FPCN51 CWNT 181625
EXTENDED FORECASTS FROM TUESDAY NIGHT 19 MAY TO SUNDAY 24 MAY FOR THE
GREAT SLAVE LAKE AND MACKENZIE RIVER AREAS OF THE NORTHWEST
TERRITORIES ISSUED BY ENVIRONMENT CANADA AT 10:30 A.M. MDT MONDAY 18
MAY 2026.
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 3:30 P.M. MDT.

THEBACHA REGION INCLUDING FT. SMITH - SALT RIVER RESERVE.
TUESDAY NIGHT..CLEAR. LOW 6.
WEDNESDAY..SUNNY. HIGH 20.
WEDNESDAY NIGHT..CLOUDY PERIODS. LOW PLUS 5.
THURSDAY..A MIX OF SUN AND CLOUD. HIGH 17.
THURSDAY NIGHT..CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS. LOW 7.
FRIDAY..A MIX OF SUN AND CLOUD WITH 30 PERCENT CHANCE OF SHOWERS.
 HIGH 18.
FRIDAY NIGHT..CLOUDY PERIODS. LOW 8.
SATURDAY..A MIX OF SUN AND CLOUD. HIGH 20.
SATURDAY NIGHT..CLOUDY PERIODS. LOW 8.
SUNDAY..A MIX OF SUN AND CLOUD. HIGH 18.
NORMALS FOR THE PERIOD..LOW PLUS 3. HIGH 16.

LUTSEL K'E REGION.
TUESDAY NIGHT..CLOUDY PERIODS. LOW PLUS 2.
WEDNESDAY..CLOUDY. HIGH 10.
WEDNESDAY NIGHT..CLOUDY PERIODS. LOW PLUS 1.
THURSDAY..A MIX OF SUN AND CLOUD. HIGH 9.
THURSDAY NIGHT..CLOUDY. LOW PLUS 1.
FRIDAY..RAIN. HIGH 12.
FRIDAY NIGHT..CLOUDY PERIODS. LOW PLUS 5.
SATURDAY..A MIX OF SUN AND CLOUD. HIGH 15.
SATURDAY NIGHT..CLOUDY PERIODS. LOW 6.
SUNDAY..A MIX OF SUN AND CLOUD. HIGH 14.
NORMALS FOR THE PERIOD..LOW ZERO. HIGH 11.

FT. RESOLUTION REGION INCLUDING HWY. 6.
TUESDAY NIGHT..CLOUDY PERIODS. LOW PLUS 4.
WEDNESDAY..A MIX OF SUN AND CLOUD. HIGH 12.
WEDNESDAY NIGHT..CLOUDY PERIODS. LOW PLUS 4.
THURSDAY..CLOUDY. HIGH 16.
THURSDAY NIGHT..RAIN. LOW 6.
FRIDAY..A MIX OF SUN AND CLOUD WITH 30 PERCENT CHANCE OF SHOWERS.
 HIGH 15.
FRIDAY NIGHT..CLOUDY PERIODS. LOW 6.
SATURDAY..A MIX OF SUN AND CLOUD. HIGH 17.
SATURDAY NIGHT..CLOUDY PERIODS. LOW 6.
SUNDAY..A MIX OF SUN AND CLOUD. HIGH 16.
NORMALS FOR THE PERIOD..LOW PLUS 2. HIGH 13.

HAY RIVER REGION INCLUDING ENTERPRISE.
TUESDAY NIGHT..CLOUDY. LOW 7.
WEDNESDAY..A MIX OF SUN AND CLOUD. HIGH 13.
WEDNESDAY NIGHT..CLEAR. LOW 6.
THURSDAY..CLOUDY. HIGH 15.
THURSDAY NIGHT..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. LOW 7.
FRIDAY..SUNNY. HIGH 15.
FRIDAY NIGHT..CLOUDY PERIODS. LOW 6.
SATURDAY..A MIX OF SUN AND CLOUD. HIGH 15.
SATURDAY NIGHT..CLOUDY PERIODS. LOW 6.
SUNDAY..A MIX OF SUN AND CLOUD. HIGH 14.
NORMALS FOR THE PERIOD..LOW PLUS 2. HIGH 13.

FT. PROVIDENCE REGION INCLUDING KAKISA - CHAN LAKE.
TUESDAY NIGHT..CLOUDY. LOW 10.
WEDNESDAY..CLEARING. HIGH 18.
WEDNESDAY NIGHT..CLEAR. LOW 7.
THURSDAY..CLOUDY. HIGH 15.
THURSDAY NIGHT..CLOUDY PERIODS WITH 30 PERCENT CHANCE OF SHOWERS. LOW
 PLUS 5.
FRIDAY..SUNNY. HIGH 18.
FRIDAY NIGHT..CLOUDY PERIODS. 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 16.
NORMALS FOR THE PERIOD..LOW PLUS 3. HIGH 14.

FT. SIMPSON REGION INCLUDING JEAN MARIE RIVER.
TUESDAY NIGHT..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. LOW 8.
WEDNESDAY..SUNNY. HIGH 20.
WEDNESDAY NIGHT..INCREASING CLOUDINESS. LOW 10.
THURSDAY..CLOUDY. HIGH 18.
THURSDAY NIGHT..CLOUDY PERIODS. LOW 6.
FRIDAY..SUNNY. HIGH 19.
FRIDAY NIGHT..CLOUDY PERIODS. LOW PLUS 5.
SATURDAY..A MIX OF SUN AND CLOUD. HIGH 17.
SATURDAY NIGHT..CLOUDY PERIODS. LOW PLUS 4.
SUNDAY..A MIX OF SUN AND CLOUD. HIGH 17.
NORMALS FOR THE PERIOD..LOW PLUS 4. HIGH 17.

FT. LIARD REGION INCLUDING NAHANNI BUTTE - SAMBAA K'E.
TUESDAY NIGHT..CLEARING. LOW 7.
WEDNESDAY..SUNNY. HIGH 23.
WEDNESDAY NIGHT..CLOUDY PERIODS. LOW 9.
THURSDAY..CLEARING. HIGH 20.
THURSDAY NIGHT..CLEAR. LOW 8.
FRIDAY..SUNNY. HIGH 21.
FRIDAY NIGHT..CLOUDY PERIODS. LOW PLUS 4.
SATURDAY..A MIX OF SUN AND CLOUD. HIGH 14.
SATURDAY NIGHT..CLOUDY PERIODS WITH 30 PERCENT CHANCE OF SHOWERS. LOW
 PLUS 4.
SUNDAY..A MIX OF SUN AND CLOUD. HIGH 17.
NORMALS FOR THE PERIOD..LOW PLUS 4. HIGH 18.

YELLOWKNIFE REGION.
TUESDAY NIGHT..CLOUDY. LOW 6.
WEDNESDAY..CLOUDY. HIGH 13.
WEDNESDAY NIGHT..CLEARING. LOW PLUS 4.
THURSDAY..CLOUDY. HIGH 13.
THURSDAY NIGHT..RAIN. LOW PLUS 3.
FRIDAY..PERIODS OF RAIN. HIGH 14.
FRIDAY NIGHT..CLOUDY PERIODS. LOW 7.
SATURDAY..A MIX OF SUN AND CLOUD. HIGH 15.
SATURDAY NIGHT..CLOUDY PERIODS. LOW 6.
SUNDAY..A MIX OF SUN AND CLOUD. HIGH 14.
NORMALS FOR THE PERIOD..LOW PLUS 2. HIGH 12.

NORTH SLAVE REGION INCLUDING WEKWEETI - WHATI - BEHCHOKO.
TUESDAY NIGHT..CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS. LOW PLUS 4.
WEDNESDAY..CLEARING. HIGH 14.
WEDNESDAY NIGHT..CLEAR. LOW PLUS 3.
THURSDAY..CLOUDY. HIGH 14.
THURSDAY NIGHT..PERIODS OF RAIN. LOW PLUS 3.
FRIDAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. HIGH 13.
FRIDAY NIGHT..CLOUDY PERIODS. LOW PLUS 4.
SATURDAY..A MIX OF SUN AND CLOUD. HIGH 14.
SATURDAY NIGHT..CLOUDY PERIODS. LOW PLUS 4.
SUNDAY..A MIX OF SUN AND CLOUD. HIGH 14.
NORMALS FOR THE PERIOD..LOW PLUS 2. HIGH 12.

WRIGLEY REGION.
TUESDAY NIGHT..CLOUDY PERIODS. LOW PLUS 5.
WEDNESDAY..SUNNY. HIGH 20.
WEDNESDAY NIGHT..INCREASING CLOUDINESS. LOW 8.
THURSDAY..CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS. HIGH 17.
THURSDAY NIGHT..CLOUDY PERIODS. LOW 6.
FRIDAY..A MIX OF SUN AND CLOUD. HIGH 17.
FRIDAY NIGHT..CLOUDY PERIODS. LOW PLUS 3.
SATURDAY..A MIX OF SUN AND CLOUD. HIGH 13.
SATURDAY NIGHT..CLOUDY PERIODS. LOW PLUS 3.
SUNDAY..A MIX OF SUN AND CLOUD. HIGH 14.
NORMALS FOR THE PERIOD..LOW PLUS 3. HIGH 15.

NORMAN WELLS - TULITA REGION.
TUESDAY NIGHT..CLEAR. LOW PLUS 5.
WEDNESDAY..SUNNY. HIGH 20.
WEDNESDAY NIGHT..CLOUDY PERIODS. LOW 9.
THURSDAY..SHOWERS. HIGH 14.
THURSDAY NIGHT..SHOWERS. LOW 6.
FRIDAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. HIGH 14.
FRIDAY NIGHT..CLOUDY PERIODS. LOW PLUS 5.
SATURDAY..A MIX OF SUN AND CLOUD. HIGH 12.
SATURDAY NIGHT..CLOUDY PERIODS. LOW PLUS 4.
SUNDAY..A MIX OF SUN AND CLOUD. HIGH 13.
NORMALS FOR THE PERIOD..LOW PLUS 3. HIGH 14.

FORT GOOD HOPE REGION.
TUESDAY NIGHT..CLEAR. LOW PLUS 5.
WEDNESDAY..SUNNY. HIGH 21.
WEDNESDAY NIGHT..CLOUDY PERIODS. LOW 8.
THURSDAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. HIGH 14.
THURSDAY NIGHT..RAIN. LOW PLUS 5.
FRIDAY..CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS. HIGH 13.
FRIDAY NIGHT..CLOUDY PERIODS. LOW PLUS 1.
SATURDAY..A MIX OF SUN AND CLOUD. HIGH 8.
SATURDAY NIGHT..CLOUDY PERIODS. LOW ZERO.
SUNDAY..A MIX OF SUN AND CLOUD. HIGH 9.
NORMALS FOR THE PERIOD..LOW PLUS 1. HIGH 12.

DELINE.
TUESDAY NIGHT..CLEAR. LOW MINUS 2.
WEDNESDAY..SUNNY. HIGH 12.
WEDNESDAY NIGHT..INCREASING CLOUDINESS. LOW 6.
THURSDAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. HIGH 11.
THURSDAY NIGHT..PERIODS OF RAIN. LOW PLUS 4.
FRIDAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. HIGH 10.
FRIDAY NIGHT..CLOUDY PERIODS. LOW PLUS 2.
SATURDAY..A MIX OF SUN AND CLOUD. HIGH 10.
SATURDAY NIGHT..CLOUDY PERIODS. LOW PLUS 2.
SUNDAY..A MIX OF SUN AND CLOUD. HIGH 11.
NORMALS FOR THE PERIOD..LOW PLUS 1. HIGH 12.

COLVILLE LAKE.
TUESDAY NIGHT..CLEARING. LOW MINUS 2.
WEDNESDAY..SUNNY. HIGH 11.
WEDNESDAY NIGHT..CLEAR. LOW PLUS 4.
THURSDAY..CLOUDY. HIGH 11.
THURSDAY NIGHT..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. LOW PLUS 4.
FRIDAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. HIGH 9.
FRIDAY NIGHT..CLOUDY PERIODS. LOW ZERO.
SATURDAY..A MIX OF SUN AND CLOUD. HIGH 6.
SATURDAY NIGHT..CLOUDY PERIODS. LOW ZERO.
SUNDAY..A MIX OF SUN AND CLOUD. HIGH 7.
NORMALS FOR THE PERIOD..LOW MINUS 1. HIGH 8.

END