Onalaska, WA 7-Day Weather Forecast
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Onalaska Weather Forecast


Onalaska, WA Weather Forecast Date: 236 AM PDT Wed Sep 02 2026
Weather forecast for Onalaska, WA
| Today Hi: 63°FHi: 17°C Lo: 46°F Lo: 8°C |
Today... Mostly cloudy in the morning, then a chance of rain late in the morning. Rain in the afternoon. Rainfall amounts a quarter to a half inch possible. Highs in the lower to mid 60s. South wind 10 to 20 mph. |
| Thu Hi: 63°FHi: 17°C Lo: 47°F Lo: 8°C |
Thursday... Showers likely in the morning, then showers likely and a slight chance of thunderstorms in the afternoon. Rainfall amounts a tenth to a quarter of an inch possible, except higher amounts possible in thunderstorms. Highs in the lower to mid 60s. Southeast wind 10 to 15 mph becoming south in the afternoon. Gusts to 25 mph. |
| Fri Hi: 67°FHi: 19°C Lo: 49°F Lo: 9°C |
Friday... Mostly cloudy. A chance of showers and a slight chance of thunderstorms in the afternoon. Highs in the mid to upper 60s. Light wind. |
| Sat Hi: 71°FHi: 22°C Lo: 50°F Lo: 10°C |
Saturday... Partly sunny. A chance of showers in the afternoon. Highs in the lower 70s. |
| Sun Hi: 73°FHi: 23°C Lo: 51°F Lo: 11°C |
Sunday... Mostly sunny with a slight chance of showers. Highs in the lower to mid 70s. |
| Labor Day Hi: 71°FHi: 22°C Lo: 51°F Lo: 11°C |
Labor Day... Partly sunny. A chance of showers in the morning, then a slight chance of showers in the afternoon. Highs in the lower 70s. |
| Tue Hi: 71°FHi: 22°C |
Tuesday... Mostly cloudy. A slight chance of showers in the afternoon. Highs in the lower 70s. |
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