453
FPCN12 CWTO 181515
FORECASTS FOR NORTHERN ONTARIO ISSUED BY ENVIRONMENT CANADA AT
11:30 A.M. EDT FRIDAY 18 SEPTEMBER 2026 FOR TODAY AND SATURDAY.
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 4:00 P.M. EDT.
CITY OF THUNDER BAY.
TODAY..SUNNY. HIGH 15. UV INDEX 5 OR MODERATE.
TONIGHT..A FEW CLOUDS. LOW PLUS 4 WITH RISK OF FROST.
SATURDAY..MAINLY SUNNY. HIGH 19. UV INDEX 5 OR MODERATE.
KENORA - GRASSY NARROWS - WHITEDOG.
TODAY..SUNNY. BECOMING A MIX OF SUN AND CLOUD THIS AFTERNOON. WIND
SOUTH 20 KM/H. HIGH 18. UV INDEX 4 OR MODERATE.
TONIGHT..PARTLY CLOUDY. SHOWERS BEGINNING AFTER MIDNIGHT. WIND SOUTH
20 KM/H BECOMING LIGHT THIS EVENING. LOW 12.
SATURDAY..SHOWERS ENDING NEAR NOON THEN MAINLY CLOUDY WITH 40 PERCENT
CHANCE OF SHOWERS. HIGH 18. UV INDEX 4 OR MODERATE.
SIOUX NARROWS - NESTOR FALLS - MORSON.
TODAY..SUNNY. BECOMING A MIX OF SUN AND CLOUD THIS AFTERNOON. WIND
SOUTH 20 KM/H. HIGH 18. UV INDEX 4 OR MODERATE.
TONIGHT..PARTLY CLOUDY. SHOWERS BEGINNING AFTER MIDNIGHT. WIND SOUTH
20 KM/H BECOMING LIGHT THIS EVENING. LOW 12.
SATURDAY..SHOWERS ENDING NEAR NOON THEN MAINLY CLOUDY WITH 40 PERCENT
CHANCE OF SHOWERS. HIGH 18. UV INDEX 4 OR MODERATE.
DRYDEN - VERMILION BAY.
TODAY..SUNNY. WIND SOUTH 20 KM/H. HIGH 18. UV INDEX 4 OR MODERATE.
TONIGHT..PARTLY CLOUDY. SHOWERS BEGINNING AFTER MIDNIGHT. WIND SOUTH
20 KM/H BECOMING LIGHT THIS EVENING. LOW 9.
SATURDAY..SHOWERS ENDING NEAR NOON THEN MAINLY CLOUDY WITH 40 PERCENT
CHANCE OF SHOWERS. HIGH 16. UV INDEX 4 OR MODERATE.
IGNACE - ENGLISH RIVER.
TODAY..SUNNY. WIND BECOMING SOUTH 20 KM/H THIS AFTERNOON. HIGH 17. UV
INDEX 4 OR MODERATE.
TONIGHT..CLEAR. BECOMING PARTLY CLOUDY THIS EVENING. WIND SOUTH
20 KM/H. LOW 9.
SATURDAY..MAINLY CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. HIGH 16.
UV INDEX 4 OR MODERATE.
FORT FRANCES - EMO - RAINY RIVER.
TODAY..A MIX OF SUN AND CLOUD. WIND SOUTH 20 KM/H. HIGH 20. UV
INDEX 5 OR MODERATE.
TONIGHT..A FEW CLOUDS. WIND SOUTH 20 KM/H BECOMING LIGHT THIS
EVENING. LOW 6.
SATURDAY..A MIX OF SUN AND CLOUD WITH 60 PERCENT CHANCE OF SHOWERS.
HIGH 19. UV INDEX 5 OR MODERATE.
SEINE RIVER VILLAGE - MINE CENTRE.
TODAY..SUNNY. WIND BECOMING SOUTH 20 KM/H THIS AFTERNOON. HIGH 19. UV
INDEX 5 OR MODERATE.
TONIGHT..A FEW CLOUDS. WIND SOUTH 20 KM/H BECOMING LIGHT THIS
EVENING. LOW 6.
SATURDAY..A MIX OF SUN AND CLOUD WITH 60 PERCENT CHANCE OF SHOWERS.
HIGH 19. UV INDEX 5 OR MODERATE.
ATIKOKAN - SHEBANDOWAN - QUETICO PARK.
TODAY..SUNNY. WIND BECOMING SOUTH 20 KM/H THIS AFTERNOON. HIGH 18. UV
INDEX 5 OR MODERATE.
TONIGHT..CLEAR. WIND SOUTH 20 KM/H BECOMING LIGHT THIS EVENING. LOW
PLUS 5.
SATURDAY..SUNNY EARLY IN THE MORNING THEN A MIX OF SUN AND CLOUD WITH
40 PERCENT CHANCE OF SHOWERS IN THE AFTERNOON. HIGH 19. UV INDEX 5
OR MODERATE.
UPSALA - RAITH.
TODAY..SUNNY. WIND BECOMING SOUTH 20 KM/H THIS AFTERNOON. HIGH 17. UV
INDEX 5 OR MODERATE.
TONIGHT..CLEAR. WIND SOUTH 20 KM/H BECOMING LIGHT THIS EVENING. LOW
PLUS 5.
SATURDAY..SUNNY EARLY IN THE MORNING THEN A MIX OF SUN AND CLOUD WITH
40 PERCENT CHANCE OF SHOWERS IN THE AFTERNOON. HIGH 18. UV INDEX 5
OR MODERATE.
CLOUD BAY - DORION.
TODAY..MAINLY SUNNY. HIGH 15. UV INDEX 5 OR MODERATE.
TONIGHT..A FEW CLOUDS. LOW PLUS 4 WITH RISK OF FROST.
SATURDAY..MAINLY SUNNY. HIGH 19. UV INDEX 5 OR MODERATE.
KAKABEKA FALLS - WHITEFISH LAKE - ARROW LAKE.
TODAY..SUNNY. HIGH 15. UV INDEX 5 OR MODERATE.
TONIGHT..A FEW CLOUDS. LOW PLUS 4 WITH RISK OF FROST.
SATURDAY..MAINLY SUNNY. HIGH 20. UV INDEX 5 OR MODERATE.
RED LAKE - WOODLAND CARIBOU PARK.
TODAY..SUNNY. WIND SOUTH 20 KM/H. HIGH 17. UV INDEX 4 OR MODERATE.
TONIGHT..MAINLY CLOUDY. A FEW SHOWERS BEGINNING LATE THIS EVENING.
WIND SOUTH 20 KM/H BECOMING LIGHT THIS EVENING. LOW 12.
SATURDAY..A FEW SHOWERS ENDING NEAR NOON THEN CLEARING. HIGH 18. UV
INDEX 3 OR MODERATE.
EAR FALLS - PERRAULT FALLS - WESTERN LAC SEUL.
TODAY..SUNNY. WIND SOUTH 20 KM/H. HIGH 17. UV INDEX 4 OR MODERATE.
TONIGHT..MAINLY CLOUDY. A FEW SHOWERS BEGINNING LATE THIS EVENING.
WIND SOUTH 20 KM/H BECOMING LIGHT THIS EVENING. LOW 12.
SATURDAY..A FEW SHOWERS ENDING NEAR NOON THEN CLEARING. HIGH 18. UV
INDEX 3 OR MODERATE.
SIOUX LOOKOUT - EASTERN LAC SEUL.
TODAY..SUNNY. WIND BECOMING SOUTH 20 KM/H THIS AFTERNOON. HIGH 17. UV
INDEX 4 OR MODERATE.
TONIGHT..CLEAR EARLY THIS EVENING THEN PARTLY CLOUDY WITH SHOWERS
BEGINNING AFTER MIDNIGHT. WIND SOUTH 20 KM/H. LOW 9.
SATURDAY..SHOWERS ENDING NEAR NOON THEN MAINLY CLOUDY WITH 40 PERCENT
CHANCE OF SHOWERS. HIGH 16. UV INDEX 4 OR MODERATE.
SAVANT LAKE - STURGEON LAKE.
TODAY..SUNNY. WIND BECOMING SOUTH 20 KM/H THIS AFTERNOON. HIGH 16. UV
INDEX 4 OR MODERATE.
TONIGHT..CLEAR EARLY THIS EVENING THEN PARTLY CLOUDY WITH SHOWERS
BEGINNING AFTER MIDNIGHT. WIND SOUTH 20 KM/H. LOW 9.
SATURDAY..SHOWERS ENDING NEAR NOON THEN MAINLY CLOUDY WITH 40 PERCENT
CHANCE OF SHOWERS. HIGH 16. UV INDEX 4 OR MODERATE.
GULL BAY - BLACK STURGEON LAKE.
TODAY..SUNNY. WIND BECOMING SOUTH 20 KM/H THIS AFTERNOON. HIGH 15. UV
INDEX 4 OR MODERATE.
TONIGHT..CLEAR. WIND SOUTH 20 KM/H BECOMING LIGHT THIS EVENING. LOW
PLUS 3.
SATURDAY..A MIX OF SUN AND CLOUD. 40 PERCENT CHANCE OF SHOWERS IN THE
AFTERNOON. HIGH 17. UV INDEX 4 OR MODERATE.
BEARDMORE - JELLICOE - MACDIARMID.
TODAY..SUNNY. HIGH 15. UV INDEX 4 OR MODERATE.
TONIGHT..CLEAR. LOW PLUS 3.
SATURDAY..A MIX OF SUN AND CLOUD. 40 PERCENT CHANCE OF SHOWERS IN THE
AFTERNOON. HIGH 17. UV INDEX 4 OR MODERATE.
ARMSTRONG - AUDEN - WABAKIMI PARK.
TODAY..SUNNY. WIND BECOMING SOUTH 20 KM/H THIS AFTERNOON. HIGH 15. UV
INDEX 4 OR MODERATE.
TONIGHT..CLEAR. WIND SOUTH 20 KM/H BECOMING LIGHT THIS EVENING. LOW
PLUS 3.
SATURDAY..A MIX OF SUN AND CLOUD WITH 60 PERCENT CHANCE OF SHOWERS.
HIGH 15. UV INDEX 3 OR MODERATE.
GERALDTON - LONGLAC - CARAMAT.
TODAY..MAINLY SUNNY. HIGH 15. UV INDEX 4 OR MODERATE.
TONIGHT..CLEAR. LOW PLUS 1.
SATURDAY..SUNNY IN THE MORNING THEN A MIX OF SUN AND CLOUD WITH
40 PERCENT CHANCE OF SHOWERS IN THE AFTERNOON. HIGH 16. UV INDEX 4
OR MODERATE.
MANITOUWADGE - HORNEPAYNE.
TODAY..A MIX OF SUN AND CLOUD. HIGH 15. UV INDEX 4 OR MODERATE.
TONIGHT..CLEAR. LOW ZERO.
SATURDAY..SUNNY. BECOMING A MIX OF SUN AND CLOUD LATE IN THE MORNING.
HIGH 16. UV INDEX 4 OR MODERATE.
NAKINA - AROLAND - PAGWA.
TODAY..MAINLY SUNNY. HIGH 15. UV INDEX 4 OR MODERATE.
TONIGHT..CLEAR. LOW ZERO.
SATURDAY..SUNNY IN THE MORNING THEN A MIX OF SUN AND CLOUD WITH
40 PERCENT CHANCE OF SHOWERS IN THE AFTERNOON. HIGH 16. UV INDEX 4
OR MODERATE.
NIPIGON - ROSSPORT.
TODAY..SUNNY. HIGH 15. UV INDEX 5 OR MODERATE.
TONIGHT..CLEAR. LOW PLUS 3 WITH PATCHY FROST.
SATURDAY..MAINLY SUNNY. HIGH 17. UV INDEX 5 OR MODERATE.
MARATHON - SCHREIBER.
TODAY..SUNNY. HIGH 15. UV INDEX 5 OR MODERATE.
TONIGHT..CLEAR. LOW PLUS 2 WITH PATCHY FROST.
SATURDAY..MAINLY SUNNY. HIGH 17. UV INDEX 5 OR MODERATE.
WAWA - PUKASKWA PARK.
TODAY..SUNNY. HIGH 15. UV INDEX 5 OR MODERATE.
TONIGHT..CLEAR. LOW PLUS 2 WITH PATCHY FROST.
SATURDAY..SUNNY. HIGH 17. UV INDEX 5 OR MODERATE.
WHITE RIVER - DUBREUILVILLE.
TODAY..MAINLY SUNNY. HIGH 15. UV INDEX 5 OR MODERATE.
TONIGHT..CLEAR. LOW PLUS 1 WITH RISK OF FROST.
SATURDAY..SUNNY. HIGH 17. UV INDEX 5 OR MODERATE.
SAULT STE. MARIE - ST. JOSEPH ISLAND.
TODAY..MAINLY SUNNY. HIGH 17. UV INDEX 5 OR MODERATE.
TONIGHT..CLEAR. BECOMING PARTLY CLOUDY THIS EVENING. WIND BECOMING
EAST 30 KM/H LATE THIS EVENING. LOW PLUS 4 WITH RISK OF FROST.
SATURDAY..A MIX OF SUN AND CLOUD. WIND BECOMING SOUTHEAST 20 KM/H IN
THE AFTERNOON. HIGH 19. UV INDEX 5 OR MODERATE.
SEARCHMONT - MONTREAL RIVER HARBOUR - BATCHAWANA BAY.
TODAY..SUNNY. HIGH 15. UV INDEX 5 OR MODERATE.
TONIGHT..CLEAR. BECOMING PARTLY CLOUDY THIS EVENING. LOW PLUS 3 WITH
PATCHY FROST.
SATURDAY..A MIX OF SUN AND CLOUD. WIND BECOMING SOUTHEAST 20 KM/H IN
THE AFTERNOON. HIGH 19. UV INDEX 5 OR MODERATE.
AGAWA - LAKE SUPERIOR PARK.
TODAY..SUNNY. HIGH 15. UV INDEX 5 OR MODERATE.
TONIGHT..CLEAR. BECOMING PARTLY CLOUDY THIS EVENING. LOW PLUS 2 WITH
PATCHY FROST.
SATURDAY..A MIX OF SUN AND CLOUD. WIND BECOMING SOUTHEAST 20 KM/H IN
THE AFTERNOON. HIGH 18. UV INDEX 5 OR MODERATE.
KAPUSKASING - HEARST - SMOOTH ROCK FALLS.
TODAY..CLOUDY. BECOMING A MIX OF SUN AND CLOUD THIS AFTERNOON.
HIGH 14. UV INDEX 3 OR MODERATE.
TONIGHT..CLEAR. LOW MINUS 1.
SATURDAY..MAINLY SUNNY. HIGH 17. UV INDEX 5 OR MODERATE.
FRASERDALE - PLEDGER LAKE.
TODAY..CLOUDY. BECOMING A MIX OF SUN AND CLOUD THIS AFTERNOON.
HIGH 13. UV INDEX 3 OR MODERATE.
TONIGHT..CLEARING THIS EVENING. LOW MINUS 1.
SATURDAY..SUNNY IN THE MORNING THEN A MIX OF SUN AND CLOUD WITH
30 PERCENT CHANCE OF SHOWERS LATE IN THE AFTERNOON. HIGH 16. UV
INDEX 5 OR MODERATE.
TIMMINS - COCHRANE - IROQUOIS FALLS.
TODAY..A MIX OF SUN AND CLOUD. WIND NORTH 20 KM/H BECOMING LIGHT THIS
AFTERNOON. HIGH 13. UV INDEX 4 OR MODERATE.
TONIGHT..CLEAR. LOW MINUS 1.
SATURDAY..SUNNY. HIGH 16. UV INDEX 5 OR MODERATE.
LITTLE ABITIBI - KESAGAMI LAKE.
TODAY..CLOUDY. BECOMING A MIX OF SUN AND CLOUD THIS AFTERNOON. WIND
NORTHWEST 20 KM/H BECOMING LIGHT THIS AFTERNOON. HIGH 13. UV INDEX 3
OR MODERATE.
TONIGHT..CLEAR. LOW MINUS 1.
SATURDAY..SUNNY. HIGH 16. UV INDEX 5 OR MODERATE.
GREATER SUDBURY AND VICINITY.
TODAY..SUNNY. WIND NORTH 20 KM/H BECOMING LIGHT THIS AFTERNOON.
HIGH 16. UV INDEX 5 OR MODERATE.
TONIGHT..PARTLY CLOUDY. LOW PLUS 1 WITH PATCHY FROST.
SATURDAY..MAINLY SUNNY. HIGH 17. UV INDEX 5 OR MODERATE.
CHAPLEAU - MISSINAIBI LAKE.
TODAY..MAINLY SUNNY. HIGH 14. UV INDEX 5 OR MODERATE.
TONIGHT..A FEW CLOUDS. LOW PLUS 2.
SATURDAY..SUNNY. BECOMING A MIX OF SUN AND CLOUD IN THE AFTERNOON.
HIGH 17. UV INDEX 5 OR MODERATE.
GOGAMA - FOLEYET.
TODAY..MAINLY SUNNY. HIGH 14. UV INDEX 5 OR MODERATE.
TONIGHT..PARTLY CLOUDY. BECOMING CLEAR AFTER MIDNIGHT. LOW PLUS 1.
SATURDAY..SUNNY. BECOMING A MIX OF SUN AND CLOUD IN THE AFTERNOON.
HIGH 17. UV INDEX 5 OR MODERATE.
KIRKLAND LAKE - ENGLEHART.
TODAY..MAINLY CLOUDY. WIND NORTH 20 KM/H BECOMING LIGHT THIS
AFTERNOON. HIGH 15. UV INDEX 5 OR MODERATE.
TONIGHT..PARTLY CLOUDY. BECOMING CLEAR NEAR MIDNIGHT. LOW ZERO WITH
PATCHY FROST.
SATURDAY..SUNNY. HIGH 16. UV INDEX 5 OR MODERATE.
TEMISKAMING SHORES - TEMAGAMI.
TODAY..MAINLY SUNNY. WIND NORTH 20 KM/H BECOMING LIGHT THIS
AFTERNOON. HIGH 15. UV INDEX 5 OR MODERATE.
TONIGHT..CLEAR. LOW PLUS 1 WITH PATCHY FROST.
SATURDAY..SUNNY. HIGH 16. UV INDEX 5 OR MODERATE.
ELLIOT LAKE - RANGER LAKE.
TODAY..SUNNY. HIGH 17. UV INDEX 5 OR MODERATE.
TONIGHT..A FEW CLOUDS. LOW PLUS 2 WITH PATCHY FROST.
SATURDAY..MAINLY SUNNY. HIGH 18. UV INDEX 5 OR MODERATE.
MANITOULIN ISLAND.
TODAY..SUNNY. HIGH 18. UV INDEX 5 OR MODERATE.
TONIGHT..CLEAR. BECOMING PARTLY CLOUDY THIS EVENING. WIND BECOMING
EAST 20 KM/H AFTER MIDNIGHT. LOW 7.
SATURDAY..A MIX OF SUN AND CLOUD. WIND EAST 20 KM/H BECOMING LIGHT IN
THE AFTERNOON. HIGH 19. UV INDEX 6 OR HIGH.
BLIND RIVER - THESSALON.
TODAY..SUNNY. HIGH 18. UV INDEX 5 OR MODERATE.
TONIGHT..CLEAR. BECOMING PARTLY CLOUDY THIS EVENING. LOW PLUS 2 WITH
PATCHY FROST.
SATURDAY..A MIX OF SUN AND CLOUD. WIND EAST 20 KM/H BECOMING LIGHT
LATE IN THE MORNING. HIGH 19. UV INDEX 6 OR HIGH.
ESPANOLA - KILLARNEY.
TODAY..SUNNY. WIND NORTH 20 KM/H BECOMING LIGHT THIS AFTERNOON.
HIGH 17. UV INDEX 5 OR MODERATE.
TONIGHT..CLEAR. BECOMING PARTLY CLOUDY THIS EVENING. LOW PLUS 2 WITH
PATCHY FROST.
SATURDAY..A MIX OF SUN AND CLOUD. WIND EAST 20 KM/H BECOMING LIGHT
LATE IN THE MORNING. HIGH 19. UV INDEX 6 OR HIGH.
NORTH BAY - POWASSAN - MATTAWA.
TODAY..SUNNY. WIND NORTH 20 KM/H BECOMING LIGHT THIS AFTERNOON.
HIGH 16. UV INDEX 5 OR MODERATE.
TONIGHT..CLEAR. BECOMING PARTLY CLOUDY THIS EVENING. LOW PLUS 1 WITH
PATCHY FROST.
SATURDAY..A MIX OF SUN AND CLOUD. BECOMING SUNNY IN THE MORNING.
HIGH 17. UV INDEX 5 OR MODERATE.
WEST NIPISSING - FRENCH RIVER.
TODAY..SUNNY. WIND NORTH 20 KM/H BECOMING LIGHT THIS AFTERNOON.
HIGH 16. UV INDEX 5 OR MODERATE.
TONIGHT..CLEAR. BECOMING PARTLY CLOUDY THIS EVENING. LOW PLUS 1 WITH
PATCHY FROST.
SATURDAY..A MIX OF SUN AND CLOUD. BECOMING SUNNY IN THE MORNING.
HIGH 17. UV INDEX 5 OR MODERATE.
END
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