Hartsburg, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hartsburg, a town in Boone County, Missouri.
Today
92°F
Sunny
Sunny, with a high near 92. South wind around 7 mph.
7-day forecast for Hartsburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 92°F | Sunny | 7 mph S | 0% |
| Tonight | 72°F | Mostly Clear | 2 to 6 mph SE | 4% |
| Wednesday | 92°F | Mostly Sunny then Scattered Showers And Thunderstorms | 5 mph S | 26% |
| Wednesday Night | 70°F | Chance Showers And Thunderstorms | 5 mph SE | 78% |
| Thursday | 89°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 3 mph S | 78% |
| Thursday Night | 71°F | Partly Cloudy | 2 mph S | 12% |
| Friday | 90°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 0 to 3 mph S | 18% |
| Friday Night | 71°F | Chance Showers And Thunderstorms | 2 mph S | 25% |
| Saturday | 93°F | Chance Showers And Thunderstorms then Sunny | 1 to 5 mph SW | 25% |
| Saturday Night | 73°F | Mostly Clear | 3 mph S | 4% |
| Sunday | 95°F | Sunny | 3 to 8 mph SW | 3% |
| Sunday Night | 74°F | Mostly Clear | 6 mph S | 3% |
| Monday | 96°F | Sunny | 3 to 8 mph S | 3% |
| Monday Night | 75°F | Mostly Clear | 6 mph S | 5% |
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 Aug 4, 2026.