Weather forecast for: Washington IL
Last Update: 10:36 pm CDT Sep 8, 2026
Tonight: A 30 percent chance of showers and thunderstorms after 5am. Partly cloudy, with a low around 73. South wind around 9 mph, with gusts as high as 16 mph.
Wednesday: Showers and thunderstorms likely, mainly before 9am. Partly sunny, with a high near 85. Southwest wind 6 to 8 mph becoming west northwest in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night: A chance of showers and thunderstorms. Increasing clouds, with a low around 67. West northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%.
Thursday: Mostly cloudy through mid morning, then becoming sunny, with a high near 82. North wind 3 to 7 mph.
Thursday Night: Mostly clear, with a low around 57. Light and variable wind.
Friday: Sunny, with a high near 84. South southeast wind 3 to 7 mph.
Friday Night: Mostly clear, with a low around 64. Southeast wind 6 to 8 mph, with gusts as high as 16 mph.
Saturday: A 40 percent chance of showers. Mostly sunny, with a high near 87.
Saturday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 65.
Sunday: A 30 percent chance of showers. Mostly sunny, with a high near 83.
Sunday Night: A chance of showers. Partly cloudy, with a low around 64.
Monday: A chance of showers. Mostly sunny, with a high near 85.
Monday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 66.
Tuesday: A chance of showers. Partly sunny, with a high near 82.
WeatherWorld.com
City of Washington, IL
