404
FPCN51 CWNT 152124
EXTENDED FORECASTS FROM THURSDAY 17 SEPTEMBER TO MONDAY 21 SEPTEMBER
FOR THE GREAT SLAVE LAKE AND MACKENZIE RIVER AREAS OF THE NORTHWEST
TERRITORIES ISSUED BY ENVIRONMENT CANADA AT 3:30 P.M. MDT TUESDAY 15
SEPTEMBER 2026.
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 4:30 A.M. MDT
WEDNESDAY.
THEBACHA REGION INCLUDING FT. SMITH - SALT RIVER RESERVE.
THURSDAY..A MIX OF SUN AND CLOUD. HIGH 17.
THURSDAY NIGHT..CLEAR. LOW PLUS 3.
FRIDAY..SUNNY. HIGH 16.
FRIDAY NIGHT..CLOUDY PERIODS. LOW 7.
SATURDAY..CLOUDY. HIGH 19.
SATURDAY NIGHT..CLOUDY PERIODS. LOW PLUS 5.
SUNDAY..A MIX OF SUN AND CLOUD. HIGH 19.
SUNDAY NIGHT..CLOUDY PERIODS. LOW 6.
MONDAY..A MIX OF SUN AND CLOUD. HIGH 18.
NORMALS FOR THE PERIOD..LOW PLUS 2. HIGH 12.
LUTSEL K'E REGION.
THURSDAY..PERIODS OF RAIN. HIGH 9.
THURSDAY NIGHT..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. LOW 7.
FRIDAY..CLEARING. HIGH 12.
FRIDAY NIGHT..CLEAR. LOW PLUS 5.
SATURDAY..INCREASING CLOUDINESS. HIGH 18.
SATURDAY NIGHT..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. LOW 7.
SUNDAY..CLOUDY. HIGH 16.
SUNDAY NIGHT..CLOUDY. LOW 7.
MONDAY..CLOUDY. HIGH 15.
NORMALS FOR THE PERIOD..LOW PLUS 2. HIGH 9.
FT. RESOLUTION REGION INCLUDING HWY. 6.
THURSDAY..A MIX OF SUN AND CLOUD. HIGH 15.
THURSDAY NIGHT..CLEAR. LOW PLUS 4.
FRIDAY..SUNNY. HIGH 15.
FRIDAY NIGHT..CLOUDY PERIODS. LOW 7.
SATURDAY..INCREASING CLOUDINESS. HIGH 17.
SATURDAY NIGHT..CLOUDY PERIODS. LOW PLUS 5.
SUNDAY..A MIX OF SUN AND CLOUD. HIGH 17.
SUNDAY NIGHT..CLOUDY PERIODS. LOW 6.
MONDAY..A MIX OF SUN AND CLOUD. HIGH 16.
NORMALS FOR THE PERIOD..LOW PLUS 3. HIGH 11.
HAY RIVER REGION INCLUDING ENTERPRISE.
THURSDAY..SUNNY. HIGH 17.
THURSDAY NIGHT..CLEAR. LOW PLUS 4.
FRIDAY..SUNNY. HIGH 17.
FRIDAY NIGHT..CLOUDY PERIODS. LOW 7.
SATURDAY..CLOUDY. HIGH 17.
SATURDAY NIGHT..CLEAR. LOW 6.
SUNDAY..SUNNY. HIGH 18.
SUNDAY NIGHT..CLOUDY PERIODS. LOW 7.
MONDAY..A MIX OF SUN AND CLOUD. HIGH 17.
NORMALS FOR THE PERIOD..LOW PLUS 4. HIGH 13.
FT. PROVIDENCE REGION INCLUDING KAKISA - CHAN LAKE.
THURSDAY..SUNNY. HIGH 17.
THURSDAY NIGHT..CLEAR. LOW PLUS 4.
FRIDAY..SUNNY. HIGH 18.
FRIDAY NIGHT..CLEAR. LOW PLUS 5.
SATURDAY..CLOUDY. HIGH 17.
SATURDAY NIGHT..CLEARING. LOW PLUS 4.
SUNDAY..A MIX OF SUN AND CLOUD. HIGH 17.
SUNDAY NIGHT..CLOUDY PERIODS. LOW PLUS 5.
MONDAY..A MIX OF SUN AND CLOUD. HIGH 16.
NORMALS FOR THE PERIOD..LOW PLUS 3. HIGH 13.
FT. SIMPSON REGION INCLUDING JEAN MARIE RIVER.
THURSDAY..SUNNY. HIGH 17.
THURSDAY NIGHT..CLEAR. LOW PLUS 3.
FRIDAY..SUNNY. HIGH 16.
FRIDAY NIGHT..CLEAR. LOW 6.
SATURDAY..A MIX OF SUN AND CLOUD. HIGH 18.
SATURDAY NIGHT..CLEAR. LOW PLUS 4.
SUNDAY..A MIX OF SUN AND CLOUD. HIGH 17.
SUNDAY NIGHT..CLEAR. LOW PLUS 4.
MONDAY..A MIX OF SUN AND CLOUD. HIGH 16.
NORMALS FOR THE PERIOD..LOW PLUS 2. HIGH 13.
FT. LIARD REGION INCLUDING NAHANNI BUTTE - SAMBAA K'E.
THURSDAY..SUNNY. HIGH 21.
THURSDAY NIGHT..CLEAR. LOW PLUS 4.
FRIDAY..SUNNY. HIGH 20.
FRIDAY NIGHT..INCREASING CLOUDINESS. LOW 7.
SATURDAY..CLEARING. HIGH 20.
SATURDAY NIGHT..CLOUDY PERIODS. LOW PLUS 4.
SUNDAY..A MIX OF SUN AND CLOUD. HIGH 16.
SUNDAY NIGHT..CLOUDY PERIODS. LOW PLUS 3.
MONDAY..A MIX OF SUN AND CLOUD. HIGH 14.
NORMALS FOR THE PERIOD..LOW PLUS 4. HIGH 15.
YELLOWKNIFE REGION.
THURSDAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. HIGH 11.
THURSDAY NIGHT..CLEARING. LOW PLUS 4.
FRIDAY..SUNNY. HIGH 13.
FRIDAY NIGHT..CLEAR. LOW 6.
SATURDAY..INCREASING CLOUDINESS. HIGH 14.
SATURDAY NIGHT..CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS. LOW 7.
SUNDAY..CLOUDY. HIGH 13.
SUNDAY NIGHT..CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS. LOW 7.
MONDAY..CLOUDY. HIGH 13.
NORMALS FOR THE PERIOD..LOW PLUS 3. HIGH 10.
NORTH SLAVE REGION INCLUDING WEKWEETI - WHATI - BEHCHOKO.
THURSDAY..A MIX OF SUN AND CLOUD. HIGH 13.
THURSDAY NIGHT..CLEAR. LOW PLUS 3.
FRIDAY..SUNNY. HIGH 13.
FRIDAY NIGHT..CLEAR. LOW 6.
SATURDAY..INCREASING CLOUDINESS. HIGH 15.
SATURDAY NIGHT..CLOUDY PERIODS WITH 30 PERCENT CHANCE OF SHOWERS.
LOW 6.
SUNDAY..A MIX OF SUN AND CLOUD. HIGH 15.
SUNDAY NIGHT..CLOUDY PERIODS. LOW 6.
MONDAY..A MIX OF SUN AND CLOUD. HIGH 14.
NORMALS FOR THE PERIOD..LOW PLUS 3. HIGH 10.
WRIGLEY REGION.
THURSDAY..A MIX OF SUN AND CLOUD. HIGH 15.
THURSDAY NIGHT..CLEAR. LOW PLUS 3.
FRIDAY..SUNNY. HIGH 15.
FRIDAY NIGHT..CLEAR. LOW PLUS 5.
SATURDAY..A MIX OF SUN AND CLOUD. HIGH 16.
SATURDAY NIGHT..CLOUDY PERIODS. LOW PLUS 5.
SUNDAY..A MIX OF SUN AND CLOUD. HIGH 14.
SUNDAY NIGHT..CLOUDY PERIODS. LOW PLUS 4.
MONDAY..A MIX OF SUN AND CLOUD. HIGH 12.
NORMALS FOR THE PERIOD..LOW PLUS 2. HIGH 12.
NORMAN WELLS - TULITA REGION.
THURSDAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. HIGH 13.
THURSDAY NIGHT..CLOUDY PERIODS. LOW PLUS 3.
FRIDAY..SUNNY. HIGH 13.
FRIDAY NIGHT..CLEAR. LOW PLUS 4.
SATURDAY..A MIX OF SUN AND CLOUD. HIGH 15.
SATURDAY NIGHT..CLOUDY PERIODS. LOW PLUS 4.
SUNDAY..A MIX OF SUN AND CLOUD. HIGH 14.
SUNDAY NIGHT..CLOUDY PERIODS. LOW PLUS 4.
MONDAY..CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS. HIGH 10.
NORMALS FOR THE PERIOD..LOW PLUS 2. HIGH 10.
FORT GOOD HOPE REGION.
THURSDAY..A MIX OF SUN AND CLOUD. HIGH 11.
THURSDAY NIGHT..CLOUDY PERIODS. LOW 6.
FRIDAY..SUNNY. HIGH 14.
FRIDAY NIGHT..CLEAR. LOW PLUS 2.
SATURDAY..CLOUDY. HIGH 13.
SATURDAY NIGHT..CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS. LOW PLUS 4.
SUNDAY..CLOUDY. HIGH 8.
SUNDAY NIGHT..CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS. LOW PLUS 2.
MONDAY..CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS. HIGH 7.
NORMALS FOR THE PERIOD..LOW PLUS 1. HIGH 9.
DELINE.
THURSDAY..A MIX OF SUN AND CLOUD. HIGH 12.
THURSDAY NIGHT..CLOUDY PERIODS. LOW PLUS 4.
FRIDAY..SUNNY. HIGH 13.
FRIDAY NIGHT..CLEAR. LOW PLUS 3.
SATURDAY..A MIX OF SUN AND CLOUD. HIGH 12.
SATURDAY NIGHT..CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS. LOW PLUS 5.
SUNDAY..CLOUDY. HIGH 12.
SUNDAY NIGHT..CLOUDY. LOW PLUS 4.
MONDAY..CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS. HIGH 10.
NORMALS FOR THE PERIOD..LOW PLUS 2. HIGH 10.
COLVILLE LAKE.
THURSDAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. HIGH 8.
THURSDAY NIGHT..CLOUDY. LOW PLUS 2.
FRIDAY..A MIX OF SUN AND CLOUD. HIGH 10.
FRIDAY NIGHT..CLEAR. LOW PLUS 1.
SATURDAY..INCREASING CLOUDINESS. HIGH 12.
SATURDAY NIGHT..CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS. LOW PLUS 4.
SUNDAY..CLOUDY. HIGH 8.
SUNDAY NIGHT..CLOUDY. LOW PLUS 3.
MONDAY..CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS. HIGH 6.
NORMALS FOR THE PERIOD..LOW PLUS 1. HIGH 8.
END
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