217
FPCN15 CWWG 182130
FORECASTS FOR SOUTHERN ALBERTA AND THE MOUNTAIN PARKS ISSUED BY
ENVIRONMENT CANADA AT 4:00 P.M. MDT FRIDAY 18 SEPTEMBER 2026 FOR
TONIGHT SATURDAY AND SATURDAY NIGHT.
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 5:00 A.M. MDT SATURDAY.
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MAJOR REFERENCE ELEVATIONS:
BANFF: 1384 METRES.
LAKE LOUISE: 1750 METRES.
HIGHWAY 93 - BOW SUMMIT: 2068 METRES.
HIGHWAY 93 - SUNWAPTA PASS: 2034 METRES.
COLUMBIA ICEFIELDS VISITORS CENTRE: 2006 METRES.
JASPER: 1061 METRES.
CANMORE: 1350 METRES.
HWY 40 - HIGHWOOD PASS: 2206 METRES.
PINCHER CREEK: 1030 METRES.
WATERTON: 1280 METRES.
CROWSNEST PASS: 1300 METRES.
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CITY OF CALGARY.
TONIGHT..CLEAR. LOW PLUS 5.
SATURDAY..SUNNY. WIND BECOMING SOUTH 20 KM/H GUSTING TO 40 IN THE
AFTERNOON. HIGH 23. UV INDEX 4 OR MODERATE.
SATURDAY NIGHT..CLEAR. WIND SOUTH 20 KM/H GUSTING TO 40 BECOMING
LIGHT IN THE EVENING. LOW 9.
OKOTOKS - HIGH RIVER - CLARESHOLM.
TONIGHT..CLEAR. LOW PLUS 3 WITH RISK OF FROST.
SATURDAY..SUNNY. WIND BECOMING SOUTH 20 KM/H GUSTING TO 40 IN THE
AFTERNOON. HIGH 21. UV INDEX 5 OR MODERATE.
SATURDAY NIGHT..CLEAR. WIND SOUTH 20 KM/H GUSTING TO 40 BECOMING
LIGHT IN THE EVENING. LOW PLUS 4 WITH RISK OF FROST.
AIRDRIE - COCHRANE - OLDS - SUNDRE.
TONIGHT..CLEAR. LOW ZERO WITH PATCHY FROST.
SATURDAY..SUNNY. WIND BECOMING SOUTH 20 KM/H GUSTING TO 40 IN THE
AFTERNOON. HIGH 24. UV INDEX 4 OR MODERATE.
SATURDAY NIGHT..CLEAR. WIND SOUTH 20 KM/H GUSTING TO 40 BECOMING
LIGHT IN THE EVENING. LOW PLUS 1 WITH RISK OF FROST.
DRUMHELLER - THREE HILLS.
TONIGHT..CLEAR. LOW PLUS 4 WITH RISK OF FROST.
SATURDAY..SUNNY. WIND BECOMING SOUTHEAST 20 KM/H GUSTING TO 40 IN THE
AFTERNOON. HIGH 25. UV INDEX 4 OR MODERATE.
SATURDAY NIGHT..A FEW CLOUDS. WIND SOUTHEAST 20 KM/H GUSTING TO 40
BECOMING LIGHT OVERNIGHT. LOW 8.
BROOKS - STRATHMORE - VULCAN.
TONIGHT..CLEAR. LOW PLUS 4 WITH RISK OF FROST.
SATURDAY..SUNNY. WIND BECOMING SOUTHEAST 20 KM/H GUSTING TO 40 IN THE
AFTERNOON. HIGH 26. UV INDEX 5 OR MODERATE.
SATURDAY NIGHT..A FEW CLOUDS. WIND SOUTHEAST 20 KM/H GUSTING TO 40
BECOMING LIGHT IN THE EVENING. LOW 7.
KANANASKIS - CANMORE.
TONIGHT..CLEAR. LOW PLUS 5.
SATURDAY..MAINLY SUNNY. HIGH 23. UV INDEX 4 OR MODERATE.
SATURDAY NIGHT..CLEAR. LOW 8.
BANFF NATIONAL PARK
HIGHWAY 93 - LAKE LOUISE TO SASKATCHEWAN RIVER CROSSING.
TONIGHT..CLEAR. LOW PLUS 2.
SATURDAY..SUNNY. BECOMING A MIX OF SUN AND CLOUD IN THE MORNING.
HIGH 22. UV INDEX 4 OR MODERATE.
SATURDAY NIGHT..CLEAR. LOW PLUS 3.
HIGHWAY 93 - JASPER TO SASKATCHEWAN RIVER CROSSING
JASPER NATIONAL PARK.
TONIGHT..CLEAR. LOW PLUS 2.
SATURDAY..A MIX OF SUN AND CLOUD. HIGH 24. UV INDEX 3 OR MODERATE.
SATURDAY NIGHT..CLEAR. LOW PLUS 2.
NORDEGG - FORESTRY TRUNK ROAD HIGHWAY 734.
TONIGHT..CLEAR. LOW PLUS 3.
SATURDAY..SUNNY. BECOMING A MIX OF SUN AND CLOUD IN THE MORNING.
HIGH 23. UV INDEX 4 OR MODERATE.
SATURDAY NIGHT..CLEARING LATE IN THE EVENING. LOW PLUS 4.
ROCKY MOUNTAIN HOUSE - CAROLINE.
TONIGHT..CLEAR. LOW ZERO WITH PATCHY FROST.
SATURDAY..SUNNY. BECOMING A MIX OF SUN AND CLOUD IN THE MORNING.
HIGH 23. UV INDEX 4 OR MODERATE.
SATURDAY NIGHT..CLEARING LATE IN THE EVENING. LOW PLUS 2 WITH RISK OF
FROST.
RED DEER - PONOKA - INNISFAIL - STETTLER.
TONIGHT..CLEAR. LOW PLUS 3 WITH RISK OF FROST.
SATURDAY..SUNNY. WIND BECOMING SOUTH 30 KM/H GUSTING TO 50 IN THE
AFTERNOON. HIGH 24. UV INDEX 4 OR MODERATE.
SATURDAY NIGHT..CLEAR. WIND SOUTH 30 KM/H GUSTING TO 50 BECOMING
LIGHT OVERNIGHT. LOW PLUS 5.
HANNA - CORONATION - OYEN.
TONIGHT..CLEAR. LOW PLUS 4 WITH RISK OF FROST.
SATURDAY..SUNNY. WIND BECOMING SOUTHEAST 20 KM/H GUSTING TO 40 IN THE
AFTERNOON. HIGH 24. UV INDEX 4 OR MODERATE.
SATURDAY NIGHT..CLEAR. WIND SOUTHEAST 20 KM/H GUSTING TO 40 BECOMING
LIGHT OVERNIGHT. LOW 6.
MEDICINE HAT - BOW ISLAND - SUFFIELD.
TONIGHT..CLEAR. LOW PLUS 4 WITH RISK OF FROST.
SATURDAY..SUNNY. WIND BECOMING SOUTHEAST 20 KM/H GUSTING TO 40 IN THE
AFTERNOON. HIGH 25. UV INDEX 5 OR MODERATE.
SATURDAY NIGHT..A FEW CLOUDS. WIND SOUTHEAST 20 KM/H GUSTING TO 40
BECOMING LIGHT IN THE EVENING. LOW 9.
CYPRESS HILLS PROVINCIAL PARK - FOREMOST.
TONIGHT..CLEAR. LOW PLUS 4 WITH RISK OF FROST.
SATURDAY..SUNNY. BECOMING A MIX OF SUN AND CLOUD IN THE AFTERNOON.
WIND BECOMING SOUTHEAST 20 KM/H GUSTING TO 40 IN THE AFTERNOON.
HIGH 22. UV INDEX 5 OR MODERATE.
SATURDAY NIGHT..PARTLY CLOUDY. CLEARING BEFORE MORNING. WIND
SOUTHEAST 20 KM/H GUSTING TO 40 BECOMING LIGHT IN THE EVENING.
LOW 7.
LETHBRIDGE - TABER - MILK RIVER.
TONIGHT..CLEAR. LOW PLUS 3 WITH RISK OF FROST.
SATURDAY..SUNNY. HIGH 24. UV INDEX 5 OR MODERATE.
SATURDAY NIGHT..A FEW CLOUDS. LOW 7.
CARDSTON - FORT MACLEOD - MAGRATH.
TONIGHT..CLEAR. LOW PLUS 3 WITH RISK OF FROST.
SATURDAY..SUNNY. HIGH 23. UV INDEX 5 OR MODERATE.
SATURDAY NIGHT..CLEAR. LOW 7.
CROWSNEST PASS - PINCHER CREEK - WATERTON LAKES NAT. PARK.
TONIGHT..CLEAR. LOW PLUS 3.
SATURDAY..SUNNY. HIGH 21. UV INDEX 5 OR MODERATE.
SATURDAY NIGHT..CLEAR. LOW 7.
END
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