7-Day Zone Forecast for Mercer County (Text-Only)
NWS Forecast for: Mercer County
Issued by: National Weather Service Quad Cities, IA/IL
Last Update: 127 PM CDT Tue Jun 23 2026
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This Afternoon: Partly sunny. Near steady temperature in the upper 70s. Southwest winds around 5 mph.

Tonight: Partly cloudy. Lows in the lower 60s. South winds around 5 mph.

Wednesday: Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs around 80. South winds 5 to 10 mph, becoming west with gusts up to 20 mph in the afternoon. Chance of rain 40 percent.

Wednesday Night: Mostly clear in the evening, then becoming partly cloudy. Lows around 60. West winds 5 to 10 mph.

Thursday: Partly sunny. Highs in the upper 70s. Northwest winds around 5 mph.

Thursday Night: Mostly cloudy in the evening, then partly cloudy with a chance of showers after midnight. Lows in the lower 60s. Chance of rain 30 percent.

Friday: Mostly sunny with a chance of showers. Highs in the upper 70s. Chance of rain 40 percent.

Friday Night And Saturday: Partly cloudy. Lows in the mid 60s. Highs in the lower 80s.

Saturday Night: Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers after midnight. Lows in the lower 70s. Chance of rain 40 percent.

Sunday: Mostly sunny. Highs in the upper 80s. Heat index values up to 100 in the afternoon.

Sunday Night And Monday: Mostly clear. Hot. Lows in the mid 70s. Highs in the lower 90s. Heat index values up to 105.







Zone Forecast: Mercer County

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