FPCN11 CWTO 210932 AAA UPDATED FORECASTS FOR SOUTHERN ONTARIO AND THE NATIONAL CAPITAL REGION ISSUED BY ENVIRONMENT CANADA AT 5:32 A.M. EDT TUESDAY 21 APRIL 2026 FOR TODAY AND WEDNESDAY. THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 11:00 A.M. EDT. NEWMARKET - GEORGINA - NORTHERN YORK REGION. TODAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF FLURRIES EARLY THIS MORNING. WIND BECOMING SOUTH 20 KM/H GUSTING TO 40 THIS MORNING. HIGH 10. WIND CHILL MINUS 10 THIS MORNING. UV INDEX 6 OR HIGH. TONIGHT..A FEW CLOUDS. WIND SOUTH 20 KM/H BECOMING LIGHT THIS EVENING. LOW PLUS 2. WEDNESDAY..A MIX OF SUN AND CLOUD. CLEARING EARLY IN THE AFTERNOON. HIGH 15. UV INDEX 6 OR HIGH. WINGHAM - BLYTH - NORTHERN HURON COUNTY. TODAY..MAINLY CLOUDY WITH 30 PERCENT CHANCE OF FLURRIES EARLY THIS MORNING. CLEARING THIS MORNING. WIND BECOMING SOUTH 30 KM/H GUSTING TO 50 THIS MORNING. HIGH 13. UV INDEX 6 OR HIGH. TONIGHT..CLEAR. BECOMING PARTLY CLOUDY THIS EVENING. WIND SOUTHWEST 20 KM/H BECOMING LIGHT THIS EVENING. LOW PLUS 5. WEDNESDAY..SUNNY. HIGH 13. UV INDEX 6 OR HIGH. MOUNT FOREST - ARTHUR - NORTHERN WELLINGTON COUNTY. TODAY..MAINLY CLOUDY. 30 PERCENT CHANCE OF FLURRIES EARLY THIS MORNING. CLEARING THIS AFTERNOON. WIND BECOMING SOUTH 30 KM/H GUSTING TO 50 THIS MORNING. HIGH 11. UV INDEX 6 OR HIGH. TONIGHT..CLEAR. WIND SOUTH 20 KM/H BECOMING LIGHT THIS EVENING. LOW PLUS 2. WEDNESDAY..A MIX OF SUN AND CLOUD. HIGH 16. UV INDEX 7 OR HIGH. ORANGEVILLE - GRAND VALLEY - SOUTHERN DUFFERIN COUNTY. TODAY..MAINLY CLOUDY. 30 PERCENT CHANCE OF FLURRIES EARLY THIS MORNING. CLEARING THIS AFTERNOON. WIND BECOMING SOUTH 30 KM/H GUSTING TO 50 THIS MORNING. HIGH 12. WIND CHILL MINUS 7 THIS MORNING. UV INDEX 6 OR HIGH. TONIGHT..CLEAR. WIND SOUTH 20 KM/H BECOMING LIGHT THIS EVENING. LOW PLUS 4. WEDNESDAY..A MIX OF SUN AND CLOUD. HIGH 16. UV INDEX 6 OR HIGH. SHELBURNE - MANSFIELD - NORTHERN DUFFERIN COUNTY. TODAY..MAINLY CLOUDY WITH 30 PERCENT CHANCE OF FLURRIES EARLY THIS MORNING. CLEARING THIS MORNING. WIND BECOMING SOUTH 30 KM/H GUSTING TO 50 THIS MORNING. HIGH 12. WIND CHILL MINUS 9 THIS MORNING. UV INDEX 6 OR HIGH. TONIGHT..CLEAR. BECOMING PARTLY CLOUDY THIS EVENING. WIND SOUTHWEST 20 KM/H BECOMING LIGHT THIS EVENING. LOW PLUS 4. WEDNESDAY..SUNNY. HIGH 15. UV INDEX 6 OR HIGH. INNISFIL - NEW TECUMSETH - ANGUS. TODAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF FLURRIES EARLY THIS MORNING. WIND BECOMING SOUTH 20 KM/H GUSTING TO 40 THIS MORNING. HIGH 12. WIND CHILL MINUS 10 THIS MORNING. UV INDEX 6 OR HIGH. TONIGHT..A FEW CLOUDS. WIND SOUTH 20 KM/H BECOMING LIGHT THIS EVENING. LOW ZERO. WEDNESDAY..A MIX OF SUN AND CLOUD. CLEARING EARLY IN THE AFTERNOON. HIGH 15. UV INDEX 6 OR HIGH. SAUGEEN SHORES - KINCARDINE - SOUTHERN BRUCE COUNTY. TODAY..MAINLY CLOUDY WITH 30 PERCENT CHANCE OF FLURRIES EARLY THIS MORNING. CLEARING THIS MORNING. WIND BECOMING SOUTH 30 KM/H GUSTING TO 50 THIS MORNING. HIGH 11. UV INDEX 6 OR HIGH. TONIGHT..CLEAR. BECOMING PARTLY CLOUDY THIS EVENING. WIND SOUTHWEST 20 KM/H BECOMING LIGHT THIS EVENING. LOW PLUS 3. WEDNESDAY..SUNNY. HIGH 12. UV INDEX 6 OR HIGH. BRUCE PENINSULA - SAUBLE BEACH - TOBERMORY. TODAY..MAINLY CLOUDY WITH 30 PERCENT CHANCE OF FLURRIES EARLY THIS MORNING. CLEARING THIS MORNING. WIND SOUTH 30 KM/H GUSTING TO 50. HIGH 8. UV INDEX 6 OR HIGH. TONIGHT..CLEAR. BECOMING PARTLY CLOUDY THIS EVENING. WIND SOUTHWEST 20 KM/H BECOMING LIGHT THIS EVENING. LOW PLUS 1. WEDNESDAY..SUNNY. HIGH 8. UV INDEX 6 OR HIGH. HANOVER - DUNDALK - SOUTHERN GREY COUNTY. TODAY..MAINLY CLOUDY WITH 30 PERCENT CHANCE OF FLURRIES EARLY THIS MORNING. CLEARING THIS MORNING. WIND BECOMING SOUTH 30 KM/H GUSTING TO 50 THIS MORNING. HIGH 12. WIND CHILL MINUS 8 THIS MORNING. UV INDEX 6 OR HIGH. TONIGHT..CLEAR. BECOMING PARTLY CLOUDY THIS EVENING. WIND SOUTHWEST 20 KM/H BECOMING LIGHT THIS EVENING. LOW PLUS 3. WEDNESDAY..SUNNY. HIGH 16. UV INDEX 6 OR HIGH. OWEN SOUND - BLUE MOUNTAINS - NORTHERN GREY COUNTY. TODAY..MAINLY CLOUDY WITH 30 PERCENT CHANCE OF FLURRIES EARLY THIS MORNING. CLEARING THIS MORNING. WIND SOUTH 30 KM/H GUSTING TO 50. HIGH 12. UV INDEX 6 OR HIGH. TONIGHT..CLEAR. BECOMING PARTLY CLOUDY THIS EVENING. WIND SOUTHWEST 20 KM/H BECOMING LIGHT THIS EVENING. LOW PLUS 3. WEDNESDAY..SUNNY. HIGH 14. UV INDEX 6 OR HIGH. BARRIE - COLLINGWOOD - HILLSDALE. TODAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF FLURRIES EARLY THIS MORNING. WIND BECOMING SOUTH 20 KM/H GUSTING TO 40 THIS MORNING. HIGH 9. WIND CHILL MINUS 7 THIS MORNING. UV INDEX 6 OR HIGH. TONIGHT..CLEAR. INCREASING CLOUDINESS AFTER MIDNIGHT. LOW ZERO. WEDNESDAY..MAINLY CLOUDY. CLEARING IN THE AFTERNOON. HIGH 14. UV INDEX 6 OR HIGH. MIDLAND - COLDWATER - ORR LAKE. TODAY..MAINLY CLOUDY WITH 30 PERCENT CHANCE OF FLURRIES EARLY THIS MORNING. CLEARING THIS MORNING. WIND BECOMING SOUTH 20 KM/H GUSTING TO 40 THIS MORNING. HIGH 9. WIND CHILL MINUS 7 THIS MORNING. UV INDEX 6 OR HIGH. TONIGHT..CLEAR. INCREASING CLOUDINESS AFTER MIDNIGHT. LOW ZERO. WEDNESDAY..MAINLY CLOUDY. CLEARING IN THE AFTERNOON. HIGH 12. UV INDEX 6 OR HIGH. ORILLIA - LAGOON CITY - WASHAGO. TODAY..INCREASING CLOUDINESS EARLY THIS MORNING. WIND BECOMING SOUTH 20 KM/H GUSTING TO 40 THIS MORNING. HIGH 9. WIND CHILL MINUS 7 THIS MORNING. UV INDEX 6 OR HIGH. TONIGHT..CLEAR. INCREASING CLOUDINESS AFTER MIDNIGHT. LOW ZERO. WEDNESDAY..MAINLY CLOUDY. CLEARING IN THE AFTERNOON. HIGH 15. UV INDEX 6 OR HIGH. REMAINDER UNCHANGED. END