Weather forecast for: Plymouth IL
Last Update: 1:41 am CDT Oct 1, 2026
Overnight: A 30 percent chance of showers, mainly after 5am. Cloudy, with a steady temperature around 70. East wind around 5 mph becoming south.
Thursday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am. High near 73. South wind 5 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Thursday Night: Showers, mainly before midnight. Low around 55. North wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Friday: Partly sunny, then gradually becoming sunny, with a high near 65. North wind around 10 mph, with gusts as high as 25 mph.
Friday Night: Clear, with a low around 45.
Saturday: Sunny, with a high near 68.
Saturday Night: Mostly clear, with a low around 50.
Sunday: Sunny, with a high near 71.
Sunday Night: Clear, with a low around 48.
Monday: Sunny, with a high near 67.
Monday Night: Clear, with a low around 45.
Tuesday: Sunny, with a high near 68.
Tuesday Night: Mostly clear, with a low around 54.
Wednesday: Mostly sunny, with a high near 73.