Weather forecast for: Niantic IL
Last Update: 6:36 pm CDT Sep 8, 2026
Tonight: Mostly clear, with a low around 72. South southeast wind 6 to 8 mph, with gusts as high as 18 mph.
Wednesday: A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 92. Heat index values as high as 100. South wind 8 to 11 mph becoming west northwest in the afternoon. Winds could gust as high as 16 mph. Chance of precipitation is 30%.
Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Northwest wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 50%.
Thursday: Showers likely before 1pm. Mostly cloudy, with a high near 83. North northwest wind 3 to 8 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night: Mostly clear, with a low around 58. East northeast wind 3 to 5 mph.
Friday: Sunny, with a high near 85. Southeast wind 5 to 7 mph.
Friday Night: Mostly clear, with a low around 64. Southeast wind around 7 mph.
Saturday: Mostly sunny, with a high near 90.
Saturday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 66.
Sunday: A 30 percent chance of showers. Mostly sunny, with a high near 86.
Sunday Night: A chance of showers. Partly cloudy, with a low around 64.
Monday: A chance of showers. Mostly sunny, with a high near 88.
Monday Night: A chance of showers. Partly cloudy, with a low around 66.
Tuesday: Mostly sunny, with a high near 84.
WeatherWorld.com
