420
FPCN12 CWTO 210915
FORECASTS FOR NORTHERN ONTARIO ISSUED BY ENVIRONMENT CANADA AT
5:30 A.M. EDT THURSDAY 21 MAY 2026 FOR TODAY AND FRIDAY.
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 11:30 A.M. EDT.
CITY OF THUNDER BAY.
TODAY..SUNNY. WIND BECOMING SOUTHEAST 20 KM/H LATE THIS MORNING.
HIGH 15. UV INDEX 6 OR HIGH.
TONIGHT..CLEAR. WIND EAST 20 KM/H BECOMING LIGHT LATE THIS EVENING.
LOW MINUS 1 WITH PATCHY FROST.
FRIDAY..SUNNY. HIGH 13.
KENORA - GRASSY NARROWS - WHITEDOG.
TODAY..MAINLY CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. WIND BECOMING
SOUTH 20 KM/H LATE THIS MORNING. HIGH 17. UV INDEX 5 OR MODERATE.
TONIGHT..CLEAR. LOW 9.
FRIDAY..SUNNY. BECOMING A MIX OF SUN AND CLOUD IN THE AFTERNOON.
HIGH 18.
SIOUX NARROWS - NESTOR FALLS - MORSON.
TODAY..MAINLY CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS THIS MORNING.
CLEARING THIS AFTERNOON. WIND BECOMING SOUTH 20 KM/H LATE THIS
MORNING. HIGH 19. UV INDEX 6 OR HIGH.
TONIGHT..CLEAR. LOW 9.
FRIDAY..SUNNY. BECOMING A MIX OF SUN AND CLOUD IN THE AFTERNOON.
HIGH 18.
DRYDEN - VERMILION BAY.
TODAY..A MIX OF SUN AND CLOUD WITH 40 PERCENT CHANCE OF SHOWERS THIS
MORNING. CLEARING THIS AFTERNOON. WIND BECOMING SOUTH 20 KM/H LATE
THIS AFTERNOON. HIGH 18. UV INDEX 6 OR HIGH.
TONIGHT..CLEAR. WIND SOUTH 20 KM/H BECOMING LIGHT THIS EVENING. LOW
PLUS 5.
FRIDAY..SUNNY. INCREASING CLOUDINESS IN THE AFTERNOON. HIGH 18.
IGNACE - ENGLISH RIVER.
TODAY..SUNNY. WIND BECOMING SOUTH 20 KM/H LATE THIS AFTERNOON.
HIGH 18. UV INDEX 6 OR HIGH.
TONIGHT..CLEAR. WIND SOUTH 20 KM/H BECOMING LIGHT THIS EVENING. LOW
PLUS 5.
FRIDAY..A MIX OF SUN AND CLOUD. HIGH 18.
FORT FRANCES - EMO - RAINY RIVER.
TODAY..SUNNY. HIGH 20. UV INDEX 6 OR HIGH.
TONIGHT..CLEAR. LOW PLUS 5.
FRIDAY..SUNNY. INCREASING CLOUDINESS IN THE AFTERNOON. HIGH 19.
SEINE RIVER VILLAGE - MINE CENTRE.
TODAY..SUNNY. HIGH 19. UV INDEX 6 OR HIGH.
TONIGHT..CLEAR. LOW PLUS 5.
FRIDAY..SUNNY. INCREASING CLOUDINESS IN THE AFTERNOON. HIGH 19.
ATIKOKAN - SHEBANDOWAN - QUETICO PARK.
TODAY..SUNNY. HIGH 18. UV INDEX 6 OR HIGH.
TONIGHT..CLEAR. LOW MINUS 1 WITH FROST.
FRIDAY..A MIX OF SUN AND CLOUD. HIGH 19.
UPSALA - RAITH.
TODAY..SUNNY. WIND UP TO 15 KM/H. HIGH 18. WIND CHILL MINUS 4 THIS
MORNING. UV INDEX 6 OR HIGH.
TONIGHT..CLEAR. LOW MINUS 1 WITH FROST.
FRIDAY..A MIX OF SUN AND CLOUD. HIGH 18.
CLOUD BAY - DORION.
TODAY..SUNNY. HIGH 15. UV INDEX 6 OR HIGH.
TONIGHT..CLEAR. LOW MINUS 1 WITH PATCHY FROST.
FRIDAY..SUNNY. WIND BECOMING EAST 20 KM/H LATE IN THE AFTERNOON.
HIGH 13.
KAKABEKA FALLS - WHITEFISH LAKE - ARROW LAKE.
TODAY..SUNNY. HIGH 17. UV INDEX 6 OR HIGH.
TONIGHT..CLEAR. WIND UP TO 15 KM/H. LOW MINUS 2 WITH FROST. WIND
CHILL MINUS 4 OVERNIGHT.
FRIDAY..SUNNY. WIND BECOMING EAST 20 KM/H LATE IN THE AFTERNOON.
HIGH 16.
RED LAKE - WOODLAND CARIBOU PARK.
TODAY..SHOWERS. HIGH 13. UV INDEX 2 OR LOW.
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS THIS
EVENING. CLEARING OVERNIGHT. LOW PLUS 5.
FRIDAY..SUNNY. HIGH 18.
EAR FALLS - PERRAULT FALLS - WESTERN LAC SEUL.
TODAY..MAINLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS THIS AFTERNOON.
HIGH 15. UV INDEX 5 OR MODERATE.
TONIGHT..MAINLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS EARLY THIS
EVENING. CLEARING THIS EVENING. LOW 6.
FRIDAY..SUNNY. HIGH 18.
SIOUX LOOKOUT - EASTERN LAC SEUL.
TODAY..CLEAR EARLY THIS MORNING THEN A MIX OF SUN AND CLOUD WITH
30 PERCENT CHANCE OF SHOWERS THIS AFTERNOON. HIGH 16. UV INDEX 6 OR
HIGH.
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS EARLY THIS
EVENING. CLEARING THIS EVENING. LOW PLUS 3.
FRIDAY..SUNNY. HIGH 18.
SAVANT LAKE - STURGEON LAKE.
TODAY..SUNNY. HIGH 16. UV INDEX 6 OR HIGH.
TONIGHT..CLEAR. LOW PLUS 3.
FRIDAY..SUNNY. HIGH 18.
GULL BAY - BLACK STURGEON LAKE.
TODAY..SUNNY. HIGH 17. UV INDEX 6 OR HIGH.
TONIGHT..CLEAR. LOW MINUS 1.
FRIDAY..SUNNY. WIND BECOMING SOUTHEAST 20 KM/H IN THE AFTERNOON.
HIGH 14.
BEARDMORE - JELLICOE - MACDIARMID.
TODAY..SUNNY. HIGH 17. UV INDEX 6 OR HIGH.
TONIGHT..CLEAR. LOW MINUS 1.
FRIDAY..SUNNY. WIND BECOMING SOUTHEAST 20 KM/H IN THE AFTERNOON.
HIGH 14.
ARMSTRONG - AUDEN - WABAKIMI PARK.
TODAY..SUNNY. WIND UP TO 15 KM/H. HIGH 16. WIND CHILL MINUS 4 THIS
MORNING. UV INDEX 6 OR HIGH.
TONIGHT..CLEAR. WIND UP TO 15 KM/H. LOW MINUS 2. WIND CHILL MINUS 4
OVERNIGHT.
FRIDAY..SUNNY. HIGH 18.
GERALDTON - LONGLAC - CARAMAT.
TODAY..MAINLY SUNNY. HIGH 15. UV INDEX 6 OR HIGH.
TONIGHT..A FEW CLOUDS. WIND UP TO 15 KM/H. LOW MINUS 3. WIND CHILL
MINUS 7 OVERNIGHT.
FRIDAY..SUNNY. WIND UP TO 15 KM/H. HIGH 17. WIND CHILL MINUS 4 IN THE
MORNING.
MANITOUWADGE - HORNEPAYNE.
TODAY..MAINLY SUNNY. WIND UP TO 15 KM/H. HIGH 16. WIND CHILL MINUS 7
THIS MORNING. UV INDEX 6 OR HIGH.
TONIGHT..A FEW CLOUDS. WIND UP TO 15 KM/H. LOW MINUS 3. WIND CHILL
MINUS 7 OVERNIGHT.
FRIDAY..SUNNY. WIND UP TO 15 KM/H. HIGH 18. WIND CHILL MINUS 4 IN THE
MORNING. UV INDEX 1 OR LOW.
NAKINA - AROLAND - PAGWA.
TODAY..MAINLY SUNNY. WIND UP TO 15 KM/H. HIGH 15. WIND CHILL MINUS 6
THIS MORNING. UV INDEX 6 OR HIGH.
TONIGHT..A FEW CLOUDS. WIND UP TO 15 KM/H. LOW MINUS 3. WIND CHILL
MINUS 7 OVERNIGHT.
FRIDAY..SUNNY. WIND UP TO 15 KM/H. HIGH 18. WIND CHILL MINUS 4 IN THE
MORNING.
NIPIGON - ROSSPORT.
TODAY..SUNNY. WIND UP TO 15 KM/H. HIGH 10. WIND CHILL MINUS 5 THIS
MORNING. UV INDEX 6 OR HIGH.
TONIGHT..CLEAR. WIND UP TO 15 KM/H. LOW MINUS 2 WITH FROST. WIND
CHILL MINUS 4 OVERNIGHT.
FRIDAY..SUNNY. HIGH 13.
MARATHON - SCHREIBER.
TODAY..SUNNY. WIND UP TO 15 KM/H. HIGH 10. WIND CHILL MINUS 7 THIS
MORNING. UV INDEX 6 OR HIGH.
TONIGHT..CLEAR. WIND UP TO 15 KM/H. LOW MINUS 3 WITH FROST. WIND
CHILL MINUS 5 OVERNIGHT.
FRIDAY..SUNNY. HIGH 13.
WAWA - PUKASKWA PARK.
TODAY..SUNNY. WIND UP TO 15 KM/H. HIGH 11. WIND CHILL MINUS 5 THIS
MORNING. UV INDEX 6 OR HIGH.
TONIGHT..CLEAR. LOW MINUS 1 WITH FROST.
FRIDAY..SUNNY. HIGH 18. UV INDEX 1 OR LOW.
WHITE RIVER - DUBREUILVILLE.
TODAY..SUNNY. WIND UP TO 15 KM/H. HIGH 11. WIND CHILL MINUS 5 THIS
MORNING. UV INDEX 6 OR HIGH.
TONIGHT..CLEAR. LOW MINUS 1 WITH FROST.
FRIDAY..SUNNY. HIGH 18.
SAULT STE. MARIE - ST. JOSEPH ISLAND.
TODAY..SUNNY. HIGH 16. UV INDEX 7 OR HIGH.
TONIGHT..CLEAR. LOW ZERO WITH PATCHY FROST.
FRIDAY..A MIX OF SUN AND CLOUD. CLEARING IN THE AFTERNOON. WIND
BECOMING SOUTHEAST 20 KM/H LATE IN THE MORNING. HIGH 17. UV INDEX 1
OR LOW.
SEARCHMONT - MONTREAL RIVER HARBOUR - BATCHAWANA BAY.
TODAY..SUNNY. WIND UP TO 15 KM/H. HIGH 11. WIND CHILL MINUS 5 THIS
MORNING. UV INDEX 6 OR HIGH.
TONIGHT..CLEAR. WIND UP TO 15 KM/H. LOW MINUS 2 WITH FROST. WIND
CHILL MINUS 4 OVERNIGHT.
FRIDAY..A MIX OF SUN AND CLOUD. CLEARING IN THE AFTERNOON. WIND
BECOMING SOUTHEAST 20 KM/H LATE IN THE MORNING. HIGH 16. UV INDEX 1
OR LOW.
AGAWA - LAKE SUPERIOR PARK.
TODAY..SUNNY. WIND UP TO 15 KM/H. HIGH 11. WIND CHILL MINUS 5 THIS
MORNING. UV INDEX 6 OR HIGH.
TONIGHT..CLEAR. WIND UP TO 15 KM/H. LOW MINUS 2 WITH FROST. WIND
CHILL MINUS 4 OVERNIGHT.
FRIDAY..A MIX OF SUN AND CLOUD. CLEARING IN THE AFTERNOON. WIND
BECOMING SOUTHEAST 20 KM/H LATE IN THE MORNING. HIGH 16. UV INDEX 1
OR LOW.
KAPUSKASING - HEARST - SMOOTH ROCK FALLS.
TODAY..MAINLY SUNNY. HIGH 17. UV INDEX 6 OR HIGH.
TONIGHT..A FEW CLOUDS. LOW MINUS 2.
FRIDAY..SUNNY. HIGH 19. UV INDEX 1 OR LOW.
FRASERDALE - PLEDGER LAKE.
TODAY..MAINLY SUNNY. HIGH 16. UV INDEX 6 OR HIGH.
TONIGHT..A FEW CLOUDS. LOW MINUS 2.
FRIDAY..SUNNY. HIGH 18. UV INDEX 1 OR LOW.
TIMMINS - COCHRANE - IROQUOIS FALLS.
TODAY..MAINLY SUNNY. WIND UP TO 15 KM/H. HIGH 16. WIND CHILL MINUS 7
THIS MORNING. UV INDEX 6 OR HIGH.
TONIGHT..A FEW CLOUDS. LOW MINUS 2.
FRIDAY..SUNNY. HIGH 19. UV INDEX 1 OR LOW.
LITTLE ABITIBI - KESAGAMI LAKE.
TODAY..MAINLY SUNNY. HIGH 15. UV INDEX 6 OR HIGH.
TONIGHT..A FEW CLOUDS. LOW MINUS 2.
FRIDAY..SUNNY. HIGH 18. UV INDEX 1 OR LOW.
GREATER SUDBURY AND VICINITY.
TODAY..SUNNY. WIND UP TO 15 KM/H. HIGH 15. WIND CHILL MINUS 8 THIS
MORNING. UV INDEX 7 OR HIGH.
TONIGHT..CLEAR. LOW PLUS 1 WITH PATCHY FROST.
FRIDAY..A MIX OF SUN AND CLOUD. HIGH 17. UV INDEX 1 OR LOW.
CHAPLEAU - MISSINAIBI LAKE.
TODAY..SUNNY. WIND UP TO 15 KM/H. HIGH 16. WIND CHILL MINUS 6 THIS
MORNING. UV INDEX 6 OR HIGH.
TONIGHT..CLEAR. WIND UP TO 15 KM/H. LOW MINUS 3 WITH FROST. WIND
CHILL MINUS 5 OVERNIGHT.
FRIDAY..A MIX OF SUN AND CLOUD. HIGH 18. UV INDEX 1 OR LOW.
GOGAMA - FOLEYET.
TODAY..SUNNY. WIND UP TO 15 KM/H. HIGH 14. WIND CHILL MINUS 6 THIS
MORNING. UV INDEX 6 OR HIGH.
TONIGHT..CLEAR. WIND UP TO 15 KM/H. LOW MINUS 3 WITH FROST. WIND
CHILL MINUS 5 OVERNIGHT.
FRIDAY..A MIX OF SUN AND CLOUD. HIGH 18. UV INDEX 1 OR LOW.
KIRKLAND LAKE - ENGLEHART.
TODAY..MAINLY SUNNY. WIND UP TO 15 KM/H. HIGH 14. WIND CHILL MINUS 9
THIS MORNING. UV INDEX 6 OR HIGH.
TONIGHT..CLEAR. WIND UP TO 15 KM/H. LOW MINUS 2 WITH FROST. WIND
CHILL MINUS 4 OVERNIGHT.
FRIDAY..MAINLY SUNNY. HIGH 18. UV INDEX 1 OR LOW.
TEMISKAMING SHORES - TEMAGAMI.
TODAY..MAINLY SUNNY. WIND UP TO 15 KM/H. HIGH 14. WIND CHILL MINUS 7
THIS MORNING. UV INDEX 6 OR HIGH.
TONIGHT..CLEAR. LOW MINUS 2 WITH FROST.
FRIDAY..MAINLY SUNNY. HIGH 18. UV INDEX 1 OR LOW.
ELLIOT LAKE - RANGER LAKE.
TODAY..SUNNY. WIND UP TO 15 KM/H. HIGH 14. WIND CHILL MINUS 7 THIS
MORNING. UV INDEX 7 OR HIGH.
TONIGHT..CLEAR. LOW PLUS 1 WITH PATCHY FROST.
FRIDAY..A MIX OF SUN AND CLOUD. HIGH 17. UV INDEX 1 OR LOW.
MANITOULIN ISLAND.
TODAY..SUNNY. HIGH 10. UV INDEX 7 OR HIGH.
TONIGHT..CLEAR. LOW PLUS 2 WITH RISK OF FROST.
FRIDAY..A MIX OF SUN AND CLOUD. WIND BECOMING EAST 20 KM/H LATE IN
THE AFTERNOON. HIGH 15. UV INDEX 1 OR LOW.
BLIND RIVER - THESSALON.
TODAY..SUNNY. HIGH 14. UV INDEX 7 OR HIGH.
TONIGHT..CLEAR. LOW PLUS 1 WITH PATCHY FROST.
FRIDAY..A MIX OF SUN AND CLOUD. WIND BECOMING EAST 20 KM/H LATE IN
THE AFTERNOON. HIGH 16. UV INDEX 1 OR LOW.
ESPANOLA - KILLARNEY.
TODAY..SUNNY. HIGH 12. UV INDEX 7 OR HIGH.
TONIGHT..CLEAR. LOW PLUS 2 WITH PATCHY FROST.
FRIDAY..A MIX OF SUN AND CLOUD. HIGH 16. UV INDEX 1 OR LOW.
NORTH BAY - POWASSAN - MATTAWA.
TODAY..SUNNY. HIGH 14. UV INDEX 7 OR HIGH.
TONIGHT..CLEAR. LOW PLUS 2 WITH PATCHY FROST.
FRIDAY..A MIX OF SUN AND CLOUD. HIGH 17. UV INDEX 1 OR LOW.
WEST NIPISSING - FRENCH RIVER.
TODAY..SUNNY. HIGH 14. UV INDEX 7 OR HIGH.
TONIGHT..CLEAR. LOW PLUS 2 WITH PATCHY FROST.
FRIDAY..A MIX OF SUN AND CLOUD. HIGH 17. UV INDEX 1 OR LOW.
END
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