Weather forecast for: Flat Rock IL
Last Update: 5:16 am CST Nov 6, 2026
Today: Patchy drizzle before 11am. Cloudy through mid morning, then gradual clearing, with a high near 53. North northwest wind 9 to 13 mph, with gusts as high as 18 mph.
Tonight: Clear, with a low around 31. North northwest wind around 6 mph becoming calm in the evening.
Saturday: Sunny, with a high near 54. Calm wind becoming northwest 5 to 7 mph.
Saturday Night: Mostly clear, with a low around 28. Light and variable wind.
Sunday: Sunny, with a high near 62. Light west southwest wind increasing to 5 to 9 mph in the morning. Winds could gust as high as 16 mph.
Sunday Night: Clear, with a low around 35. West southwest wind around 6 mph becoming calm in the evening.
Monday: Sunny, with a high near 66. Calm wind becoming southwest 5 to 9 mph in the morning.
Monday Night: Clear, with a low around 40.
Tuesday: Sunny, with a high near 68.
Tuesday Night: Clear, with a low around 38.
Veterans Day: Sunny, with a high near 65.
Wednesday Night: Partly cloudy, with a low around 40.
Thursday: Mostly sunny, with a high near 61.