Harman US

Okaton, SD Weather & Growing Conditions

This Afternoon
48°F
Partly Sunny
Partly sunny. High near 48, with temperatures falling to around 43 in the afternoon. North northwest wind around 17 mph, with gusts as high as 28 mph.

7-day forecast

WhenTempForecastWindPrecip
This Afternoon 48°F Partly Sunny 17 mph NNW 0%
Tonight 33°F Mostly Cloudy 13 to 16 mph NNW 0%
Wednesday 50°F Mostly Cloudy 16 to 20 mph NW 0%
Wednesday Night 34°F Mostly Cloudy 15 mph NW 1%
Thursday 51°F Mostly Sunny 7 to 13 mph N 0%
Thursday Night 29°F Mostly Clear 6 to 9 mph ESE 0%
Friday 52°F Mostly Sunny 6 to 9 mph W 0%
Friday Night 32°F Mostly Clear 5 to 10 mph W 0%
Saturday 61°F Sunny 12 to 18 mph W 5%
Saturday Night 34°F Mostly Clear 12 mph W 0%
Sunday 66°F Sunny 13 mph SSW 0%
Sunday Night 40°F Mostly Clear 12 to 15 mph SW 0%
Monday 62°F Sunny 9 to 18 mph NW 0%
Monday Night 37°F Partly Cloudy 9 mph W 0%

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

Growing snapshot for Okaton, SD

Last spring frost
May 3
First fall frost
Oct 9
Growing season
158 days
Hardiness zone
5a

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

Climate data from the nearest NOAA station, Murdo, Sd (12.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.