729
FPCN11 CWNT 211654
FORECASTS FOR THE GREAT SLAVE LAKE AND MACKENZIE RIVER AREAS OF THE
NORTHWEST TERRITORIES ISSUED BY ENVIRONMENT CANADA AT 11:00 A.M. MDT
THURSDAY 21 MAY 2026 FOR TODAY AND FRIDAY.
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 4:00 P.M. MDT.
THEBACHA REGION INCLUDING FT. SMITH - SALT RIVER RESERVE.
TODAY..INCREASING CLOUDINESS THIS AFTERNOON. HIGH 19. UV INDEX 5 OR
MODERATE.
TONIGHT..CLOUDY. 30 PERCENT CHANCE OF SHOWERS EARLY THIS EVENING WITH
RISK OF A THUNDERSTORM. LOW 9.
FRIDAY..CLOUDY. BECOMING A MIX OF SUN AND CLOUD IN THE MORNING.
HIGH 21. UV INDEX 4 OR MODERATE.
LUTSEL K'E REGION.
TODAY..A MIX OF SUN AND CLOUD. WIND BECOMING NORTHEAST 20 KM/H THIS
AFTERNOON. HIGH 13. UV INDEX 5 OR MODERATE.
TONIGHT..CLOUDY. 40 PERCENT CHANCE OF SHOWERS THIS EVENING AND AFTER
MIDNIGHT. RISK OF A THUNDERSTORM EARLY THIS EVENING. WIND NORTHEAST
20 KM/H BECOMING LIGHT THIS EVENING. LOW 7.
FRIDAY..CLOUDY. BECOMING A MIX OF SUN AND CLOUD IN THE MORNING.
HIGH 17. UV INDEX 4 OR MODERATE.
FT. RESOLUTION REGION INCLUDING HWY. 6.
TODAY..MAINLY CLOUDY. HIGH 19. UV INDEX 4 OR MODERATE.
TONIGHT..CLOUDY. 30 PERCENT CHANCE OF SHOWERS THIS EVENING. RISK OF A
THUNDERSTORM EARLY THIS EVENING. LOW 9.
FRIDAY..CLEARING IN THE MORNING. HIGH 18. UV INDEX 4 OR MODERATE.
HAY RIVER REGION INCLUDING ENTERPRISE.
TODAY..INCREASING CLOUDINESS EARLY THIS AFTERNOON. HIGH 20. UV
INDEX 5 OR MODERATE.
TONIGHT..CLEARING NEAR MIDNIGHT. LOW 10.
FRIDAY..SUNNY. BECOMING A MIX OF SUN AND CLOUD IN THE AFTERNOON.
HIGH 18. UV INDEX 5 OR MODERATE.
FT. PROVIDENCE REGION INCLUDING KAKISA - CHAN LAKE.
TODAY..MAINLY CLOUDY. HIGH 19. UV INDEX 4 OR MODERATE.
TONIGHT..CLEARING THIS EVENING. LOW 7.
FRIDAY..SUNNY. BECOMING A MIX OF SUN AND CLOUD IN THE AFTERNOON.
HIGH 22. UV INDEX 4 OR MODERATE.
FT. SIMPSON REGION INCLUDING JEAN MARIE RIVER.
TODAY..A MIX OF SUN AND CLOUD. HIGH 23. UV INDEX 4 OR MODERATE.
TONIGHT..PARTLY CLOUDY. CLEARING NEAR MIDNIGHT. LOW 10.
FRIDAY..SUNNY. BECOMING A MIX OF SUN AND CLOUD IN THE AFTERNOON.
HIGH 23. UV INDEX 4 OR MODERATE.
FT. LIARD REGION INCLUDING NAHANNI BUTTE - SAMBAA K'E.
TODAY..CLEARING EARLY THIS AFTERNOON. WIND SOUTHWEST 20 KM/H.
HIGH 23. UV INDEX 4 OR MODERATE.
TONIGHT..CLEAR. WIND SOUTHWEST 20 KM/H BECOMING LIGHT THIS EVENING.
LOW 8.
FRIDAY..SUNNY. BECOMING A MIX OF SUN AND CLOUD IN THE AFTERNOON. WIND
BECOMING SOUTHWEST 20 KM/H NEAR NOON. HIGH 23. UV INDEX 5 OR
MODERATE.
YELLOWKNIFE REGION.
TODAY..CLOUDY. WIND SOUTHEAST 20 KM/H. HIGH 17. UV INDEX 4 OR
MODERATE.
TONIGHT..CLOUDY. BECOMING PARTLY CLOUDY NEAR MIDNIGHT. WIND SOUTHEAST
20 KM/H BECOMING LIGHT THIS EVENING. LOW 7.
FRIDAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF SHOWERS LATE IN
THE AFTERNOON. HIGH 17. UV INDEX 4 OR MODERATE.
NORTH SLAVE REGION INCLUDING WEKWEETI - WHATI - BEHCHOKO.
TODAY..MAINLY CLOUDY. WIND SOUTHEAST 20 KM/H. HIGH 17. UV INDEX 4 OR
MODERATE.
TONIGHT..PARTLY CLOUDY. CLEARING BEFORE MORNING. WIND SOUTHEAST
20 KM/H BECOMING LIGHT THIS EVENING. LOW 7.
FRIDAY..SUNNY. HIGH 17. UV INDEX 4 OR MODERATE.
WRIGLEY REGION.
TODAY..A MIX OF SUN AND CLOUD. HIGH 21. UV INDEX 4 OR MODERATE.
TONIGHT..CLEARING LATE THIS EVENING. LOW PLUS 5.
FRIDAY..INCREASING CLOUDINESS. 60 PERCENT CHANCE OF SHOWERS LATE IN
THE AFTERNOON WITH RISK OF A THUNDERSTORM. HIGH 18. UV INDEX 4 OR
MODERATE.
NORMAN WELLS - TULITA REGION.
TODAY..MAINLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS. RISK OF A
THUNDERSTORM LATE THIS AFTERNOON. WIND WEST 20 KM/H. HIGH 17. UV
INDEX 3 OR MODERATE.
TONIGHT..PARTLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS THIS EVENING
WITH RISK OF A THUNDERSTORM. WIND WEST 20 KM/H BECOMING LIGHT THIS
EVENING. LOW 6.
FRIDAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF SHOWERS LATE IN
THE AFTERNOON WITH RISK OF A THUNDERSTORM. HIGH 15. UV INDEX 4 OR
MODERATE.
FORT GOOD HOPE REGION.
TODAY..RAIN. WIND WEST 20 KM/H. HIGH 16. UV INDEX 1 OR LOW.
TONIGHT..RAIN ENDING THIS EVENING THEN PARTLY CLOUDY. WIND WEST
20 KM/H BECOMING LIGHT THIS EVENING. LOW 6.
FRIDAY..A MIX OF SUN AND CLOUD. HIGH 14. UV INDEX 4 OR MODERATE.
DELINE.
TODAY..MAINLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS. RISK OF A
THUNDERSTORM LATE THIS AFTERNOON. HIGH 12. UV INDEX 3 OR MODERATE.
TONIGHT..PARTLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS THIS EVENING.
RISK OF A THUNDERSTORM EARLY THIS EVENING. LOW PLUS 4.
FRIDAY..A MIX OF SUN AND CLOUD. HIGH 14. UV INDEX 4 OR MODERATE.
COLVILLE LAKE.
TODAY..RAIN. AMOUNT 5 MM. HIGH 7. UV INDEX 1 OR LOW.
TONIGHT..RAIN ENDING NEAR MIDNIGHT THEN CLOUDY WITH 30 PERCENT CHANCE
OF SHOWERS. LOW PLUS 2.
FRIDAY..CLOUDY. 30 PERCENT CHANCE OF SHOWERS EARLY IN THE MORNING.
HIGH 7. UV INDEX 2 OR LOW.
END
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