIND SOUTHWEST 40 KM/H GUSTING TO 70. HIGH 21. UV INDEX 6 OR HIGH. TONIGHT..CLOUDY. SHOWERS WITH THUNDERSTORMS BEGINNING AFTER MIDNIGHT. LOCAL AMOUNT 30 MM. WIND SOUTHWEST 20 KM/H BECOMING LIGHT LATE THIS EVENING. LOW 13. WEDNESDAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. RISK OF A THUNDERSTORM. WIND BECOMING SOUTHWEST 20 KM/H GUSTING TO 40 IN THE MORNING. TEMPERATURE FALLING TO 8 IN THE AFTERNOON. UV INDEX 6 OR HIGH. ST. CATHARINES - GRIMSBY - NORTHERN NIAGARA REGION. TODAY..A MIX OF SUN AND CLOUD. 40 PERCENT CHANCE OF SHOWERS LATE THIS AFTERNOON WITH RISK OF A THUNDERSTORM. WIND SOUTHWEST 40 KM/H GUSTING TO 70. HIGH 21. HUMIDEX 26. UV INDEX 7 OR HIGH. TONIGHT..BECOMING CLOUDY LATE THIS EVENING. SHOWERS WITH THUNDERSTORMS BEGINNING AFTER MIDNIGHT. LOCAL AMOUNT 30 MM. WIND SOUTHWEST 20 KM/H BECOMING LIGHT LATE THIS EVENING. LOW 13. WEDNESDAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. RISK OF A THUNDERSTORM. WIND BECOMING SOUTHWEST 20 KM/H GUSTING TO 40 IN THE MORNING. HIGH 20. UV INDEX 5 OR MODERATE. CITY OF HAMILTON. TODAY..MAINLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS LATE THIS AFTERNOON WITH RISK OF A THUNDERSTORM. WIND SOUTHWEST 40 KM/H GUSTING TO 70. HIGH 21. UV INDEX 7 OR HIGH. TONIGHT..BECOMING CLOUDY LATE THIS EVENING. SHOWERS WITH THUNDERSTORMS BEGINNING AFTER MIDNIGHT. LOCAL AMOUNT 30 MM. WIND SOUTHWEST 20 KM/H BECOMING LIGHT LATE THIS EVENING. LOW 13. WEDNESDAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. RISK OF A THUNDERSTORM. WIND BECOMING SOUTHWEST 20 KM/H GUSTING TO 40 IN THE MORNING. HIGH 19. UV INDEX 6 OR HIGH. BURLINGTON - OAKVILLE. TODAY..CLEARING LATE THIS AFTERNOON. WIND SOUTHWEST 40 KM/H GUSTING TO 60. HIGH 21. HUMIDEX 25. UV INDEX 7 OR HIGH. TONIGHT..INCREASING CLOUDINESS. SHOWERS BEGINNING OVERNIGHT. RISK OF A THUNDERSTORM OVERNIGHT. LOCAL AMOUNT 10 TO 20 MM. WIND SOUTHWEST 20 KM/H GUSTING TO 40 BECOMING LIGHT THIS EVENING. LOW 12. WEDNESDAY..CLOUDY. 60 PERCENT CHANCE OF SHOWERS EARLY IN THE MORNING. 30 PERCENT CHANCE OF SHOWERS LATE IN THE AFTERNOON. RISK OF A THUNDERSTORM EARLY IN THE MORNING. WIND BECOMING SOUTHWEST 20 KM/H IN THE MORNING. HIGH 18. UV INDEX 5 OR MODERATE. KITCHENER - CAMBRIDGE - REGION OF WATERLOO. TODAY..MAINLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS LATE THIS AFTERNOON WITH RISK OF A THUNDERSTORM. WIND SOUTHWEST 40 KM/H GUSTING TO 60. HIGH 21. HUMIDEX 27. UV INDEX 5 OR MODERATE. TONIGHT..BECOMING CLOUDY LATE THIS EVENING WITH A FEW SHOWERS AND THUNDERSTORMS. LOCAL AMOUNT 30 MM. WIND SOUTHWEST 20 KM/H BECOMING LIGHT LATE THIS EVENING. LOW 11. WEDNESDAY..CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS. RISK OF A THUNDERSTORM. WIND BECOMING SOUTHWEST 20 KM/H IN THE MORNING. HIGH 21. HUMIDEX 26. UV INDEX 5 OR MODERATE. GUELPH - ERIN - SOUTHERN WELLINGTON COUNTY. TODAY..CLOUDY. BECOMING A MIX OF SUN AND CLOUD THIS AFTERNOON. WIND SOUTHWEST 40 KM/H GUSTING TO 60. HIGH 21. HUMIDEX 27. UV INDEX 5 OR MODERATE. TONIGHT..INCREASING CLOUDINESS. A FEW SHOWERS BEGINNING LATE THIS EVENING. RISK OF A THUNDERSTORM LATE THIS EVENING AND OVERNIGHT. LOCAL AMOUNT 10 TO 20 MM. WIND SOUTHWEST 20 KM/H BECOMING LIGHT LATE THIS EVENING. LOW 11. WEDNESDAY..CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS. RISK OF A THUNDERSTORM. WIND BECOMING SOUTHWEST 20 KM/H IN THE MORNING. HIGH 21. HUMIDEX 26. UV INDEX 5 OR MODERATE. REMAINDER UNCHANGED. END