Weather forecast for: Chesterfield MO
Last Update: 9:26 pm CDT Sep 18, 2026
Tonight: Partly cloudy, with a low around 74. South wind 3 to 5 mph.
Saturday: Increasing clouds and hot, with a high near 98. Heat index values as high as 101. Southwest wind 3 to 7 mph.
Saturday Night: Partly cloudy, with a low around 74. Calm wind becoming southwest around 5 mph after midnight.
Sunday: A slight chance of showers, with thunderstorms also possible after 4pm. Mostly sunny, with a high near 93. West wind 3 to 5 mph. Chance of precipitation is 20%.
Sunday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 68. Northeast wind around 6 mph. Chance of precipitation is 60%.
Monday: Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 79. Chance of precipitation is 70%.
Monday Night: A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 61. Chance of precipitation is 20%.
Tuesday: Mostly cloudy, with a high near 72.
Tuesday Night: Mostly cloudy, with a low around 55.
Wednesday: Mostly sunny, with a high near 74.
Wednesday Night: Partly cloudy, with a low around 56.
Thursday: Mostly sunny, with a high near 75.
Thursday Night: Partly cloudy, with a low around 59.
Friday: Mostly sunny, with a high near 76.
WeatherWorld.com
