Harrisburg, MO Weather & Growing Conditions
Today
89°F
Sunny
Sunny, with a high near 89. South wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 89°F | Sunny | 6 mph S | 0% |
| Tonight | 71°F | Partly Cloudy | 5 mph SE | 5% |
| Wednesday | 89°F | Partly Sunny then Scattered Showers And Thunderstorms | 6 mph S | 45% |
| Wednesday Night | 69°F | Chance Showers And Thunderstorms | 6 mph NE | 83% |
| Thursday | 85°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 mph S | 83% |
| Thursday Night | 68°F | Partly Cloudy | 3 mph SE | 7% |
| Friday | 87°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 3 mph S | 16% |
| Friday Night | 70°F | Slight Chance Showers And Thunderstorms | 3 mph S | 23% |
| Saturday | 90°F | Slight Chance Showers And Thunderstorms then Sunny | 6 mph S | 23% |
| Saturday Night | 73°F | Mostly Clear | 7 mph S | 5% |
| Sunday | 91°F | Sunny | 7 to 10 mph SW | 2% |
| Sunday Night | 74°F | Mostly Clear | 8 mph S | 4% |
| Monday | 92°F | Sunny | 7 to 10 mph S | 4% |
| Monday Night | 75°F | Mostly Clear | 9 mph S | 8% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Harrisburg, MO
Last spring frost
Apr 5
First fall frost
Oct 31
Growing season
207 days
Hardiness zone
6b
Explore more for Harrisburg, MO: full frost dates · planting calendar · Missouri frost dates
Climate data from the nearest NOAA station, Columbia U Of M, Mo (14.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.