Harman US

Oacoma, SD Weather & Growing Conditions

Overnight
60°F
Patchy Fog
Patchy fog and a slight chance of drizzle after 2am. Cloudy. Low around 60, with temperatures rising to around 63 overnight. North wind around 6 mph.

7-day forecast

WhenTempForecastWindPrecip
Overnight 60°F Patchy Fog 6 mph N 10%
Saturday 68°F Patchy Fog then Cloudy 7 to 13 mph NNE 7%
Saturday Night 53°F Cloudy 8 to 13 mph NE 13%
Sunday 63°F Rain Showers Likely 10 to 14 mph ENE 65%
Sunday Night 49°F Rain Showers 9 to 13 mph ENE 89%
Monday 63°F Rain Showers 12 mph E 89%
Monday Night 46°F Mostly Cloudy 7 to 10 mph ESE 9%
Tuesday 67°F Partly Sunny 7 to 17 mph SE 9%
Tuesday Night 53°F Mostly Cloudy then Slight Chance Rain Showers 16 mph SE 16%
Wednesday 72°F Chance Rain Showers 15 to 20 mph SSE 30%
Wednesday Night 55°F Chance Rain Showers 10 to 17 mph SSE 30%
Thursday 73°F Chance Rain Showers then Partly Sunny 12 mph SSE 30%
Thursday Night 56°F Partly Cloudy 10 mph SE 9%
Friday 74°F Partly Sunny 9 to 16 mph SE 10%

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

Growing snapshot for Oacoma, SD

Last spring frost
May 1
First fall frost
Oct 7
Growing season
158 days
Hardiness zone
5a

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

Climate data from the nearest NOAA station, Chamberlain Muni Ap, Sd (5.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.