617   
FPCN53 CWWG 211024  
EXTENDED FORECASTS FROM SATURDAY NIGHT 22 AUGUST TO THURSDAY 27  
AUGUST FOR SOUTHERN ALBERTA AND THE MOUNTAIN PARKS ISSUED BY  
ENVIRONMENT CANADA AT 4:30 A.M. MDT FRIDAY 21 AUGUST 2026.  
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 10:30 A.M. MDT.  
  
CITY OF CALGARY.  
SATURDAY NIGHT..CLOUDY PERIODS. LOW 17.  
SUNDAY..A MIX OF SUN AND CLOUD WITH 60 PERCENT CHANCE OF SHOWERS.  
 HIGH 28.  
SUNDAY NIGHT..CLOUDY PERIODS WITH 60 PERCENT CHANCE OF SHOWERS.  
 LOW 12.  
MONDAY..SUNNY. HIGH 23.  
MONDAY NIGHT..CLEAR. LOW 11.  
TUESDAY..SUNNY. HIGH 25.  
TUESDAY NIGHT..CLEAR. LOW 10.  
WEDNESDAY..SUNNY. HIGH 26.  
WEDNESDAY NIGHT..CLEAR. LOW 10.  
THURSDAY..SUNNY. HIGH 24.  
NORMALS FOR THE PERIOD..LOW 8. HIGH 22.  
  
AIRDRIE - COCHRANE - OLDS - SUNDRE.  
SATURDAY NIGHT..CLOUDY PERIODS. LOW 13.  
SUNDAY..A MIX OF SUN AND CLOUD WITH 60 PERCENT CHANCE OF SHOWERS.  
 HIGH 26.  
SUNDAY NIGHT..CLOUDY PERIODS WITH 60 PERCENT CHANCE OF SHOWERS.  
 LOW 12.  
MONDAY..SUNNY. HIGH 22.  
MONDAY NIGHT..CLEAR. LOW 7.  
TUESDAY..SUNNY. HIGH 25.  
TUESDAY NIGHT..CLEAR. LOW 8.  
WEDNESDAY..A MIX OF SUN AND CLOUD. HIGH 25.  
WEDNESDAY NIGHT..CLOUDY PERIODS. LOW 8.  
THURSDAY..A MIX OF SUN AND CLOUD. HIGH 23.  
NORMALS FOR THE PERIOD..LOW 7. HIGH 21.  
  
OKOTOKS - HIGH RIVER - CLARESHOLM.  
SATURDAY NIGHT..CLOUDY PERIODS. LOW 16.  
SUNDAY..SUNNY. HIGH 27.  
SUNDAY NIGHT..CLEAR. LOW 9.  
MONDAY..SUNNY. HIGH 24.  
MONDAY NIGHT..CLEAR. LOW 9.  
TUESDAY..SUNNY. HIGH 25.  
TUESDAY NIGHT..CLEAR. LOW 10.  
WEDNESDAY..SUNNY. HIGH 27.  
WEDNESDAY NIGHT..CLEAR. LOW 10.  
THURSDAY..SUNNY. HIGH 24.  
NORMALS FOR THE PERIOD..LOW 7. HIGH 21.  
  
DRUMHELLER - THREE HILLS.  
SATURDAY NIGHT..CLEAR. LOW 13.  
SUNDAY..A MIX OF SUN AND CLOUD WITH 40 PERCENT CHANCE OF SHOWERS.  
 HIGH 29.  
SUNDAY NIGHT..CLOUDY PERIODS WITH 40 PERCENT CHANCE OF SHOWERS.  
 LOW 12.  
MONDAY..SUNNY. HIGH 25.  
MONDAY NIGHT..CLEAR. LOW 9.  
TUESDAY..SUNNY. HIGH 28.  
TUESDAY NIGHT..CLEAR. LOW 10.  
WEDNESDAY..SUNNY. HIGH 27.  
WEDNESDAY NIGHT..CLEAR. LOW 10.  
THURSDAY..SUNNY. HIGH 25.  
NORMALS FOR THE PERIOD..LOW 8. HIGH 23.  
  
BROOKS - STRATHMORE - VULCAN.  
SATURDAY NIGHT..CLEAR. LOW 13.  
SUNDAY..SUNNY. HIGH 32.  
SUNDAY NIGHT..CLEAR. LOW 11.  
MONDAY..SUNNY. HIGH 25.  
MONDAY NIGHT..CLEAR. LOW 9.  
TUESDAY..SUNNY. HIGH 27.  
TUESDAY NIGHT..CLEAR. LOW 11.  
WEDNESDAY..SUNNY. HIGH 29.  
WEDNESDAY NIGHT..CLEAR. LOW 11.  
THURSDAY..SUNNY. HIGH 27.  
NORMALS FOR THE PERIOD..LOW 9. HIGH 24.  
  
KANANASKIS - CANMORE.  
SATURDAY NIGHT..CLOUDY PERIODS. LOW 14.  
SUNDAY..A MIX OF SUN AND CLOUD WITH 30 PERCENT CHANCE OF SHOWERS.  
 HIGH 25.  
SUNDAY NIGHT..CLEAR. LOW 10.  
MONDAY..SUNNY. HIGH 23.  
MONDAY NIGHT..CLEAR. LOW 9.  
TUESDAY..SUNNY. HIGH 25.  
TUESDAY NIGHT..CLEAR. LOW 6.  
WEDNESDAY..SUNNY. HIGH 25.  
WEDNESDAY NIGHT..CLOUDY PERIODS. LOW 7.  
THURSDAY..A MIX OF SUN AND CLOUD. HIGH 23.  
NORMALS FOR THE PERIOD..LOW 6. HIGH 21.  
  
BANFF NATIONAL PARK.  
SATURDAY NIGHT..CLEAR. LOW 11.  
SUNDAY..SUNNY. HIGH 22.  
SUNDAY NIGHT..CLOUDY PERIODS. LOW 8.  
MONDAY..SUNNY. HIGH 23.  
MONDAY NIGHT..CLEAR. LOW 8.  
TUESDAY..SUNNY. HIGH 25.  
TUESDAY NIGHT..CLEAR. LOW PLUS 4.  
WEDNESDAY..SUNNY. HIGH 25.  
WEDNESDAY NIGHT..CLOUDY PERIODS. LOW PLUS 5.  
THURSDAY..A MIX OF SUN AND CLOUD. HIGH 22.  
NORMALS FOR THE PERIOD..LOW PLUS 5. HIGH 20.  
  
HIGHWAY 93 - LAKE LOUISE TO SASKATCHEWAN RIVER CROSSING.  
SATURDAY NIGHT..CLEAR. LOW 11.  
SUNDAY..SUNNY. HIGH 22.  
SUNDAY NIGHT..CLOUDY PERIODS. LOW 8.  
MONDAY..SUNNY. HIGH 23.  
MONDAY NIGHT..CLEAR. LOW 8.  
TUESDAY..SUNNY. HIGH 25.  
TUESDAY NIGHT..CLEAR. LOW PLUS 4.  
WEDNESDAY..SUNNY. HIGH 25.  
WEDNESDAY NIGHT..CLOUDY PERIODS. LOW PLUS 5.  
THURSDAY..A MIX OF SUN AND CLOUD. HIGH 22.  
NORMALS FOR THE PERIOD..LOW PLUS 5. HIGH 20.  
  
HIGHWAY 93 - JASPER TO SASKATCHEWAN RIVER CROSSING.  
SATURDAY NIGHT..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. LOW 13.  
SUNDAY..CLOUDY WITH 70 PERCENT CHANCE OF SHOWERS. HIGH 20.  
SUNDAY NIGHT..CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS. LOW 12.  
MONDAY..CLEARING. HIGH 25.  
MONDAY NIGHT..CLEAR. LOW 9.  
TUESDAY..SUNNY. HIGH 28.  
TUESDAY NIGHT..CLEAR. LOW 7.  
WEDNESDAY..INCREASING CLOUDINESS. HIGH 22.  
WEDNESDAY NIGHT..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. LOW 8.  
THURSDAY..A MIX OF SUN AND CLOUD. HIGH 21.  
NORMALS FOR THE PERIOD..LOW 6. HIGH 21.  
  
JASPER NATIONAL PARK.  
SATURDAY NIGHT..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. LOW 13.  
SUNDAY..CLOUDY WITH 70 PERCENT CHANCE OF SHOWERS. HIGH 20.  
SUNDAY NIGHT..CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS. LOW 12.  
MONDAY..CLEARING. HIGH 25.  
MONDAY NIGHT..CLEAR. LOW 9.  
TUESDAY..SUNNY. HIGH 28.  
TUESDAY NIGHT..CLEAR. LOW 7.  
WEDNESDAY..INCREASING CLOUDINESS. HIGH 22.  
WEDNESDAY NIGHT..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. LOW 8.  
THURSDAY..A MIX OF SUN AND CLOUD. HIGH 21.  
NORMALS FOR THE PERIOD..LOW 6. HIGH 21.  
  
NORDEGG - FORESTRY TRUNK ROAD HIGHWAY 734.  
SATURDAY NIGHT..CLEAR. LOW 11.  
SUNDAY..A MIX OF SUN AND CLOUD WITH 60 PERCENT CHANCE OF SHOWERS.  
 HIGH 21.  
SUNDAY NIGHT..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. LOW 10.  
MONDAY..SUNNY. HIGH 20.  
MONDAY NIGHT..CLEAR. LOW 8.  
TUESDAY..SUNNY. HIGH 24.  
TUESDAY NIGHT..CLOUDY PERIODS WITH 30 PERCENT CHANCE OF SHOWERS.  
 LOW 7.  
WEDNESDAY..A MIX OF SUN AND CLOUD. HIGH 24.  
WEDNESDAY NIGHT..CLOUDY PERIODS WITH 60 PERCENT CHANCE OF SHOWERS.  
 LOW 7.  
THURSDAY..A MIX OF SUN AND CLOUD. HIGH 20.  
NORMALS FOR THE PERIOD..LOW PLUS 3. HIGH 19.  
  
ROCKY MOUNTAIN HOUSE - CAROLINE.  
SATURDAY NIGHT..CLEAR. LOW 11.  
SUNDAY..A MIX OF SUN AND CLOUD WITH 60 PERCENT CHANCE OF SHOWERS.  
 HIGH 25.  
SUNDAY NIGHT..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. LOW 11.  
MONDAY..CLEARING. HIGH 23.  
MONDAY NIGHT..CLEAR. LOW 7.  
TUESDAY..SUNNY. HIGH 24.  
TUESDAY NIGHT..CLOUDY PERIODS. LOW 8.  
WEDNESDAY..A MIX OF SUN AND CLOUD. HIGH 23.  
WEDNESDAY NIGHT..CLOUDY PERIODS WITH 30 PERCENT CHANCE OF SHOWERS.  
 LOW 8.  
THURSDAY..A MIX OF SUN AND CLOUD. HIGH 22.  
NORMALS FOR THE PERIOD..LOW 6. HIGH 21.  
  
RED DEER - PONOKA - INNISFAIL - STETTLER.  
SATURDAY NIGHT..CLEAR. LOW 11.  
SUNDAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. HIGH 25.  
SUNDAY NIGHT..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. LOW 12.  
MONDAY..CLEARING. HIGH 23.  
MONDAY NIGHT..CLEAR. LOW 9.  
TUESDAY..SUNNY. HIGH 25.  
TUESDAY NIGHT..CLOUDY PERIODS. LOW 9.  
WEDNESDAY..A MIX OF SUN AND CLOUD. HIGH 25.  
WEDNESDAY NIGHT..CLOUDY PERIODS. LOW 9.  
THURSDAY..A MIX OF SUN AND CLOUD. HIGH 23.  
NORMALS FOR THE PERIOD..LOW 8. HIGH 22.  
  
HANNA - CORONATION - OYEN.  
SATURDAY NIGHT..CLEAR. LOW 12.  
SUNDAY..A MIX OF SUN AND CLOUD WITH 60 PERCENT CHANCE OF SHOWERS.  
 HIGH 29.  
SUNDAY NIGHT..CLOUDY PERIODS WITH 60 PERCENT CHANCE OF SHOWERS.  
 LOW 11.  
MONDAY..SUNNY. HIGH 22.  
MONDAY NIGHT..CLEAR. LOW 8.  
TUESDAY..SUNNY. HIGH 25.  
TUESDAY NIGHT..CLEAR. LOW 10.  
WEDNESDAY..SUNNY. HIGH 27.  
WEDNESDAY NIGHT..CLOUDY PERIODS. LOW 10.  
THURSDAY..A MIX OF SUN AND CLOUD. HIGH 26.  
NORMALS FOR THE PERIOD..LOW 8. HIGH 23.  
  
MEDICINE HAT - BOW ISLAND - SUFFIELD.  
SATURDAY NIGHT..CLOUDY PERIODS. LOW 18.  
SUNDAY..A MIX OF SUN AND CLOUD. HIGH 33.  
SUNDAY NIGHT..CLEAR. LOW 13.  
MONDAY..SUNNY. HIGH 25.  
MONDAY NIGHT..CLEAR. LOW 11.  
TUESDAY..SUNNY. HIGH 27.  
TUESDAY NIGHT..CLEAR. LOW 12.  
WEDNESDAY..SUNNY. HIGH 31.  
WEDNESDAY NIGHT..CLEAR. LOW 12.  
THURSDAY..SUNNY. HIGH 29.  
NORMALS FOR THE PERIOD..LOW 10. HIGH 25.  
  
CYPRESS HILLS PROVINCIAL PARK - FOREMOST.  
SATURDAY NIGHT..CLOUDY PERIODS WITH 30 PERCENT CHANCE OF SHOWERS.  
 LOW 18.  
SUNDAY..A MIX OF SUN AND CLOUD WITH 30 PERCENT CHANCE OF SHOWERS.  
 HIGH 28.  
SUNDAY NIGHT..CLOUDY PERIODS WITH 60 PERCENT CHANCE OF SHOWERS.  
 LOW 11.  
MONDAY..SUNNY. HIGH 26.  
MONDAY NIGHT..CLEAR. LOW 11.  
TUESDAY..SUNNY. HIGH 27.  
TUESDAY NIGHT..CLEAR. LOW 12.  
WEDNESDAY..SUNNY. HIGH 30.  
WEDNESDAY NIGHT..CLEAR. LOW 12.  
THURSDAY..SUNNY. HIGH 29.  
NORMALS FOR THE PERIOD..LOW 10. HIGH 26.  
  
LETHBRIDGE - TABER - MILK RIVER.  
SATURDAY NIGHT..CLEAR. LOW 13.  
SUNDAY..SUNNY. HIGH 30.  
SUNDAY NIGHT..CLEAR. LOW 12.  
MONDAY..SUNNY. HIGH 25.  
MONDAY NIGHT..CLEAR. LOW 9.  
TUESDAY..SUNNY. HIGH 28.  
TUESDAY NIGHT..CLEAR. LOW 10.  
WEDNESDAY..SUNNY. HIGH 29.  
WEDNESDAY NIGHT..CLEAR. LOW 10.  
THURSDAY..SUNNY. HIGH 28.  
NORMALS FOR THE PERIOD..LOW 9. HIGH 25.  
  
CARDSTON - FORT MACLEOD - MAGRATH.  
SATURDAY NIGHT..CLEAR. LOW 15.  
SUNDAY..SUNNY. HIGH 28.  
SUNDAY NIGHT..CLEAR. LOW 13.  
MONDAY..SUNNY. HIGH 25.  
MONDAY NIGHT..CLEAR. LOW 9.  
TUESDAY..SUNNY. HIGH 28.  
TUESDAY NIGHT..CLEAR. LOW 11.  
WEDNESDAY..SUNNY. HIGH 28.  
WEDNESDAY NIGHT..CLEAR. LOW 10.  
THURSDAY..SUNNY. HIGH 27.  
NORMALS FOR THE PERIOD..LOW 8. HIGH 24.  
  
CROWSNEST PASS - PINCHER CREEK - WATERTON LAKES NAT. PARK.  
SATURDAY NIGHT..CLEAR. LOW 13.  
SUNDAY..SUNNY. HIGH 26.  
SUNDAY NIGHT..CLEAR. LOW 12.  
MONDAY..SUNNY. HIGH 24.  
MONDAY NIGHT..CLEAR. LOW 8.  
TUESDAY..SUNNY. HIGH 26.  
TUESDAY NIGHT..CLEAR. LOW 11.  
WEDNESDAY..SUNNY. HIGH 27.  
WEDNESDAY NIGHT..CLEAR. LOW 10.  
THURSDAY..SUNNY. HIGH 27.  
NORMALS FOR THE PERIOD..LOW 7. HIGH 22.  
  
END  
 
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