Hartsburg, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hartsburg, a town in Boone County, Missouri.
Overnight
74°F
Partly Cloudy
Partly cloudy, with a low around 74. South wind around 3 mph.
7-day forecast for Hartsburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 74°F | Partly Cloudy | 3 mph S | 1% |
| Saturday | 99°F | Mostly Sunny | 3 to 8 mph SW | 1% |
| Saturday Night | 71°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph SW | 18% |
| Sunday | 90°F | Chance Showers And Thunderstorms | 1 to 5 mph NW | 50% |
| Sunday Night | 67°F | Showers And Thunderstorms | 5 mph N | 85% |
| Monday | 76°F | Showers And Thunderstorms | 3 to 8 mph NE | 85% |
| Monday Night | 59°F | Chance Rain Showers | 3 to 8 mph NE | 33% |
| Tuesday | 71°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 8 mph NE | 15% |
| Tuesday Night | 53°F | Partly Cloudy | 2 to 7 mph NE | 1% |
| Wednesday | 75°F | Mostly Sunny | 2 to 6 mph NE | 1% |
| Wednesday Night | 55°F | Partly Cloudy | 1 to 5 mph NE | 1% |
| Thursday | 77°F | Mostly Sunny | 1 to 5 mph NE | 6% |
| Thursday Night | 59°F | Partly Cloudy | 3 mph NE | 9% |
| Friday | 77°F | Slight Chance Rain Showers | 1 to 5 mph E | 17% |
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.