Harrisburg, MO Weather & Growing Conditions
This Afternoon
69°F
Chance Light Rain
A chance of rain and a slight chance of thunderstorms before 4pm. Cloudy. High near 69, with temperatures falling to around 64 in the afternoon. South wind 12 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 50%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 69°F | Chance Light Rain | 12 to 17 mph S | 50% |
| Tonight | 48°F | Chance Rain Showers | 12 mph SW | 13% |
| Wednesday | 58°F | Mostly Cloudy | 8 to 14 mph W | 9% |
| Wednesday Night | 41°F | Partly Cloudy | 6 mph W | 1% |
| Thursday | 59°F | Mostly Sunny | 6 to 10 mph W | 9% |
| Thursday Night | 41°F | Mostly Cloudy | 5 mph NW | 12% |
| Friday | 56°F | Partly Sunny | 7 mph N | 3% |
| Friday Night | 37°F | Mostly Cloudy | 0 to 3 mph N | 3% |
| Saturday | 57°F | Partly Sunny | 2 mph NW | 1% |
| Saturday Night | 36°F | Partly Cloudy | 1 mph NW | 5% |
| Sunday | 63°F | Sunny | 1 to 6 mph W | 7% |
| Sunday Night | 37°F | Mostly Clear | 3 mph W | 2% |
| Monday | 67°F | Sunny | 3 to 8 mph SW | 0% |
| Monday Night | 41°F | Mostly Clear | 3 mph SW | 0% |
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 Nov 4, 2026.