10-Day Weather Forecast - Union, MO

Sunny, hot with highs in the upper 90s. Southwest winds around 5 mph. Heat index values up to 106.

Mostly clear. Lows in the mid 70s. Light and variable winds. Heat index values up to 103 early in the evening.

Sunny, hot with highs in the upper 90s. West winds around 5 mph. Heat index values up to 106.

Mostly clear. Lows around 70. Light and variable winds. Heat index values up to 101 early in the evening.

Mostly clear. Highs in the mid 90s. Heat index values up to 100.

Mostly clear. Lows in the upper 60s. Heat index values up to 100.

Mostly clear. Highs in the mid 90s. Heat index values up to 100.

Mostly clear. Lows in the upper 60s. Heat index values up to 100.

Mostly clear. Highs in the mid 90s. Heat index values up to 100.

Mostly clear. Hot. Lows in the mid 70s. Heat index values up to 105.

Mostly clear. Hot. Highs in the mid 90s. Heat index values up to 105.

Partly cloudy in the evening, then mostly clear with a slight chance of showers and thunderstorms after midnight. Lows in the lower 70s. Chance of rain 20 percent. Heat index values up to 100 early in the evening.

Mostly sunny with a slight chance of showers and thunderstorms. Highs in the lower 90s. Chance of rain 20 percent.

Clear with a slight chance of rain. Chance of precipitation 25%. Low temperature around 72F. Dew point will be around 70F with an average humidity of 79%. Winds will be 3 mph from the SW.

Sunny. High temperature around 89F. Dew point will be around 70F with an average humidity of 66%. Winds will be 2 mph from the SW.

Clear. Low temperature around 67F. Dew point will be around 69F with an average humidity of 84%. Winds will be 2 mph from the SE.

Mostly sunny. High temperature around 89F. Dew point will be around 70F with an average humidity of 69%. Winds will be 3 mph from the S.

Clear. Low temperature around 67F. Dew point will be around 67F with an average humidity of 81%. Winds will be 2 mph from the S.