Weather forecast for: Mascoutah IL
Last Update: 10:11 am CDT Sep 21, 2026
Today: A slight chance of showers before 1pm, then a slight chance of showers and thunderstorms between 1pm and 3pm, then a slight chance of drizzle after 3pm. Cloudy, with a high near 73. North wind 3 to 7 mph. Chance of precipitation is 20%.
Tonight: Mostly cloudy, with a low around 62. Northeast wind 6 to 8 mph.
Tuesday: Mostly cloudy, with a high near 74. Northeast wind 6 to 9 mph.
Tuesday Night: Partly cloudy, with a low around 56. North wind 5 to 9 mph.
Wednesday: Mostly sunny, with a high near 75. North wind 6 to 10 mph.
Wednesday Night: Partly cloudy, with a low around 55.
Thursday: Mostly sunny, with a high near 76.
Thursday Night: Partly cloudy, with a low around 56.
Friday: Mostly sunny, with a high near 77.
Friday Night: Partly cloudy, with a low around 55.
Saturday: Partly sunny, with a high near 76.
Saturday Night: Mostly cloudy, with a low around 56.
Sunday: Mostly sunny, with a high near 82.