County Forecast for La Harpe , IL
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201000-
Hancock-
Including the city of Carthage
921 PM CDT Wed Aug 19 2026

Tonight   Mostly cloudy with showers and thunderstorms likely this evening, then partly cloudy after midnight. Patchy fog after midnight. Lows in the mid 60s. North winds 10 to 15 mph with gusts up to 25 mph, becoming northeast around 5 mph after midnight. Chance of rain 70 percent.
Thursday   Patchy fog in the morning. Mostly sunny. Humid with highs in the lower 80s. Northeast winds around 5 mph.
Thursday night   Mostly clear. Humid with lows in the mid 60s. Southeast winds around 5 mph.
Friday   Sunny with highs in the mid 80s. Southwest winds 5 to 10 mph.
Friday night   Mostly clear. A chance of showers after midnight. Humid with lows in the mid 60s. Northwest winds around 5 mph. Chance of rain 30 percent.
Saturday and saturday night   Mostly clear. Highs in the lower 80s. Lows in the lower 60s.
Sunday through wednesday   Partly cloudy. Highs in the lower 80s. Lows in the mid 60s.
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DTN Weather Summary

Bryce Anderson image
Bryce Anderson – DTN Meteorologist
Front Moving Into Tennessee Valley Thursday, Next System Enters Northern Plains
Posted at 11:54AM Wed Aug 19, 2026 CDT
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