680   
FPCN51 CWNT 161024  
EXTENDED FORECASTS FROM WEDNESDAY NIGHT 17 SEPTEMBER TO MONDAY 22  
SEPTEMBER FOR THE GREAT SLAVE LAKE AND MACKENZIE RIVER AREAS OF THE  
NORTHWEST TERRITORIES ISSUED BY ENVIRONMENT CANADA AT 4:30 A.M. MDT  
TUESDAY 16 SEPTEMBER 2025.  
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 10:30 A.M. MDT.  
  
THEBACHA REGION INCLUDING FT. SMITH - SALT RIVER RESERVE.  
WEDNESDAY NIGHT..CLEAR. LOW 13.  
THURSDAY..SUNNY. HIGH 22.  
THURSDAY NIGHT..CLEAR. LOW 7.  
FRIDAY..SUNNY. HIGH 22.  
FRIDAY NIGHT..CLEAR. LOW 11.  
SATURDAY..SUNNY. HIGH 23.  
SATURDAY NIGHT..CLOUDY PERIODS. LOW 10.  
SUNDAY..A MIX OF SUN AND CLOUD. HIGH 20.  
SUNDAY NIGHT..CLOUDY PERIODS WITH 30 PERCENT CHANCE OF SHOWERS.  
 LOW 7.  
MONDAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. HIGH 14.  
NORMALS FOR THE PERIOD..LOW PLUS 2. HIGH 12.  
  
LUTSEL K'E REGION.  
WEDNESDAY NIGHT..CLEAR. LOW 14.  
THURSDAY..SUNNY. HIGH 20.  
THURSDAY NIGHT..CLEAR. LOW 8.  
FRIDAY..SUNNY. HIGH 18.  
FRIDAY NIGHT..CLEAR. LOW 11.  
SATURDAY..SUNNY. HIGH 20.  
SATURDAY NIGHT..CLOUDY. LOW 10.  
SUNDAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. HIGH 16.  
SUNDAY NIGHT..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. LOW 8.  
MONDAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. HIGH 12.  
NORMALS FOR THE PERIOD..LOW PLUS 2. HIGH 9.  
  
FT. RESOLUTION REGION INCLUDING HWY. 6.  
WEDNESDAY NIGHT..CLEAR. LOW 13.  
THURSDAY..SUNNY. HIGH 21.  
THURSDAY NIGHT..CLEAR. LOW 8.  
FRIDAY..SUNNY. HIGH 19.  
FRIDAY NIGHT..CLEAR. LOW 10.  
SATURDAY..SUNNY. HIGH 21.  
SATURDAY NIGHT..CLOUDY PERIODS. LOW 9.  
SUNDAY..CLOUDY. HIGH 17.  
SUNDAY NIGHT..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. LOW 7.  
MONDAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. HIGH 13.  
NORMALS FOR THE PERIOD..LOW PLUS 3. HIGH 11.  
  
HAY RIVER REGION INCLUDING ENTERPRISE.  
WEDNESDAY NIGHT..CLEAR. LOW 14.  
THURSDAY..SUNNY. HIGH 20.  
THURSDAY NIGHT..CLEAR. LOW 8.  
FRIDAY..SUNNY. HIGH 21.  
FRIDAY NIGHT..CLEAR. LOW 12.  
SATURDAY..SUNNY. HIGH 21.  
SATURDAY NIGHT..CLOUDY PERIODS. LOW 10.  
SUNDAY..A MIX OF SUN AND CLOUD. HIGH 17.  
SUNDAY NIGHT..CLOUDY PERIODS WITH 30 PERCENT CHANCE OF SHOWERS.  
 LOW 8.  
MONDAY..A MIX OF SUN AND CLOUD. HIGH 13.  
NORMALS FOR THE PERIOD..LOW PLUS 3. HIGH 12.  
  
FT. PROVIDENCE REGION INCLUDING KAKISA - CHAN LAKE.  
WEDNESDAY NIGHT..CLEAR. LOW 14.  
THURSDAY..SUNNY. HIGH 19.  
THURSDAY NIGHT..CLEAR. LOW 7.  
FRIDAY..SUNNY. HIGH 21.  
FRIDAY NIGHT..CLEAR. LOW 10.  
SATURDAY..SUNNY. HIGH 21.  
SATURDAY NIGHT..CLOUDY PERIODS WITH 60 PERCENT CHANCE OF SHOWERS.  
 LOW 8.  
SUNDAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. HIGH 17.  
SUNDAY NIGHT..CLOUDY PERIODS WITH 30 PERCENT CHANCE OF SHOWERS.  
 LOW 6.  
MONDAY..A MIX OF SUN AND CLOUD. HIGH 14.  
NORMALS FOR THE PERIOD..LOW PLUS 3. HIGH 12.  
  
FT. SIMPSON REGION INCLUDING JEAN MARIE RIVER.  
WEDNESDAY NIGHT..CLEAR. LOW 11.  
THURSDAY..SUNNY. HIGH 19.  
THURSDAY NIGHT..CLEAR. LOW 9.  
FRIDAY..SUNNY. HIGH 21.  
FRIDAY NIGHT..CLEAR. LOW 11.  
SATURDAY..A MIX OF SUN AND CLOUD. HIGH 19.  
SATURDAY NIGHT..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. LOW 7.  
SUNDAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. HIGH 15.  
SUNDAY NIGHT..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. LOW PLUS 5.  
MONDAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. HIGH 11.  
NORMALS FOR THE PERIOD..LOW PLUS 1. HIGH 13.  
  
FT. LIARD REGION INCLUDING NAHANNI BUTTE - SAMBAA K'E.  
WEDNESDAY NIGHT..CLOUDY PERIODS WITH 60 PERCENT CHANCE OF SHOWERS.  
 LOW 9.  
THURSDAY..SUNNY. HIGH 20.  
THURSDAY NIGHT..CLEAR. LOW 7.  
FRIDAY..SUNNY. HIGH 20.  
FRIDAY NIGHT..CLOUDY PERIODS. LOW 8.  
SATURDAY..A MIX OF SUN AND CLOUD. HIGH 18.  
SATURDAY NIGHT..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. LOW PLUS 5.  
SUNDAY..A MIX OF SUN AND CLOUD. HIGH 15.  
SUNDAY NIGHT..CLOUDY PERIODS. LOW PLUS 4.  
MONDAY..A MIX OF SUN AND CLOUD. HIGH 14.  
NORMALS FOR THE PERIOD..LOW PLUS 3. HIGH 15.  
  
YELLOWKNIFE REGION.  
WEDNESDAY NIGHT..CLEAR. LOW 13.  
THURSDAY..SUNNY. HIGH 16.  
THURSDAY NIGHT..CLEAR. LOW 8.  
FRIDAY..SUNNY. HIGH 16.  
FRIDAY NIGHT..CLEAR. LOW 10.  
SATURDAY..SUNNY. HIGH 17.  
SATURDAY NIGHT..CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS. LOW 10.  
SUNDAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. HIGH 14.  
SUNDAY NIGHT..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. LOW 7.  
MONDAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. HIGH 11.  
NORMALS FOR THE PERIOD..LOW PLUS 3. HIGH 9.  
  
NORTH SLAVE REGION INCLUDING WEKWEETI - WHATI - BEHCHOKO.  
WEDNESDAY NIGHT..CLEAR. LOW 12.  
THURSDAY..A MIX OF SUN AND CLOUD WITH 60 PERCENT CHANCE OF SHOWERS.  
 HIGH 17.  
THURSDAY NIGHT..CLEAR. LOW PLUS 5.  
FRIDAY..SUNNY. HIGH 18.  
FRIDAY NIGHT..CLEAR. LOW 9.  
SATURDAY..A MIX OF SUN AND CLOUD. HIGH 16.  
SATURDAY NIGHT..CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS. LOW 8.  
SUNDAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. HIGH 15.  
SUNDAY NIGHT..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. LOW 6.  
MONDAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. HIGH 11.  
NORMALS FOR THE PERIOD..LOW PLUS 2. HIGH 10.  
  
WRIGLEY REGION.  
WEDNESDAY NIGHT..INCREASING CLOUDINESS. LOW 9.  
THURSDAY..SUNNY. HIGH 20.  
THURSDAY NIGHT..CLEAR. LOW PLUS 4.  
FRIDAY..SUNNY. HIGH 18.  
FRIDAY NIGHT..CLOUDY PERIODS. LOW 9.  
SATURDAY..A MIX OF SUN AND CLOUD. HIGH 17.  
SATURDAY NIGHT..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. LOW 7.  
SUNDAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. HIGH 13.  
SUNDAY NIGHT..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. LOW PLUS 5.  
MONDAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. HIGH 10.  
NORMALS FOR THE PERIOD..LOW PLUS 2. HIGH 12.  
  
NORMAN WELLS - TULITA REGION.  
WEDNESDAY NIGHT..CLOUDY PERIODS. LOW 9.  
THURSDAY..A MIX OF SUN AND CLOUD. HIGH 18.  
THURSDAY NIGHT..CLEAR. LOW 6.  
FRIDAY..SUNNY. HIGH 19.  
FRIDAY NIGHT..CLEAR. LOW 8.  
SATURDAY..A MIX OF SUN AND CLOUD. HIGH 15.  
SATURDAY NIGHT..SHOWERS. LOW PLUS 5.  
SUNDAY..PERIODS OF RAIN. HIGH 9.  
SUNDAY NIGHT..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. LOW PLUS 3.  
MONDAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. HIGH 7.  
NORMALS FOR THE PERIOD..LOW PLUS 1. HIGH 10.  
  
FORT GOOD HOPE REGION.  
WEDNESDAY NIGHT..CLOUDY PERIODS. LOW 8.  
THURSDAY..A MIX OF SUN AND CLOUD. HIGH 15.  
THURSDAY NIGHT..CLEAR. LOW PLUS 4.  
FRIDAY..SUNNY. HIGH 16.  
FRIDAY NIGHT..INCREASING CLOUDINESS. LOW 8.  
SATURDAY..CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS. HIGH 12.  
SATURDAY NIGHT..CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS. LOW PLUS 4.  
SUNDAY..CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS. HIGH 8.  
SUNDAY NIGHT..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. LOW PLUS 3.  
MONDAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. HIGH 6.  
NORMALS FOR THE PERIOD..LOW PLUS 1. HIGH 9.  
  
DELINE.  
WEDNESDAY NIGHT..CLOUDY PERIODS WITH 30 PERCENT CHANCE OF SHOWERS.  
 LOW 11.  
THURSDAY..A MIX OF SUN AND CLOUD. HIGH 18.  
THURSDAY NIGHT..CLEAR. LOW PLUS 5.  
FRIDAY..SUNNY. HIGH 16.  
FRIDAY NIGHT..CLOUDY PERIODS. LOW 8.  
SATURDAY..A MIX OF SUN AND CLOUD. HIGH 16.  
SATURDAY NIGHT..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. LOW 7.  
SUNDAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. HIGH 11.  
SUNDAY NIGHT..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. LOW PLUS 5.  
MONDAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. HIGH 8.  
NORMALS FOR THE PERIOD..LOW PLUS 1. HIGH 10.  
  
COLVILLE LAKE.  
WEDNESDAY NIGHT..CLOUDY. LOW 10.  
THURSDAY..CLEARING. HIGH 15.  
THURSDAY NIGHT..CLEAR. LOW 7.  
FRIDAY..SUNNY. HIGH 16.  
FRIDAY NIGHT..INCREASING CLOUDINESS. LOW 8.  
SATURDAY..CLOUDY. HIGH 13.  
SATURDAY NIGHT..CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS. LOW PLUS 5.  
SUNDAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. HIGH 8.  
SUNDAY NIGHT..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. LOW PLUS 3.  
MONDAY..CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS. HIGH 6.  
NORMALS FOR THE PERIOD..LOW ZERO. HIGH 8.  
  
END  
 
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