168
FPCN15 CWWG 182130
FORECASTS FOR SOUTHERN ALBERTA AND THE MOUNTAIN PARKS ISSUED BY
ENVIRONMENT CANADA AT 4:00 P.M. MDT TUESDAY 18 AUGUST 2026 FOR
TONIGHT WEDNESDAY AND WEDNESDAY NIGHT.
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 5:00 A.M. MDT
WEDNESDAY.
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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..PARTLY CLOUDY. BECOMING CLEAR NEAR MIDNIGHT. LOCAL SMOKE
THIS EVENING. WIND WEST 20 KM/H GUSTING TO 40 BECOMING LIGHT THIS
EVENING. LOW 11.
WEDNESDAY..SUNNY. HIGH 26. HUMIDEX 28. UV INDEX 7 OR HIGH.
WEDNESDAY NIGHT..PARTLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS
OVERNIGHT. LOW 13.
OKOTOKS - HIGH RIVER - CLARESHOLM.
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS THIS EVENING
THEN CLEAR. RISK OF A THUNDERSTORM THIS EVENING. LOCAL SMOKE. WIND
WEST 20 KM/H GUSTING TO 40 BECOMING LIGHT THIS EVENING. LOW 10.
WEDNESDAY..SUNNY. BECOMING A MIX OF SUN AND CLOUD IN THE AFTERNOON.
LOCAL SMOKE. HIGH 26. HUMIDEX 29. UV INDEX 7 OR HIGH.
WEDNESDAY NIGHT..PARTLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS
OVERNIGHT. LOW 11.
AIRDRIE - COCHRANE - OLDS - SUNDRE.
TONIGHT..PARTLY CLOUDY. BECOMING CLEAR THIS EVENING. LOCAL SMOKE THIS
EVENING. WIND WEST 20 KM/H GUSTING TO 40 BECOMING LIGHT THIS
EVENING. LOW 6.
WEDNESDAY..SUNNY. HIGH 24. HUMIDEX 25. UV INDEX 7 OR HIGH.
WEDNESDAY NIGHT..PARTLY CLOUDY. LOW 7.
DRUMHELLER - THREE HILLS.
TONIGHT..A FEW CLOUDS. WIND SOUTHWEST 20 KM/H GUSTING TO 40 BECOMING
LIGHT THIS EVENING. LOW 11.
WEDNESDAY..SUNNY. WIND BECOMING NORTHWEST 20 KM/H GUSTING TO 40 NEAR
NOON. HIGH 29. HUMIDEX 31. UV INDEX 7 OR HIGH.
WEDNESDAY NIGHT..MAINLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS
OVERNIGHT. WIND NORTHWEST 20 KM/H GUSTING TO 40 BECOMING LIGHT IN
THE EVENING. LOW 13.
BROOKS - STRATHMORE - VULCAN.
TONIGHT..CLEAR. BECOMING PARTLY CLOUDY THIS EVENING. LOCAL SMOKE THIS
EVENING. WIND WEST 20 KM/H GUSTING TO 40 BECOMING LIGHT THIS
EVENING. LOW 11.
WEDNESDAY..MAINLY SUNNY. HIGH 29. HUMIDEX 31. UV INDEX 7 OR HIGH.
WEDNESDAY NIGHT..PARTLY CLOUDY. LOW 11.
KANANASKIS - CANMORE.
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS THIS EVENING
THEN CLEAR. RISK OF A THUNDERSTORM THIS EVENING. LOCAL SMOKE. WIND
WEST 20 KM/H GUSTING TO 40 BECOMING LIGHT THIS EVENING. LOW 11.
WEDNESDAY..SUNNY. BECOMING A MIX OF SUN AND CLOUD IN THE AFTERNOON.
RISK OF A THUNDERSTORM LATE IN THE AFTERNOON. LOCAL SMOKE. HIGH 27.
UV INDEX 7 OR HIGH.
WEDNESDAY NIGHT..MAINLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS
OVERNIGHT. RISK OF A THUNDERSTORM EARLY IN THE EVENING. LOW 8.
BANFF NATIONAL PARK
HIGHWAY 93 - LAKE LOUISE TO SASKATCHEWAN RIVER CROSSING.
TONIGHT..PARTLY CLOUDY. CLEARING THIS EVENING. LOCAL SMOKE. WIND
SOUTHWEST 20 KM/H GUSTING TO 40 BECOMING LIGHT THIS EVENING. LOW 8.
WEDNESDAY..SUNNY. LOCAL SMOKE. HIGH 26. UV INDEX 7 OR HIGH.
WEDNESDAY NIGHT..PARTLY CLOUDY. LOW 9.
HIGHWAY 93 - JASPER TO SASKATCHEWAN RIVER CROSSING
JASPER NATIONAL PARK.
TONIGHT..PARTLY CLOUDY. BECOMING CLEAR THIS EVENING. WIND SOUTHWEST
20 KM/H GUSTING TO 40 BECOMING LIGHT THIS EVENING. LOW 9.
WEDNESDAY..SUNNY. HIGH 28. UV INDEX 6 OR HIGH.
WEDNESDAY NIGHT..CLEAR. BECOMING PARTLY CLOUDY IN THE EVENING. LOW 7.
NORDEGG - FORESTRY TRUNK ROAD HIGHWAY 734.
TONIGHT..A FEW CLOUDS. LOW 6.
WEDNESDAY..A MIX OF SUN AND CLOUD. RISK OF A THUNDERSTORM LATE IN THE
AFTERNOON. HIGH 22. UV INDEX 6 OR HIGH.
WEDNESDAY NIGHT..PARTLY CLOUDY. RISK OF A THUNDERSTORM EARLY IN THE
EVENING. LOW 7.
ROCKY MOUNTAIN HOUSE - CAROLINE.
TONIGHT..PARTLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS EARLY THIS
EVENING. WIND NORTHWEST 20 KM/H GUSTING TO 40 BECOMING LIGHT THIS
EVENING. LOW 8.
WEDNESDAY..SUNNY. WIND BECOMING NORTHWEST 20 KM/H GUSTING TO 40 NEAR
NOON. HIGH 25. HUMIDEX 27. UV INDEX 6 OR HIGH.
WEDNESDAY NIGHT..PARTLY CLOUDY. WIND NORTHWEST 20 KM/H GUSTING TO 40
BECOMING LIGHT IN THE EVENING. LOW 9.
RED DEER - PONOKA - INNISFAIL - STETTLER.
TONIGHT..PARTLY CLOUDY. CLEARING BEFORE MORNING. WIND SOUTHWEST
20 KM/H GUSTING TO 40 BECOMING NORTH 20 GUSTING TO 40 THEN LIGHT
THIS EVENING. LOW 9.
WEDNESDAY..SUNNY. WIND BECOMING NORTHWEST 20 KM/H GUSTING TO 40 NEAR
NOON. HIGH 25. HUMIDEX 27. UV INDEX 6 OR HIGH.
WEDNESDAY NIGHT..PARTLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS
OVERNIGHT. WIND NORTHWEST 20 KM/H GUSTING TO 40 BECOMING LIGHT IN
THE EVENING. LOW 10.
HANNA - CORONATION - OYEN.
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS THIS
EVENING. BECOMING CLEAR OVERNIGHT. RISK OF A THUNDERSTORM THIS
EVENING. WIND SOUTH 20 KM/H GUSTING TO 40 BECOMING NORTHWEST 20
GUSTING TO 40 THEN LIGHT THIS EVENING. LOW 10.
WEDNESDAY..SUNNY. WIND BECOMING NORTHWEST 20 KM/H GUSTING TO 40 NEAR
NOON. HIGH 28. HUMIDEX 29. UV INDEX 7 OR HIGH.
WEDNESDAY NIGHT..CLEAR IN THE EVENING THEN PARTLY CLOUDY WITH
30 PERCENT CHANCE OF SHOWERS OVERNIGHT. WIND NORTHWEST 20 KM/H
GUSTING TO 40 BECOMING LIGHT IN THE EVENING. LOW 10.
MEDICINE HAT - BOW ISLAND - SUFFIELD.
TONIGHT..PARTLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS THIS EVENING
WITH RISK OF A THUNDERSTORM. LOCAL SMOKE THIS EVENING. WIND WEST
20 KM/H GUSTING TO 40 BECOMING LIGHT THIS EVENING. LOW 13.
WEDNESDAY..SUNNY. WIND BECOMING NORTHWEST 20 KM/H GUSTING TO 40 NEAR
NOON. HIGH 29. HUMIDEX 31. UV INDEX 7 OR HIGH.
WEDNESDAY NIGHT..CLEAR EARLY IN THE EVENING THEN PARTLY CLOUDY WITH
30 PERCENT CHANCE OF SHOWERS OVERNIGHT. WIND NORTHWEST 20 KM/H
GUSTING TO 40 BECOMING LIGHT IN THE EVENING. LOW 15.
CYPRESS HILLS PROVINCIAL PARK - FOREMOST.
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS THIS
EVENING. BECOMING CLEAR OVERNIGHT. RISK OF A THUNDERSTORM THIS
EVENING. LOCAL SMOKE. WIND WEST 20 KM/H GUSTING TO 40 BECOMING LIGHT
THIS EVENING. LOW 14.
WEDNESDAY..SUNNY. WIND BECOMING NORTHWEST 20 KM/H GUSTING TO 40 NEAR
NOON. HIGH 30. UV INDEX 7 OR HIGH.
WEDNESDAY NIGHT..CLEAR EARLY IN THE EVENING THEN PARTLY CLOUDY WITH
30 PERCENT CHANCE OF SHOWERS OVERNIGHT. WIND NORTHWEST 20 KM/H
GUSTING TO 40 BECOMING LIGHT IN THE EVENING. LOW 14.
LETHBRIDGE - TABER - MILK RIVER.
TONIGHT..PARTLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS THIS EVENING
WITH RISK OF A THUNDERSTORM. LOCAL SMOKE. WIND WEST 30 KM/H GUSTING
TO 50 BECOMING LIGHT THIS EVENING. LOW 11.
WEDNESDAY..SUNNY. LOCAL SMOKE. WIND BECOMING WEST 20 KM/H GUSTING TO
40 NEAR NOON. HIGH 29. HUMIDEX 31. UV INDEX 7 OR HIGH.
WEDNESDAY NIGHT..PARTLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS
OVERNIGHT. WIND WEST 20 KM/H GUSTING TO 40 BECOMING LIGHT IN THE
EVENING. LOW 12.
CARDSTON - FORT MACLEOD - MAGRATH.
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS THIS
EVENING. BECOMING CLEAR OVERNIGHT. RISK OF A THUNDERSTORM THIS
EVENING. LOCAL SMOKE. WIND WEST 30 KM/H GUSTING TO 50 BECOMING LIGHT
THIS EVENING. LOW 14.
WEDNESDAY..SUNNY. LOCAL SMOKE. WIND BECOMING WEST 20 KM/H GUSTING TO
40 NEAR NOON. HIGH 29. UV INDEX 7 OR HIGH.
WEDNESDAY NIGHT..A FEW CLOUDS. WIND WEST 20 KM/H GUSTING TO 40
BECOMING LIGHT IN THE EVENING. LOW 13.
CROWSNEST PASS - PINCHER CREEK - WATERTON LAKES NAT. PARK.
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS THIS
EVENING. BECOMING CLEAR OVERNIGHT. RISK OF A THUNDERSTORM THIS
EVENING. LOCAL SMOKE. WIND WEST 30 KM/H GUSTING TO 50 BECOMING LIGHT
THIS EVENING. LOW 10.
WEDNESDAY..A MIX OF SUN AND CLOUD. RISK OF A THUNDERSTORM LATE IN THE
AFTERNOON. LOCAL SMOKE. WIND BECOMING WEST 20 KM/H GUSTING TO 40
NEAR NOON. HIGH 29. HUMIDEX 30. UV INDEX 7 OR HIGH.
WEDNESDAY NIGHT..PARTLY CLOUDY. RISK OF A THUNDERSTORM EARLY IN THE
EVENING. LOCAL SMOKE. WIND WEST 20 KM/H GUSTING TO 40 BECOMING LIGHT
IN THE EVENING. LOW 10.
END
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