Weather forecast for: Riverton IL
Last Update: 12:36 am CDT Sep 16, 2026
Overnight: Showers likely and possibly a thunderstorm. Cloudy, with a low around 69. Light north northeast wind. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday: Showers and thunderstorms likely before 11am, then a chance of showers between 11am and noon. Partly sunny, with a high near 90. East wind around 5 mph becoming light and variable. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night: Partly cloudy, with a low around 72. Light and variable wind.
Thursday: A chance of showers between 9am and 11am. Partly sunny, with a high near 91. Light and variable wind becoming northwest around 6 mph in the morning. Chance of precipitation is 30%.
Thursday Night: Partly cloudy, with a low around 69. North wind around 5 mph becoming light and variable.
Friday: Mostly sunny, with a high near 90. East wind 5 to 7 mph.
Friday Night: Partly cloudy, with a low around 71. East wind 5 to 8 mph becoming south southeast after midnight. Winds could gust as high as 15 mph.
Saturday: Partly sunny, with a high near 93.
Saturday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.
Sunday: A 50 percent chance of showers. Partly sunny, with a high near 85.
Sunday Night: A chance of showers. Mostly cloudy, with a low around 65.
Monday: A chance of showers. Partly sunny, with a high near 81.
Monday Night: Partly cloudy, with a low around 62.
Tuesday: Mostly sunny, with a high near 79.
WeatherWorld.com
