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Brown County, IL 7-Day Weather Forecast
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Brown County Weather Forecast
Brown County, IL Weather Forecast Date: 853 PM CST Tue Mar 03 2026
Weather forecast for Brown County, IL
Tonight Lo: 45°F Lo: 7°C |
Tonight... Rain with a chance of thunderstorms this evening, then rain with a slight chance of thunderstorms after midnight. Patchy fog. Near steady temperature in the mid 40s. Northeast winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 90%. |
Wed Hi: 55°FHi: 13°C Lo: 49°F Lo: 9°C |
Wednesday... Cloudy. A chance of rain with a slight chance of thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Patchy fog. Highs in the mid 50s. Northeast winds 5 to 10 mph. Chance of rain 50%. |
Thu Hi: 65°FHi: 18°C Lo: 51°F Lo: 11°C |
Thursday... Mostly cloudy with a chance of showers in the morning, then mostly sunny with a slight chance of showers in the afternoon. Not as cool with highs in the mid 60s. West winds 5 to 10 mph. Chance of rain 40%. |
| Fri Hi: 79°FHi: 26°C Lo: 50°F Lo: 10°C |
Friday... Mostly cloudy with a chance of thunderstorms. Showers likely, mainly in the morning. Not as cool with highs in the upper 70s. Chance of rain 70%. |
| Sat Hi: 61°FHi: 16°C Lo: 39°F Lo: 4°C |
Saturday... Partly sunny with a slight chance of showers in the morning, then sunny in the afternoon. Much cooler with highs in the lower 60s. Chance of rain 20%. |
Sun Hi: 69°FHi: 21°C Lo: 45°F Lo: 7°C |
Sunday... Mostly clear. Lows in the upper 30s. Highs in the upper 60s. |
| Mon Hi: 71°FHi: 22°C Lo: 55°F Lo: 13°C |
Monday... Mostly clear. Lows in the mid 40s. Highs in the lower 70s. |
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