Weather forecast for: Chester IL
Last Update: 12:31 pm CDT Sep 23, 2026
This Afternoon: Mostly cloudy, with a high near 69. North wind around 9 mph.
Tonight: Mostly cloudy, with a low around 54. North wind around 6 mph becoming calm in the evening.
Thursday: Partly sunny, with a high near 76. North wind 3 to 6 mph.
Thursday Night: Mostly cloudy, with a low around 56. Light northeast wind.
Friday: Partly sunny, with a high near 79. Calm wind becoming northeast around 6 mph in the afternoon.
Friday Night: Partly cloudy, with a low around 54.
Saturday: Mostly cloudy, with a high near 76.
Saturday Night: Mostly cloudy, with a low around 55.
Sunday: Partly sunny, with a high near 80.
Sunday Night: Partly cloudy, with a low around 56.
Monday: Mostly sunny, with a high near 83.
Monday Night: Mostly clear, with a low around 60.
Tuesday: A 40 percent chance of showers. Mostly sunny, with a high near 86.