Harman US

Astoria, SD Weather & Growing Conditions

Overnight
55°F
Areas Of Fog
Areas of fog and a chance of drizzle. Cloudy, with a low around 55. Northeast wind around 7 mph. Chance of precipitation is 30%.

7-day forecast

WhenTempForecastWindPrecip
Overnight 55°F Areas Of Fog 7 mph NE 31%
Saturday 62°F Areas Of Fog 7 to 14 mph NNE 31%
Saturday Night 51°F Patchy Fog then Mostly Cloudy 9 to 13 mph NNE 15%
Sunday 64°F Mostly Cloudy 12 to 16 mph NE 11%
Sunday Night 48°F Cloudy then Slight Chance Rain Showers 8 to 13 mph ENE 18%
Monday 61°F Slight Chance Rain Showers 8 to 12 mph ENE 18%
Monday Night 44°F Partly Cloudy 3 to 8 mph E 7%
Tuesday 64°F Mostly Sunny 3 to 12 mph SE 4%
Tuesday Night 45°F Partly Cloudy 9 mph SE 2%
Wednesday 67°F Mostly Sunny 8 to 14 mph SSE 6%
Wednesday Night 50°F Partly Cloudy then Slight Chance Rain Showers 9 mph SSE 24%
Thursday 69°F Slight Chance Rain Showers 9 to 14 mph SSE 24%
Thursday Night 53°F Mostly Cloudy 8 mph SSE 13%
Friday 71°F Partly Sunny 8 to 13 mph SSE 13%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Astoria, SD

Last spring frost
May 6
First fall frost
Oct 3
Growing season
150 days
Hardiness zone
4b

Explore more for Astoria, SD: full frost dates · planting calendar · South Dakota frost dates

Climate data from the nearest NOAA station, Astoria 4S, Sd (4.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.