Weather forecast for: Union MO
Last Update: 2:21 pm CDT Sep 12, 2026
Tonight: Partly cloudy, with a low around 66. Calm wind.
Sunday: Scattered showers and thunderstorms, mainly between 1pm and 3pm. Mostly cloudy, then gradually becoming sunny, with a high near 86. Calm wind. Chance of precipitation is 30%.
Sunday Night: Isolated showers and thunderstorms before 2am, then isolated showers between 2am and 3am. Partly cloudy, with a low around 61. Calm wind. Chance of precipitation is 20%.
Monday: Mostly cloudy, then gradually becoming sunny, with a high near 87. Southeast wind 3 to 7 mph.
Monday Night: Mostly clear, with a low around 69. Southeast wind 3 to 6 mph.
Tuesday: Sunny, with a high near 96.
Tuesday Night: Partly cloudy, with a low around 70.
Wednesday: Mostly sunny, with a high near 94.
Wednesday Night: A 20 percent chance of showers after 1am. Partly cloudy, with a low around 70.
Thursday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. Chance of precipitation is 30%.
Thursday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 64.
Friday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.
Friday Night: A 20 percent chance of showers. Mostly clear, with a low around 61.
Saturday: A 30 percent chance of showers. Mostly sunny, with a high near 81.