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.
This Afternoon
64°F
Chance Rain Showers
A chance of rain showers and patchy fog before 4pm, then patchy fog and a slight chance of rain showers. Cloudy, with a high near 64. East wind around 10 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for De Smet
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 64°F | Chance Rain Showers | 10 mph E | 26% |
| Tonight | 57°F | Patchy Fog | 5 to 10 mph ENE | 16% |
| Saturday | 65°F | Patchy Fog then Cloudy | 10 mph NE | 10% |
| Saturday Night | 53°F | Mostly Cloudy | 10 mph NE | 2% |
| Sunday | 63°F | Mostly Cloudy then Chance Rain Showers | 10 to 15 mph ENE | 32% |
| Sunday Night | 50°F | Chance Rain Showers | 10 to 15 mph ENE | 50% |
| Monday | 60°F | Chance Rain Showers | 10 mph E | 50% |
| Monday Night | 47°F | Mostly Cloudy | 5 to 10 mph E | 6% |
| Tuesday | 64°F | Partly Sunny | 10 mph ESE | 2% |
| Tuesday Night | 49°F | Mostly Cloudy | 10 mph SE | 4% |
| Wednesday | 67°F | Partly Sunny | 10 to 15 mph SSE | 11% |
| Wednesday Night | 52°F | Chance Rain Showers | 10 mph SSE | 34% |
| Thursday | 67°F | Slight Chance Showers And Thunderstorms | 10 mph SSE | 34% |
| Thursday Night | 53°F | Mostly Cloudy | 5 to 10 mph SE | 10% |
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 Sep 18, 2026.