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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

WhenTempForecastWindPrecip
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

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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.