Harman US

Armstrong, MO Weather & Growing Conditions

Tonight
74°F
Partly Cloudy
Partly cloudy, with a low around 74. South wind around 7 mph.

7-day forecast

WhenTempForecastWindPrecip
Tonight 74°F Partly Cloudy 7 mph S 3%
Saturday 96°F Mostly Sunny 7 to 12 mph SSW 2%
Saturday Night 69°F Slight Chance Showers And Thunderstorms 3 to 7 mph SW 49%
Sunday 85°F Chance Showers And Thunderstorms 3 to 7 mph WNW 44%
Sunday Night 63°F Showers And Thunderstorms Likely 9 mph NNE 70%
Monday 72°F Showers And Thunderstorms Likely 10 mph NNE 70%
Monday Night 56°F Chance Rain Showers 7 to 10 mph NNE 40%
Tuesday 68°F Mostly Cloudy 10 mph NNE 13%
Tuesday Night 51°F Mostly Cloudy 5 to 9 mph NNE 5%
Wednesday 72°F Mostly Sunny 7 mph NE 2%
Wednesday Night 53°F Partly Cloudy 2 to 6 mph NE 3%
Thursday 74°F Partly Sunny 5 mph NE 6%
Thursday Night 56°F Partly Cloudy then Slight Chance Rain Showers 3 mph ENE 15%
Friday 74°F Slight Chance Rain Showers then Mostly Sunny 6 mph ENE 15%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Armstrong, MO

Last spring frost
Apr 12
First fall frost
Oct 22
Growing season
190 days
Hardiness zone
6b

Explore more for Armstrong, MO: full frost dates · planting calendar · Missouri frost dates

Climate data from the nearest NOAA station, Salisbury, Mo (11.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.