De Smet, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for De Smet, a city in Kingsbury County, South Dakota.
Tonight
35°F
Rain Showers
Rain showers. 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 90%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for De Smet
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 35°F | Rain Showers | 15 to 20 mph NNW | 91% |
| Wednesday | 43°F | Rain Showers | 15 to 20 mph NW | 92% |
| Wednesday Night | 32°F | Chance Rain Showers then Mostly Cloudy | 15 mph NNW | 34% |
| Thursday | 44°F | Partly Sunny | 10 to 15 mph N | 3% |
| Thursday Night | 28°F | Mostly Cloudy | 0 to 10 mph NE | 0% |
| Friday | 45°F | Partly Sunny | 0 to 5 mph SSE | 0% |
| Friday Night | 29°F | Partly Cloudy | 5 mph S | 0% |
| Saturday | 54°F | Mostly Sunny | 5 to 10 mph WSW | 4% |
| Saturday Night | 32°F | Mostly Clear | 5 mph W | 4% |
| Sunday | 55°F | Sunny | 5 to 10 mph SW | 1% |
| Sunday Night | 36°F | Mostly Clear | 10 mph SSW | 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) for De Smet (44.386, -97.550). Updated through the day.
Growing snapshot for De Smet
Last spring frost
May 5
First fall frost
Oct 4
Growing season
151 days
Hardiness zone
4b
More local growing data for De Smet: nearby ZIP 57231 weather · frost dates · planting calendar · South Dakota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, De Smet, Sd (1.7 mi from De Smet). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.