Hartsburg, MO Weather & Growing Conditions
Tonight
50°F
Slight Chance Drizzle
A slight chance of drizzle before 4am. Cloudy, with a low around 50. West wind around 12 mph, with gusts as high as 21 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 50°F | Slight Chance Drizzle | 12 mph W | 12% |
| Wednesday | 60°F | Mostly Cloudy | 7 to 10 mph W | 4% |
| Wednesday Night | 43°F | Mostly Clear | 5 mph W | 0% |
| Thursday | 62°F | Mostly Sunny | 5 to 8 mph W | 8% |
| Thursday Night | 43°F | Mostly Cloudy | 5 mph NW | 8% |
| Friday | 58°F | Partly Sunny | 6 mph N | 5% |
| Friday Night | 39°F | Mostly Cloudy | 0 to 3 mph N | 1% |
| Saturday | 58°F | Partly Sunny | 2 mph NW | 1% |
| Saturday Night | 37°F | Partly Cloudy | 1 mph W | 4% |
| Sunday | 64°F | Sunny | 1 to 5 mph W | 7% |
| Sunday Night | 38°F | Mostly Clear | 2 mph W | 2% |
| Monday | 68°F | Sunny | 2 to 6 mph SW | 0% |
| Monday Night | 42°F | Mostly Clear | 3 mph SW | 0% |
| Tuesday | 70°F | Sunny | 3 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Hartsburg, MO
Last spring frost
Apr 7
First fall frost
Oct 29
Growing season
205 days
Hardiness zone
6b
Explore more for Hartsburg, MO: full frost dates · planting calendar · Missouri frost dates
Climate data from the nearest NOAA station, Columbia Rgnl Ap, Mo (8.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.