Mercer, WI 7-Day Weather Forecast
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Mercer Weather Forecast


Mercer, WI Weather Forecast Date: 511 PM CDT Tue Sep 22 2026
Weather forecast for Mercer, WI
| Tonight Lo: 35°F Lo: 2°C |
Tonight... Clear. Patchy frost after midnight. Lows in the mid 30s. Southeast winds around 5 mph. |
| Wed Hi: 65°FHi: 18°C Lo: 39°F Lo: 4°C |
Wednesday... Areas of frost in the morning. Sunny. Highs in the mid 60s. Southeast winds around 5 mph. |
| Thu Hi: 65°FHi: 18°C Lo: 45°F Lo: 7°C |
Thursday... Partly sunny in the morning, then becoming mostly cloudy. Highs in the mid 60s. South winds 5 to 10 mph. |
| Fri Hi: 70°FHi: 21°C Lo: 45°F Lo: 7°C |
Friday... Mostly sunny. Highs around 70. |
| Sat Hi: 69°FHi: 21°C Lo: 49°F Lo: 9°C |
Saturday... Mostly cloudy with a 20% chance of showers. Highs in the upper 60s. |
| Sun Hi: 69°FHi: 21°C Lo: 50°F Lo: 10°C |
Sunday... Mostly cloudy. A slight chance of showers in the morning. Highs in the upper 60s. Chance of rain 20%. |
| Mon Hi: 71°FHi: 22°C Lo: 50°F Lo: 10°C |
Monday... Mostly cloudy in the morning, then partly sunny with a slight chance of showers in the afternoon. Highs in the lower 70s. Chance of rain 20%. |
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