De Smet, SD Weather & Growing Conditions
Tonight
35°F
Rain Showers Likely
Rain showers likely. Cloudy. Low around 35, with temperatures rising to around 39 overnight. North northwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 35°F | Rain Showers Likely | 15 to 20 mph NNW | 66% |
| Wednesday | 43°F | Rain Showers | 15 to 20 mph NW | 82% |
| Wednesday Night | 32°F | Chance Rain Showers then Mostly Cloudy | 15 mph NNW | 30% |
| Thursday | 43°F | Partly Sunny | 10 to 15 mph N | 0% |
| Thursday Night | 27°F | Mostly Cloudy | 0 to 10 mph NE | 0% |
| Friday | 43°F | Mostly Sunny | 0 to 5 mph SE | 0% |
| Friday Night | 28°F | Partly Cloudy | 5 mph S | 0% |
| Saturday | 52°F | Sunny | 5 to 10 mph SW | 0% |
| Saturday Night | 32°F | Mostly Clear | 5 mph W | 3% |
| Sunday | 55°F | Sunny | 5 to 10 mph SW | 1% |
| Sunday Night | 37°F | Mostly Clear | 10 mph S | 0% |
| Monday | 58°F | Sunny | 10 to 15 mph W | 0% |
| Monday Night | 35°F | Mostly Clear | 5 mph NW | 0% |
| Tuesday | 55°F | Mostly Sunny | 5 to 10 mph SW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for De Smet, SD
Last spring frost
May 5
First fall frost
Oct 4
Growing season
151 days
Hardiness zone
4b
Explore more for De Smet, SD: full frost dates · planting calendar · South Dakota frost dates
Climate data from the nearest NOAA station, De Smet, Sd (1.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.