Weather forecast for: Brownstown IL
Last Update: 3:46 pm CDT Sep 7, 2026
Tonight: Mostly clear, with a low around 60. East wind 5 to 7 mph becoming calm in the evening.
Tuesday: Mostly sunny, with a high near 93. Calm wind becoming south around 5 mph in the afternoon.
Tuesday Night: Partly cloudy, with a low around 71. Calm wind becoming south 5 to 7 mph after midnight.
Wednesday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 96. Heat index values as high as 101. West wind 8 to 11 mph.
Wednesday Night: Showers and possibly a thunderstorm. Low around 68. Light southwest wind. Chance of precipitation is 100%.
Thursday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 82. Chance of precipitation is 70%.
Thursday Night: A 20 percent chance of showers before 1am. Partly cloudy, with a low around 60.
Friday: Mostly sunny, with a high near 85.
Friday Night: A chance of showers, with thunderstorms also possible after 1am. Partly cloudy, with a low around 64. Chance of precipitation is 30%.
Saturday: A 30 percent chance of showers, mainly before 1pm. Mostly sunny, with a high near 89.
Saturday Night: Mostly clear, with a low around 65.
Sunday: Sunny, with a high near 89.
Sunday Night: Mostly clear, with a low around 64.
Monday: Sunny, with a high near 88.