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FPCN11 CWNT 261639
FORECASTS FOR THE GREAT SLAVE LAKE AND MACKENZIE RIVER AREAS OF THE
NORTHWEST TERRITORIES ISSUED BY ENVIRONMENT CANADA AT 11:00 A.M. MDT
WEDNESDAY 26 AUGUST 2026 FOR TODAY AND THURSDAY.
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 4:00 P.M. MDT.
THEBACHA REGION INCLUDING FT. SMITH - SALT RIVER RESERVE.
TODAY..SUNNY. WIND SOUTHEAST 20 KM/H GUSTING TO 40. HIGH 26. HUMIDEX
29. UV INDEX 4 OR MODERATE.
TONIGHT..CLEAR. WIND SOUTHEAST 20 KM/H GUSTING TO 40 BECOMING LIGHT
THIS EVENING. LOW 15.
THURSDAY..SUNNY. HIGH 28. HUMIDEX 32. UV INDEX 4 OR MODERATE.
LUTSEL K'E REGION.
TODAY..MAINLY SUNNY. WIND SOUTH 20 KM/H GUSTING TO 40. HIGH 23.
HUMIDEX 25. UV INDEX 3 OR MODERATE.
TONIGHT..A FEW CLOUDS. WIND SOUTH 20 KM/H GUSTING TO 40 BECOMING
LIGHT OVERNIGHT. LOW 16.
THURSDAY..MAINLY SUNNY. HIGH 25. HUMIDEX 29. UV INDEX 3 OR MODERATE.
FT. RESOLUTION REGION INCLUDING HWY. 6.
TODAY..MAINLY SUNNY. WIND SOUTH 20 KM/H GUSTING TO 40. HIGH 25.
HUMIDEX 28. UV INDEX 4 OR MODERATE.
TONIGHT..PARTLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS LATE THIS
EVENING AND OVERNIGHT WITH RISK OF A THUNDERSTORM. WIND SOUTH
20 KM/H GUSTING TO 40 BECOMING LIGHT NEAR MIDNIGHT. LOW 14.
THURSDAY..MAINLY SUNNY. INCREASING CLOUDINESS IN THE AFTERNOON. WIND
BECOMING NORTH 20 KM/H NEAR NOON. HIGH 24. HUMIDEX 28. UV INDEX 4 OR
MODERATE.
HAY RIVER REGION INCLUDING ENTERPRISE.
TODAY..A MIX OF SUN AND CLOUD. WIND SOUTHEAST 20 KM/H GUSTING TO 40.
HIGH 29. HUMIDEX 32. UV INDEX 4 OR MODERATE.
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS THIS EVENING
AND AFTER MIDNIGHT AND RISK OF A THUNDERSTORM. CLEARING BEFORE
MORNING. WIND SOUTHEAST 20 KM/H GUSTING TO 40 BECOMING NORTHWEST 20
THIS EVENING THEN LIGHT OVERNIGHT. LOW 13.
THURSDAY..SUNNY. INCREASING CLOUDINESS IN THE AFTERNOON. WIND
BECOMING NORTHEAST 20 KM/H NEAR NOON. HIGH 21. HUMIDEX 26. UV
INDEX 4 OR MODERATE.
FT. PROVIDENCE REGION INCLUDING KAKISA - CHAN LAKE.
TODAY..SUNNY EARLY THIS AFTERNOON THEN A MIX OF SUN AND CLOUD WITH
30 PERCENT CHANCE OF SHOWERS LATE THIS AFTERNOON. RISK OF A
THUNDERSTORM LATE THIS AFTERNOON. HIGH 30. HUMIDEX 32. UV INDEX 4 OR
MODERATE.
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS THIS EVENING
AND RISK OF A THUNDERSTORM. CLEARING OVERNIGHT. LOW 11.
THURSDAY..SUNNY IN THE MORNING AND EARLY IN THE AFTERNOON THEN A MIX
OF SUN AND CLOUD WITH 30 PERCENT CHANCE OF SHOWERS IN THE AFTERNOON.
RISK OF A THUNDERSTORM IN THE AFTERNOON. HIGH 23. HUMIDEX 26. UV
INDEX 4 OR MODERATE.
FT. SIMPSON REGION INCLUDING JEAN MARIE RIVER.
TODAY..MAINLY SUNNY. LOCAL SMOKE. HIGH 28. HUMIDEX 30. UV INDEX 3 OR
MODERATE.
TONIGHT..A FEW CLOUDS. LOCAL SMOKE. WIND BECOMING NORTH 20 KM/H
OVERNIGHT. LOW 12.
THURSDAY..INCREASING CLOUDINESS. PERIODS OF RAIN BEGINNING IN THE
MORNING. RISK OF A THUNDERSTORM IN THE AFTERNOON. AMOUNT 5 TO 10 MM.
LOCAL SMOKE. WIND NORTHWEST 30 KM/H. HIGH 13 WITH TEMPERATURE
FALLING TO 9 IN THE AFTERNOON. UV INDEX 1 OR LOW.
FT. LIARD REGION INCLUDING NAHANNI BUTTE - SAMBAA K'E.
TODAY..SUNNY. HIGH 28. HUMIDEX 30. UV INDEX 4 OR MODERATE.
TONIGHT..CLEAR. INCREASING CLOUDINESS AFTER MIDNIGHT THEN PERIODS OF
RAIN. WIDESPREAD SMOKE OVERNIGHT. LOW 13.
THURSDAY..PERIODS OF RAIN. RISK OF A THUNDERSTORM IN THE AFTERNOON.
AMOUNT 10 TO 15 MM. WIDESPREAD SMOKE. WIND BECOMING NORTHEAST
20 KM/H IN THE MORNING. HIGH 15. UV INDEX 1 OR LOW.
YELLOWKNIFE REGION.
TODAY..A MIX OF SUN AND CLOUD. WIND SOUTHEAST 30 KM/H GUSTING TO 50.
HIGH 22. HUMIDEX 25. UV INDEX 3 OR MODERATE.
TONIGHT..MAINLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS AND RISK OF
A THUNDERSTORM. WIND SOUTHEAST 30 KM/H GUSTING TO 50 BECOMING LIGHT
NEAR MIDNIGHT. LOW 13.
THURSDAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF SHOWERS EARLY
IN THE MORNING AND LATE IN THE AFTERNOON. RISK OF A THUNDERSTORM
LATE IN THE AFTERNOON. WIND BECOMING NORTH 20 KM/H NEAR NOON.
HIGH 23. HUMIDEX 27. UV INDEX 3 OR MODERATE.
NORTH SLAVE REGION INCLUDING WEKWEETI - WHATI - BEHCHOKO.
TODAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF SHOWERS LATE THIS
AFTERNOON WITH RISK OF A THUNDERSTORM. LOCAL SMOKE. WIND SOUTHEAST
20 KM/H GUSTING TO 40. HIGH 23. HUMIDEX 26. UV INDEX 3 OR MODERATE.
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS AND RISK OF
A THUNDERSTORM. WIND SOUTHEAST 20 KM/H GUSTING TO 40 BECOMING LIGHT
THIS EVENING. WIND BECOMING NORTH 20 OVERNIGHT. LOW 11.
THURSDAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF SHOWERS EARLY
IN THE MORNING AND LATE IN THE AFTERNOON. RISK OF A THUNDERSTORM
LATE IN THE AFTERNOON. WIND NORTHEAST 20 KM/H. HIGH 18. UV INDEX 3
OR MODERATE.
WRIGLEY REGION.
TODAY..SUNNY. BECOMING A MIX OF SUN AND CLOUD THIS AFTERNOON. LOCAL
SMOKE. HIGH 24. HUMIDEX 25. UV INDEX 3 OR MODERATE.
TONIGHT..BECOMING CLOUDY LATE THIS EVENING THEN PERIODS OF RAIN.
AMOUNT 5 MM. LOW 10.
THURSDAY..PERIODS OF RAIN. AMOUNT 5 TO 10 MM. TEMPERATURE STEADY
NEAR 9. UV INDEX 1 OR LOW.
NORMAN WELLS - TULITA REGION.
TODAY..INCREASING CLOUDINESS. 60 PERCENT CHANCE OF SHOWERS LATE THIS
AFTERNOON. WIND WEST 30 KM/H GUSTING TO 50. HIGH 17. UV INDEX 3 OR
MODERATE.
TONIGHT..CLOUDY. 60 PERCENT CHANCE OF SHOWERS THIS EVENING. WIND WEST
30 KM/H GUSTING TO 50 BECOMING LIGHT THIS EVENING. LOW 8.
THURSDAY..CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS. HIGH 12. UV
INDEX 2 OR LOW.
FORT GOOD HOPE REGION.
TODAY..MAINLY CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. WIND WEST
30 KM/H GUSTING TO 50. HIGH 16. UV INDEX 2 OR LOW.
TONIGHT..MAINLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS THIS EVENING
AND AFTER MIDNIGHT. CLEARING BEFORE MORNING. WIND WEST 30 KM/H
GUSTING TO 50 BECOMING LIGHT THIS EVENING. LOW PLUS 4.
THURSDAY..SUNNY. BECOMING A MIX OF SUN AND CLOUD IN THE MORNING.
HIGH 13. UV INDEX 2 OR LOW.
DELINE.
TODAY..SUNNY EARLY THIS AFTERNOON THEN A MIX OF SUN AND CLOUD WITH
30 PERCENT CHANCE OF SHOWERS THIS AFTERNOON. LOCAL SMOKE. WIND
NORTHWEST 20 KM/H. HIGH 21. UV INDEX 3 OR MODERATE.
TONIGHT..MAINLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS EARLY THIS
EVENING. WIND NORTHWEST 20 KM/H. LOW 6.
THURSDAY..CLOUDY. TEMPERATURE STEADY NEAR 8. UV INDEX 2 OR LOW.
COLVILLE LAKE.
TODAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF SHOWERS THIS
AFTERNOON. LOCAL SMOKE. WIND BECOMING NORTHWEST 30 KM/H GUSTING TO
50 THIS AFTERNOON. HIGH 17. UV INDEX 3 OR MODERATE.
TONIGHT..PARTLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS EARLY THIS
EVENING. WIND NORTHWEST 30 KM/H GUSTING TO 50 BECOMING LIGHT
OVERNIGHT. LOW PLUS 3.
THURSDAY..A MIX OF SUN AND CLOUD. HIGH 10. UV INDEX 2 OR LOW.
END
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