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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.

Overnight
74°F
Partly Cloudy
Partly cloudy, with a low around 74. South wind around 3 mph.

7-day forecast for Hartsburg

WhenTempForecastWindPrecip
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

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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.