Harrisonville, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Harrisonville, a city in Cass County, Missouri.
Today
93°F
Mostly Sunny
Mostly sunny, with a high near 93. Heat index values as high as 99. South wind around 6 mph.
7-day forecast for Harrisonville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 93°F | Mostly Sunny | 6 mph S | 2% |
| Tonight | 72°F | Partly Cloudy | 5 mph SE | 13% |
| Wednesday | 90°F | Chance Showers And Thunderstorms | 3 to 7 mph S | 36% |
| Wednesday Night | 68°F | Chance Showers And Thunderstorms | 6 mph NNE | 75% |
| Thursday | 87°F | Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 3 mph NE | 75% |
| Thursday Night | 68°F | Partly Cloudy then Chance Showers And Thunderstorms | 3 mph ESE | 40% |
| Friday | 89°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 5 mph S | 40% |
| Friday Night | 70°F | Mostly Clear | 3 mph S | 11% |
| Saturday | 92°F | Sunny | 3 to 8 mph S | 11% |
| Saturday Night | 73°F | Mostly Clear | 8 mph S | 3% |
| Sunday | 94°F | Sunny | 8 to 12 mph SSW | 1% |
| Sunday Night | 74°F | Mostly Clear | 9 mph S | 1% |
| Monday | 95°F | Sunny | 13 mph SSW | 1% |
| Monday Night | 75°F | Mostly Clear | 10 mph S | 1% |
Forecast source: National Weather Service (api.weather.gov) for Harrisonville (38.652, -94.347). Updated through the day.
Growing snapshot for Harrisonville
Last spring frost
Apr 8
First fall frost
Oct 29
Growing season
204 days
Hardiness zone
6b
More local growing data for Harrisonville: nearby ZIP 64701 weather · frost dates · planting calendar · Missouri frost dates
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West Line
Climate data from the nearest NOAA station, Pleasant Hill Wfo, Mo (13.3 mi from Harrisonville). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.