WXSIM Forecast for: Lethbridge Issued by: West Lethbridge Weather

Updated: Tuesday, 18-Aug-2026 05:00 pm

Tonight Partly Cloudy Wednesday Mostly Sunny Wednesday night Partly Cloudy Thursday Mostly Sunny Thursday night Mostly Clear Friday Partly Cloudy Friday night Partly Cloudy Saturday Partly Cloudy Saturday night Fair Sunday Mostly Sunny Low: 15° High: 29° Low: 15° High: 29° Low: 12° High: 27° Low: 14° High: 33° Low: 14° High: 30°                     WSW→WNW 5 km/h Light air SW→SE 4 km/h Light air E 6 km/h Light breeze NNW→NE 5 km/h Light air NE→N 9 km/h Light breeze NNE→E 3→8 km/h Light breeze E→S 8 km/h Light breeze SSW 7-27 km/h Moderate breeze SW 11-27 km/h Moderate breeze WSW 12-29 km/h Moderate breeze UV: 7  High  UV: 6  High  UV: 6  High  UV: 7  High  UV: 6  High

Tonight	Fair to partly cloudy in the evening, becoming partly cloudy after midnight. Low 15°. Wind west-southwest around 5 km/h in the evening, becoming west-northwest after midnight.
Wednesday	Sunny in the morning, becoming partly to mostly sunny in the afternoon. Warm. High 29°. UV index up to 7. Wind southwest around 4 km/h in the morning, becoming southeast in the afternoon.
Wednesday night	Fair to partly cloudy in the evening, becoming partly cloudy after midnight. Low 15°. Wind east around 6 km/h.
Thursday	Partly to mostly sunny in the morning, becoming sunny in the afternoon. Warm. High 29°. UV index up to 6. Wind north-northwest around 5 km/h in the morning, becoming northeast in the afternoon.
Thursday night	Clear in the evening, becoming mostly clear after midnight. Low 12°. Wind northeast around 9 km/h in the evening, becoming north after midnight.
Friday	Partly cloudy. Warm. High 27°. UV index up to 6. Wind north-northeast around 3 km/h in the morning, becoming east around 8 km/h in the afternoon.
Friday night	Partly cloudy. Low 14°. Wind east around 8 km/h in the evening, becoming south after midnight.
Saturday	Partly cloudy in the morning, becoming mostly sunny in the afternoon. Very hot. High 33°. UV index up to 7. Wind south-southwest around 7 km/h, gusting to 27 km/h.
Saturday night	Fair. Low 14°. Wind southwest around 11 km/h, gusting to 27 km/h.
Sunday	Partly to mostly sunny. Hot. High 30°. UV index up to 6. Wind west-southwest around 12 km/h, gusting to 29 km/h.
Sunday night	Clear in the evening, becoming mostly clear after midnight. Low 12°. Wind southwest around 11 km/h, gusting to 28 km/h.
Monday	Sunny. Warm. High 28°. UV index up to 6. Wind northwest around 5 km/h in the morning, becoming north-northeast in the afternoon.
Monday night	Partly cloudy. Low 11°. Wind east around 9 km/h in the evening, becoming southeast near calm after midnight.

WXSIM forecast formatting script by Saratoga-Weather.org.