Weather forecast for: Grant Park IL
Last Update: 9:26 am CDT Oct 14, 2026
Today: A 30 percent chance of showers, mainly before 11am. Mostly cloudy, with a temperature falling to around 63 by 5pm. North northeast wind around 10 mph, with gusts as high as 15 mph.
Tonight: A 30 percent chance of rain after 4am. Mostly cloudy, with a low around 58. North northeast wind 5 to 10 mph, with gusts as high as 15 mph.
Thursday: Rain likely, then rain and possibly a thunderstorm after 1pm. High near 63. East southeast wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night: Rain and possibly a thunderstorm before 1am, then a chance of rain. Low around 50. South wind 5 to 15 mph becoming west northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 80%.
Friday: A 30 percent chance of rain, mainly before 1pm. Partly sunny, with a high near 56. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 35 mph.
Friday Night: Partly cloudy, with a low around 39.
Saturday: Sunny, with a high near 56.
Saturday Night: Clear, with a low around 37.
Sunday: Sunny, with a high near 67.
Sunday Night: Partly cloudy, with a low around 44.
Monday: Partly sunny, with a high near 69.
Monday Night: Partly cloudy, with a low around 46.
Tuesday: Mostly sunny, with a high near 73.