Armour, SD Weather & Growing Conditions
This Afternoon
66°F
Cloudy
Cloudy, with a high near 66. North wind around 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 66°F | Cloudy | 10 mph N | 6% |
| Tonight | 55°F | Cloudy then Slight Chance Rain Showers | 10 mph NNE | 15% |
| Sunday | 64°F | Chance Rain Showers | 10 to 15 mph NE | 45% |
| Sunday Night | 51°F | Rain Showers | 10 mph ENE | 76% |
| Monday | 61°F | Rain Showers | 10 mph E | 76% |
| Monday Night | 46°F | Mostly Cloudy | 5 to 10 mph E | 9% |
| Tuesday | 65°F | Partly Sunny | 5 to 15 mph SE | 7% |
| Tuesday Night | 48°F | Partly Cloudy | 10 to 15 mph SE | 7% |
| Wednesday | 69°F | Partly Sunny then Slight Chance Rain Showers | 15 mph SSE | 19% |
| Wednesday Night | 53°F | Chance Showers And Thunderstorms | 10 to 15 mph SE | 42% |
| Thursday | 71°F | Chance Showers And Thunderstorms | 10 to 15 mph SSE | 42% |
| Thursday Night | 54°F | Slight Chance Rain Showers | 10 mph SE | 18% |
| Friday | 73°F | Slight Chance Rain Showers then Partly Sunny | 10 to 15 mph SE | 17% |
| Friday Night | 56°F | Mostly Cloudy then Slight Chance Rain Showers | 15 mph SE | 21% |
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 Sep 19, 2026.