Weather forecast for: Riverton IL
Last Update: 7:36 am CDT Sep 18, 2026
Today: A slight chance of showers and thunderstorms between 10am and noon. Cloudy, then gradually becoming mostly sunny, with a high near 87. East wind 5 to 7 mph. Chance of precipitation is 20%.
Tonight: Partly cloudy, with a low around 69. East wind around 8 mph becoming south southeast after midnight.
Saturday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 90. South wind around 8 mph.
Saturday Night: A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 69. South wind 3 to 5 mph.
Sunday: Showers likely after 1pm. Partly sunny, with a high near 85. Light and variable wind becoming north 5 to 8 mph in the morning. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night: Showers likely, with thunderstorms also possible after 7pm. Mostly cloudy, with a low around 61. Northeast wind 7 to 11 mph, with gusts as high as 16 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Monday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 73. East northeast wind 9 to 11 mph, with gusts as high as 17 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 55.
Tuesday: Partly sunny, with a high near 68.
Tuesday Night: Mostly cloudy, with a low around 52.
Wednesday: Mostly sunny, with a high near 71.
Wednesday Night: Partly cloudy, with a low around 52.
Thursday: Mostly sunny, with a high near 74.
WeatherWorld.com
