Harrisonville Weather Forecast
- 75
- 89
Isolated Thunderstorms
- 77
- 94
Isolated Thunderstorms
- 77
- 97
Hot
- 75
- 97
Hot
- 75
- 94
Slight Chance Thunderstorms
- 76
- 94
Chance Thunderstorms
- 75
- 95
Slight Chance Thunderstorms
Today 21 Jul Monroe
Mostly sunny. Highs in the upper 80s. South Winds around 5 Mph. Heat index Values up to 101.
Tonight 21 Jul Monroe
Partly cloudy. Isolated Showers and Thunderstorms after midnight. Lows in the mid 70s. Southeast Winds around 5 Mph. Chance of rain 20 percent. Heat index Values up to 100 early this evening.
Harrisonville Temperature Statistics
July Temperature
St. Louis Downtown Airport (22.4 miles)
Lowest 2 July, 2025
63.6 °FAverage July
81.4 °FHighest 11 July, 2025
97.6 °F
Climate (2020–Present)
St. Louis Downtown Airport (22.4 miles)
Average Low 2020–2025
47.3 °FAverage 2020–2025
57.7 °FAverage High 2020–2025
68.3 °F