Weather forecast for: Monticello IL
Last Update: 7:36 am CDT Oct 14, 2026
Today: A 50 percent chance of showers, mainly before 4pm. Mostly cloudy, with a high near 75. North northeast wind 5 to 8 mph.
Tonight: A slight chance of showers before 1am, then a slight chance of showers after 4am. Mostly cloudy, with a low around 58. Northeast wind 9 to 11 mph, with gusts as high as 15 mph. Chance of precipitation is 20%.
Thursday: Showers and thunderstorms, mainly before 4pm, then showers likely and possibly a thunderstorm after 5pm. High near 74. East wind around 9 mph becoming south southwest in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night: Showers likely and possibly a thunderstorm, then showers after 7pm. Low around 47. Breezy, with a southwest wind 10 to 20 mph becoming northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday: Partly sunny, with a high near 56. Breezy, with a northwest wind 22 to 26 mph, with gusts as high as 34 mph.
Friday Night: Areas of frost after 5am. Otherwise, mostly clear, with a low around 36. North wind 8 to 17 mph, with gusts as high as 21 mph.
Saturday: Areas of frost before 8am. Otherwise, sunny, with a high near 59. North wind around 5 mph becoming calm in the morning.
Saturday Night: Areas of frost after 5am. Otherwise, clear, with a low around 36.
Sunday: Areas of frost before 8am. Otherwise, sunny, with a high near 69.
Sunday Night: Partly cloudy, with a low around 44.
Monday: Partly sunny, with a high near 72.
Monday Night: Partly cloudy, with a low around 46.
Tuesday: Mostly sunny, with a high near 76.
WeatherWorld.com
