Hartsburg, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hartsburg, a town in Boone County, Missouri.
This Afternoon
72°F
Chance Light Rain
A chance of rain and a slight chance of thunderstorms before 4pm, then a slight chance of thunderstorms and a slight chance of rain between 4pm and 5pm. Cloudy. High near 72, with temperatures falling to around 65 in the afternoon. South wind 9 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.
7-day forecast for Hartsburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 72°F | Chance Light Rain | 9 to 13 mph S | 35% |
| Tonight | 50°F | Chance Rain Showers | 8 mph SW | 12% |
| Wednesday | 62°F | Mostly Cloudy | 7 to 12 mph W | 3% |
| Wednesday Night | 42°F | Mostly Clear | 5 mph W | 0% |
| Thursday | 64°F | Mostly Sunny | 3 to 8 mph W | 8% |
| Thursday Night | 42°F | Mostly Cloudy | 5 mph NW | 8% |
| Friday | 59°F | Partly Sunny | 6 mph NW | 5% |
| Friday Night | 39°F | Mostly Cloudy | 0 to 3 mph N | 1% |
| Saturday | 59°F | Partly Sunny | 2 mph NW | 1% |
| Saturday Night | 37°F | Partly Cloudy | 1 mph W | 4% |
| Sunday | 65°F | Sunny | 1 to 5 mph W | 7% |
| Sunday Night | 37°F | Mostly Clear | 2 mph W | 2% |
| Monday | 70°F | Sunny | 2 to 6 mph SW | 0% |
| Monday Night | 42°F | Mostly Clear | 3 mph SW | 0% |
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 Nov 3, 2026.