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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| 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.