WXSIM Forecast for: Lethbridge Issued by: West Lethbridge Weather

Updated: Tuesday, 19-May-2026 06:00 pm

Tonight Thunder storm Wednesday Thunder storm Wednesday night Mostly Cloudy Thursday Partly Cloudy Thursday night Partly Cloudy Friday Partly Cloudy Friday night Chance rain Saturday Mostly Cloudy Saturday night Partly Cloudy Sunday Mostly Cloudy <2 mm. <2 mm. 2 mm. Low: 7° High: 15° Low: 4° High: 17° Low: 3° High: 21° Low: 6° High: 23° Low: 8° High: 24°                             Scattered light frost           SW→NW 11-32 km/h Fresh breeze NW 10 km/h Light breeze NNW→WNW 11-24 km/h Moderate breeze NW 11-27 km/h Moderate breeze E→SSE 8 km/h Light breeze WSW→E 4 km/h Light air SSE→WNW 8 km/h Light breeze SSW 8-25→15-32 km/h Fresh breeze WSW 16-32 km/h Fresh breeze WSW 22-35→27-41 km/h Strong breeze UV: 4  Medium  UV: 5  Medium  UV: 6  High  UV: 6  High  UV: 6  High

Tonight	Mostly cloudy in the evening, becoming mostly cloudy to cloudy after midnight. A chance of rain. Scattered thundershowers possible. Low 7°. Wind southwest around 11 km/h, gusting to 32 km/h, in the evening, becoming northwest after midnight. Chance of precipitation 30 percent. Precipitation mostly less than 2 mm.
Wednesday	Cloudy in the morning, becoming partly to mostly cloudy in the afternoon. A chance of rain. Scattered thundershowers possible. High 15°. UV index up to 4. Wind northwest around 10 km/h. Chance of precipitation 30 percent. Precipitation mostly less than 2 mm.
Wednesday night	Partly to mostly cloudy. Cool. Low 4°. Wind north-northwest around 11 km/h, gusting to 24 km/h, in the evening, becoming west-northwest after midnight.
Thursday	Partly cloudy. High 17°. UV index up to 5. Wind northwest around 11 km/h, gusting to 27 km/h.
Thursday night	Partly cloudy, with scattered light frost possible. Cool. Low 3°. Wind east around 8 km/h in the evening, becoming south-southeast after midnight.
Friday	Partly to mostly sunny in the morning, becoming partly cloudy in the afternoon. High 21°. UV index up to 6. Wind west-southwest around 4 km/h in the morning, becoming east in the afternoon.
Friday night	Partly to mostly cloudy in the evening, becoming fair to partly cloudy after midnight. A chance of rain in the evening, then a slight chance of rain after midnight. Low 6°. Wind south-southeast around 8 km/h in the evening, becoming west-northwest after midnight. Chance of precipitation 40 percent. Precipitation mostly around 2 mm.
Saturday	Mostly sunny in the morning, becoming partly to mostly cloudy in the afternoon. Warm. High 23°. UV index up to 6. Wind south-southwest around 8 km/h, gusting to 25 km/h, in the morning, becoming 15 km/h, gusting to 32 km/h, in the afternoon.
Saturday night	Partly cloudy. Low 8°. Wind west-southwest around 16 km/h, gusting to 32 km/h.
Sunday	Partly to mostly sunny in the morning, becoming partly to mostly cloudy in the afternoon. Breezy and warm. High 24°. UV index up to 6. Wind west-southwest around 22 km/h, gusting to 35 km/h, in the morning, becoming 27 km/h, gusting to 41 km/h, in the afternoon.
Sunday night	Partly to mostly cloudy in the evening, becoming mostly cloudy after midnight. Breezy. Low 10°. Wind west-southwest around 21 km/h, gusting to 39 km/h.
Monday	Mostly cloudy to cloudy in the morning, becoming partly to mostly cloudy in the afternoon. Windy. High 22°. UV index up to 5. Wind west-southwest around 27 km/h, gusting to 46 km/h.
Monday night	Dense overcast. A chance of rain in the evening, then rain likely after midnight. Scattered thunderstorms likely, some possibly severe. Breezy. Low 7°. Wind north-northwest around 21 km/h, gusting to 40 km/h. Chance of precipitation 70 percent. Precipitation mostly between 5 and 10 mm.

WXSIM forecast formatting script by Saratoga-Weather.org.