County Forecast for Ursa , IL
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171800-
Adams IL-Brown IL-Pike IL-Knox MO-Lewis MO-Shelby MO-Marion MO-
Monroe MO-Ralls MO-Pike MO-
Including the cities of Quincy, Mount Sterling, Pittsfield,
Hannibal, and Bowling Green
548 AM CDT Thu Sep 17 2026

Today   Sunny. Highs in the lower 90s. Southwest winds 5 to 10 mph with gusts up to 20 mph, becoming west this afternoon. Heat index values up to 103.
Tonight   Mostly clear in the evening, then becoming partly cloudy. Patchy fog after midnight. Humid with lows around 70. Northeast winds around 5 mph. Heat index values up to 100 early in the evening.
Friday   Patchy fog in the morning. Mostly sunny with a slight chance of showers and thunderstorms. Humid with highs in the upper 80s. East winds 5 to 10 mph, becoming south in the afternoon. Chance of rain 20 percent. Heat index values up to 100 in the afternoon.
Friday night   Partly cloudy. Lows in the lower 70s. South winds around 5 mph.
Saturday   Partly sunny. Highs in the lower 90s. Southwest winds 5 to 10 mph with gusts up to 20 mph.
Saturday night   Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly cloudy with showers likely with a slight chance of thunderstorms after midnight. Lows in the upper 60s. Chance of rain 60 percent.
Sunday   Mostly cloudy in the morning, then becoming partly sunny. A chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Cooler with highs in the lower 80s. Chance of rain 50 percent.
Sunday night   Mostly cloudy. A chance of showers and thunderstorms in the evening, then showers likely with a slight chance of thunderstorms after midnight. Lows in the lower 60s. Chance of rain 70 percent.
Monday   A slight chance of thunderstorms. Showers likely, mainly in the morning. Highs in the lower 70s. Chance of rain 70 percent.
Monday night   Mostly cloudy. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the upper 50s. Chance of rain 40 percent.
Tuesday   Partly sunny. A slight chance of showers in the morning. Highs in the lower 70s. Chance of rain 20 percent.
Tuesday night and wednesday   Partly cloudy. Lows in the upper 50s. Highs in the mid 70s.
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DTN Weather Summary

Bryce Anderson image
Bryce Anderson – DTN Meteorologist
Heavy Rain Continues in Northern Illinois, Indiana Thursday Evening
Posted at 5:33AM Thu Sep 17, 2026 CDT
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