Armstrong, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Armstrong, a city in Howard County, Missouri.
Today
91°F
Sunny
Sunny, with a high near 91. Heat index values as high as 97. South southwest wind 3 to 7 mph.
7-day forecast for Armstrong
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 91°F | Sunny | 3 to 7 mph SSW | 0% |
| Tonight | 71°F | Partly Cloudy | 1 to 6 mph SE | 12% |
| Wednesday | 89°F | Chance Showers And Thunderstorms | 7 mph SSE | 46% |
| Wednesday Night | 68°F | Showers And Thunderstorms Likely | 7 mph NNE | 82% |
| Thursday | 86°F | Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 5 mph WSW | 82% |
| Thursday Night | 67°F | Partly Cloudy | 3 mph ESE | 6% |
| Friday | 88°F | Mostly Sunny | 5 mph S | 14% |
| Friday Night | 69°F | Mostly Clear then Slight Chance Showers And Thunderstorms | 3 mph S | 21% |
| Saturday | 91°F | Slight Chance Showers And Thunderstorms then Sunny | 5 to 8 mph SSW | 21% |
| Saturday Night | 72°F | Mostly Clear | 6 to 9 mph S | 5% |
| Sunday | 93°F | Sunny | 9 to 14 mph SSW | 3% |
| Sunday Night | 73°F | Mostly Clear | 10 mph SSW | 4% |
| Monday | 94°F | Sunny | 9 to 14 mph SSW | 5% |
| Monday Night | 75°F | Mostly Clear | 12 mph SSW | 8% |
Forecast source: National Weather Service (api.weather.gov) for Armstrong (39.269, -92.704). Updated through the day.
Growing snapshot for Armstrong
Last spring frost
Apr 12
First fall frost
Oct 22
Growing season
190 days
Hardiness zone
6b
More local growing data for Armstrong: nearby ZIP 65230 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Salisbury, Mo (11.6 mi from Armstrong). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.