Armour, SD Weather & Growing Conditions
This Afternoon
49°F
Chance Rain Showers
A chance of rain showers. Cloudy. High near 49, with temperatures falling to around 46 in the afternoon. North northwest wind around 20 mph, with gusts as high as 35 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 49°F | Chance Rain Showers | 20 mph NNW | 45% |
| Tonight | 36°F | Chance Rain Showers | 15 to 20 mph NW | 29% |
| Wednesday | 46°F | Rain Showers Likely | 15 to 20 mph NW | 60% |
| Wednesday Night | 35°F | Chance Rain Showers then Mostly Cloudy | 15 mph NW | 26% |
| Thursday | 48°F | Partly Sunny | 10 to 15 mph NNW | 4% |
| Thursday Night | 28°F | Mostly Cloudy | 0 to 10 mph N | 0% |
| Friday | 49°F | Mostly Sunny | 0 to 5 mph SE | 0% |
| Friday Night | 30°F | Partly Cloudy | 5 mph S | 0% |
| Saturday | 59°F | Sunny | 5 to 10 mph W | 5% |
| Saturday Night | 34°F | Mostly Clear | 5 mph WNW | 3% |
| Sunday | 61°F | Sunny | 5 to 10 mph SW | 0% |
| Sunday Night | 39°F | Mostly Clear | 10 mph SSW | 0% |
| Monday | 62°F | Sunny | 10 to 15 mph WNW | 0% |
| Monday Night | 37°F | Mostly Clear | 5 mph WNW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Armour, SD
Last spring frost
May 3
First fall frost
Oct 6
Growing season
157 days
Hardiness zone
5a
Explore more for Armour, SD: full frost dates · planting calendar · South Dakota frost dates
Climate data from the nearest NOAA station, Armour, Sd (0.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.