Onaka, SD Weather & Growing Conditions
This Afternoon
45°F
Cloudy
Cloudy. High near 45, with temperatures falling to around 42 in the afternoon. North northwest wind around 17 mph, with gusts as high as 26 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 45°F | Cloudy | 17 mph NNW | 0% |
| Tonight | 34°F | Cloudy then Patchy Fog | 13 to 16 mph NNW | 7% |
| Wednesday | 45°F | Mostly Cloudy | 18 mph NNW | 10% |
| Wednesday Night | 31°F | Mostly Cloudy | 12 to 17 mph NNW | 3% |
| Thursday | 44°F | Mostly Sunny | 7 to 12 mph N | 0% |
| Thursday Night | 25°F | Partly Cloudy | 7 mph ESE | 0% |
| Friday | 44°F | Partly Sunny | 5 to 8 mph S | 0% |
| Friday Night | 29°F | Partly Cloudy | 7 mph SW | 0% |
| Saturday | 56°F | Mostly Sunny | 8 to 15 mph W | 4% |
| Saturday Night | 32°F | Mostly Clear | 8 to 12 mph W | 1% |
| Sunday | 57°F | Sunny | 10 mph SW | 0% |
| Sunday Night | 37°F | Mostly Clear | 9 to 13 mph SW | 0% |
| Monday | 57°F | Sunny | 12 to 17 mph NW | 0% |
| Monday Night | 34°F | Partly Cloudy | 9 mph WNW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Onaka, SD
Last spring frost
May 7
First fall frost
Oct 3
Growing season
148 days
Hardiness zone
4b
Explore more for Onaka, SD: full frost dates · planting calendar · South Dakota frost dates
Climate data from the nearest NOAA station, Roscoe, Sd (18.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.