County Forecast for Ursa , IL
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181700-
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
448 AM CDT Fri Sep 18 2026

Today   Mostly sunny. Highs in the upper 80s. East winds 5 to 10 mph. Heat index values up to 101 this afternoon.
Tonight   Partly cloudy. Humid with lows in the lower 70s. Southeast winds 5 to 10 mph.
Saturday   Mostly cloudy. Highs around 90. Southwest winds 5 to 10 mph with gusts up to 20 mph.
Saturday night   Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers. A chance of thunderstorms, mainly in the evening. Lows in the upper 60s. Southwest winds around 5 mph, becoming north after midnight. Chance of rain 50 percent.
Sunday   Mostly cloudy. Showers likely in the morning, then a chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the lower 80s. Northwest winds around 5 mph. Chance of rain 70 percent.
Sunday night   A chance of thunderstorms. Showers likely. Lows in the lower 60s. Chance of rain 70 percent.
Monday   A slight chance of thunderstorms. Showers likely, mainly in the morning. Cooler with highs in the upper 60s. Chance of rain 70 percent.
Monday night   A slight chance of thunderstorms in the evening. Mostly cloudy with a slight chance of showers. Lows in the mid 50s. Chance of rain 20 percent.
Tuesday and tuesday night   Mostly cloudy. Highs in the mid 60s. Lows around 50.
Wednesday and wednesday night   Partly cloudy. Highs in the upper 60s. Lows in the lower 50s.
Thursday   Partly sunny. Highs in the lower 70s.
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Bryce Anderson image
Bryce Anderson – DTN Meteorologist
South Dakota Becomes the Target for Heavy Rain Tonight
Posted at 11:33AM Thu Sep 17, 2026 CDT
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