Weather forecast for: Lyndon IL
Last Update: 8:11 pm CDT Sep 13, 2026
Tonight: Mostly clear, with a low around 49. Calm wind becoming east around 5 mph.
Monday: A 20 percent chance of showers after 11am. Partly sunny, with a high near 74. Southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Monday Night: A slight chance of showers and thunderstorms between 1am and 2am, then showers likely and possibly a thunderstorm after 2am. Partly cloudy, with a low around 68. Southeast wind around 15 mph becoming southwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 60%.
Tuesday: Showers and possibly a thunderstorm before 10am, then showers between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. High near 82. Southwest wind around 10 mph becoming northwest in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night: Showers likely, mainly after 1am. Mostly cloudy, with a low around 60. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday: Showers, mainly before 1pm. High near 76. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Wednesday Night: Showers likely, mainly after 1am. Mostly cloudy, with a low around 64. Chance of precipitation is 70%.
Thursday: A 50 percent chance of showers before 1pm. Mostly cloudy, with a high near 79.
Thursday Night: A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 62.
Friday: A 50 percent chance of showers. Partly sunny, with a high near 78.
Friday Night: A 50 percent chance of showers. Partly cloudy, with a low around 61.
Saturday: A 50 percent chance of showers. Partly sunny, with a high near 80.
Saturday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 59.
Sunday: A 30 percent chance of showers. Partly sunny, with a high near 75.
WeatherWorld.com
