Harman US

Armour, SD Weather & Growing Conditions

Tonight
61°F
Cloudy
Cloudy, with a low around 61. North northwest wind 5 to 10 mph.

7-day forecast

WhenTempForecastWindPrecip
Tonight 61°F Cloudy 5 to 10 mph NNW 13%
Saturday 68°F Patchy Fog then Cloudy 10 mph N 14%
Saturday Night 56°F Mostly Cloudy 10 mph NNE 10%
Sunday 63°F Rain Showers Likely 10 to 15 mph NE 57%
Sunday Night 53°F Showers And Thunderstorms 10 mph ENE 83%
Monday 61°F Rain Showers 10 mph ENE 83%
Monday Night 48°F Mostly Cloudy 5 to 10 mph E 10%
Tuesday 65°F Mostly Cloudy 5 to 15 mph SE 9%
Tuesday Night 51°F Mostly Cloudy 10 mph SE 9%
Wednesday 69°F Chance Rain Showers 15 mph SSE 27%
Wednesday Night 54°F Chance Showers And Thunderstorms 10 to 15 mph SSE 44%
Thursday 71°F Chance Rain Showers then Partly Sunny 10 mph SSE 44%
Thursday Night 55°F Mostly Cloudy 10 mph SE 9%
Friday 71°F Partly Sunny 10 to 15 mph SE 11%

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.