Weather forecast for: Fairfield IL
Last Update: 7:01 pm CST Nov 8, 2026
Tonight: Patchy fog before midnight, then patchy fog after 4am. Otherwise, mostly clear, with a low around 39. Light and variable wind.
Monday: Patchy fog before 9am. Otherwise, sunny, with a high near 66. Calm wind becoming southwest around 5 mph.
Monday Night: Clear, with a low around 44. Calm wind.
Tuesday: Sunny, with a high near 69. Calm wind becoming west southwest around 6 mph.
Tuesday Night: Mostly clear, with a low around 44. Calm wind.
Veterans Day: A 40 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 69. Light and variable wind becoming southwest 5 to 10 mph in the morning.
Wednesday Night: A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 45. West wind 6 to 13 mph becoming north northwest after midnight. Winds could gust as high as 21 mph.
Thursday: Partly sunny, with a high near 53. North northwest wind 14 to 18 mph, with gusts as high as 25 mph.
Thursday Night: Partly cloudy, with a low around 33. North northwest wind 7 to 15 mph, with gusts as high as 21 mph.
Friday: Mostly sunny, with a high near 48. North northwest wind 7 to 14 mph, with gusts as high as 18 mph.
Friday Night: Mostly clear, with a low around 28. Northwest wind around 5 mph becoming calm in the evening.
Saturday: Sunny, with a high near 52. Calm wind becoming west northwest around 6 mph.
Saturday Night: Mostly clear, with a low around 32. Calm wind.
Sunday: Sunny, with a high near 60. Calm wind becoming west southwest around 5 mph.
WeatherWorld.com
