Hartsburg, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hartsburg, a town in Boone County, Missouri.
Tonight
74°F
Partly Cloudy
Partly cloudy, with a low around 74. South wind around 6 mph.
7-day forecast for Hartsburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 74°F | Partly Cloudy | 6 mph S | 4% |
| Saturday | 100°F | Partly Sunny | 3 to 8 mph SW | 3% |
| Saturday Night | 72°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph SW | 21% |
| Sunday | 91°F | Chance Rain Showers | 5 mph W | 49% |
| Sunday Night | 67°F | Showers And Thunderstorms | 5 mph NE | 81% |
| Monday | 77°F | Showers And Thunderstorms | 3 to 7 mph N | 81% |
| Monday Night | 60°F | Chance Showers And Thunderstorms | 3 to 7 mph N | 33% |
| Tuesday | 72°F | Partly Sunny | 7 mph N | 13% |
| Tuesday Night | 54°F | Mostly Cloudy | 2 to 6 mph NE | 4% |
| Wednesday | 75°F | Mostly Sunny | 5 mph NE | 2% |
| Wednesday Night | 55°F | Partly Cloudy | 3 mph NE | 1% |
| Thursday | 76°F | Mostly Sunny | 1 to 5 mph NE | 6% |
| Thursday Night | 58°F | Partly Cloudy | 3 mph NE | 5% |
| Friday | 77°F | Mostly Sunny | 1 to 5 mph NE | 9% |
Forecast source: National Weather Service (api.weather.gov) for Hartsburg (38.697, -92.307). Updated through the day.
Growing snapshot for Hartsburg
Last spring frost
Apr 7
First fall frost
Oct 29
Growing season
205 days
Hardiness zone
6b
More local growing data for Hartsburg: nearby ZIP 65039 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Columbia Rgnl Ap, Mo (8.4 mi from Hartsburg). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.