811
FPCN11 CWNT 182130
FORECASTS FOR THE GREAT SLAVE LAKE AND MACKENZIE RIVER AREAS OF THE
NORTHWEST TERRITORIES ISSUED BY ENVIRONMENT CANADA AT 4:00 P.M. MDT
MONDAY 18 MAY 2026 FOR TONIGHT TUESDAY AND TUESDAY NIGHT.
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 5:00 A.M. MDT TUESDAY.
THEBACHA REGION INCLUDING FT. SMITH - SALT RIVER RESERVE.
TONIGHT..A FEW CLOUDS. WIND SOUTH 20 KM/H BECOMING LIGHT EARLY THIS
EVENING. LOW PLUS 5.
TUESDAY..SUNNY. BECOMING A MIX OF SUN AND CLOUD IN THE AFTERNOON.
HIGH 19. UV INDEX 5 OR MODERATE.
TUESDAY NIGHT..MAINLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS IN THE
EVENING AND AFTER MIDNIGHT. LOW PLUS 5.
LUTSEL K'E REGION.
TONIGHT..A FEW CLOUDS. WIND BECOMING SOUTHEAST 20 KM/H EARLY THIS
EVENING. LOW PLUS 3.
TUESDAY..A MIX OF SUN AND CLOUD. HIGH 14. UV INDEX 4 OR MODERATE.
TUESDAY NIGHT..PARTLY CLOUDY. LOW PLUS 5.
FT. RESOLUTION REGION INCLUDING HWY. 6.
TONIGHT..CLEAR. BECOMING PARTLY CLOUDY THIS EVENING. WIND SOUTHEAST
30 KM/H BECOMING LIGHT NEAR MIDNIGHT. LOW 9.
TUESDAY..SUNNY IN THE MORNING THEN A MIX OF SUN AND CLOUD WITH
30 PERCENT CHANCE OF SHOWERS LATE IN THE AFTERNOON. HIGH 18. UV
INDEX 4 OR MODERATE.
TUESDAY NIGHT..MAINLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS EARLY IN
THE EVENING. LOW PLUS 5.
HAY RIVER REGION INCLUDING ENTERPRISE.
TONIGHT..PARTLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS EARLY THIS
EVENING WITH RISK OF A THUNDERSTORM. WIND SOUTHEAST 20 KM/H BECOMING
LIGHT NEAR MIDNIGHT. LOW 8.
TUESDAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF SHOWERS LATE IN
THE AFTERNOON WITH RISK OF A THUNDERSTORM. HIGH 17. UV INDEX 5 OR
MODERATE.
TUESDAY NIGHT..MAINLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS EARLY IN
THE EVENING WITH RISK OF A THUNDERSTORM. LOW 8.
FT. PROVIDENCE REGION INCLUDING KAKISA - CHAN LAKE.
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS EARLY THIS
EVENING. OTHERWISE CLEAR. RISK OF A THUNDERSTORM EARLY THIS EVENING.
LOW 6.
TUESDAY..INCREASING CLOUDINESS EARLY IN THE MORNING. 30 PERCENT
CHANCE OF SHOWERS LATE IN THE AFTERNOON WITH RISK OF A THUNDERSTORM.
HIGH 17. UV INDEX 3 OR MODERATE.
TUESDAY NIGHT..MAINLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS. RISK
OF A THUNDERSTORM EARLY IN THE EVENING. LOW 10.
FT. SIMPSON REGION INCLUDING JEAN MARIE RIVER.
TONIGHT..A FEW CLOUDS. LOW 10.
TUESDAY..INCREASING CLOUDINESS EARLY IN THE MORNING. 30 PERCENT
CHANCE OF SHOWERS IN THE AFTERNOON. HIGH 19. UV INDEX 3 OR MODERATE.
TUESDAY NIGHT..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. WIND
NORTHWEST 20 KM/H BECOMING LIGHT IN THE EVENING. LOW 8.
FT. LIARD REGION INCLUDING NAHANNI BUTTE - SAMBAA K'E.
TONIGHT..A FEW CLOUDS. INCREASING CLOUDINESS LATE THIS EVENING. WIND
SOUTHWEST 20 KM/H GUSTING TO 40 BECOMING LIGHT EARLY THIS EVENING.
LOW 9.
TUESDAY..CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS. HIGH 17. UV
INDEX 3 OR MODERATE.
TUESDAY NIGHT..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. LOW 7.
YELLOWKNIFE REGION.
TONIGHT..CLEAR EARLY THIS EVENING THEN PARTLY CLOUDY WITH 30 PERCENT
CHANCE OF SHOWERS LATE THIS EVENING. WIND SOUTHEAST 40 KM/H GUSTING
TO 60 DIMINISHING TO 20 THIS EVENING. LOW 7.
TUESDAY..SUNNY. BECOMING A MIX OF SUN AND CLOUD IN THE AFTERNOON.
WIND SOUTHEAST 20 KM/H. HIGH 13. UV INDEX 4 OR MODERATE.
TUESDAY NIGHT..MAINLY CLOUDY. LOW 6.
NORTH SLAVE REGION INCLUDING WEKWEETI - WHATI - BEHCHOKO.
TONIGHT..PARTLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS THIS EVENING AND
AFTER MIDNIGHT. RISK OF A THUNDERSTORM EARLY THIS EVENING. WIND
SOUTH 30 KM/H GUSTING TO 50 BECOMING LIGHT THIS EVENING. LOW 6.
TUESDAY..MAINLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS LATE IN THE
AFTERNOON WITH RISK OF A THUNDERSTORM. HIGH 14. UV INDEX 4 OR
MODERATE.
TUESDAY NIGHT..MAINLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS EARLY IN
THE EVENING WITH RISK OF A THUNDERSTORM. LOW PLUS 5.
WRIGLEY REGION.
TONIGHT..PARTLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS EARLY THIS
EVENING. CLEARING OVERNIGHT. LOW PLUS 4.
TUESDAY..SUNNY EARLY IN THE MORNING THEN A MIX OF SUN AND CLOUD WITH
30 PERCENT CHANCE OF SHOWERS IN THE AFTERNOON. HIGH 18. UV INDEX 4
OR MODERATE.
TUESDAY NIGHT..PARTLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS IN THE
EVENING. LOW PLUS 4.
NORMAN WELLS - TULITA REGION.
TONIGHT..MAINLY CLOUDY. LOW 6.
TUESDAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF SHOWERS IN THE
MORNING. WIND BECOMING WEST 20 KM/H NEAR NOON. HIGH 13. UV INDEX 4
OR MODERATE.
TUESDAY NIGHT..PARTLY CLOUDY. CLEARING NEAR MIDNIGHT. LOW PLUS 4.
FORT GOOD HOPE REGION.
TONIGHT..MAINLY CLOUDY. WIND WEST 20 KM/H BECOMING LIGHT EARLY THIS
EVENING. LOW PLUS 5.
TUESDAY..MAINLY CLOUDY. HIGH 12. UV INDEX 3 OR MODERATE.
TUESDAY NIGHT..MAINLY CLOUDY. LOW PLUS 3.
DELINE.
TONIGHT..CLEAR. BECOMING PARTLY CLOUDY THIS EVENING. LOW PLUS 4.
TUESDAY..MAINLY CLOUDY. CLEARING IN THE AFTERNOON. WIND BECOMING
NORTHWEST 20 KM/H IN THE MORNING. HIGH 11. UV INDEX 4 OR MODERATE.
TUESDAY NIGHT..CLEAR. WIND NORTHWEST 20 KM/H BECOMING LIGHT IN THE
EVENING. LOW MINUS 1. WIND CHILL MINUS 5 OVERNIGHT.
COLVILLE LAKE.
TONIGHT..PARTLY CLOUDY. BECOMING CLOUDY NEAR MIDNIGHT. LOW PLUS 2.
TUESDAY..MAINLY CLOUDY. HIGH PLUS 5. UV INDEX 4 OR MODERATE.
TUESDAY NIGHT..MAINLY CLOUDY. WIND UP TO 15 KM/H. LOW MINUS 2. WIND
CHILL MINUS 4 OVERNIGHT.
END
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