Whitehorse, SD Weather & Growing Conditions
This Afternoon
52°F
Mostly Cloudy
Mostly cloudy. High near 52, with temperatures falling to around 47 in the afternoon. North northwest wind around 18 mph, with gusts as high as 26 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 52°F | Mostly Cloudy | 18 mph NNW | 0% |
| Tonight | 30°F | Mostly Cloudy then Patchy Fog | 9 to 15 mph NNW | 0% |
| Thursday | 44°F | Patchy Fog then Mostly Sunny | 5 to 9 mph NNE | 0% |
| Thursday Night | 26°F | Partly Cloudy | 6 mph ESE | 0% |
| Friday | 48°F | Mostly Sunny | 8 mph SSE | 0% |
| Friday Night | 30°F | Mostly Clear | 6 mph SSW | 0% |
| Saturday | 61°F | Sunny | 7 to 15 mph W | 0% |
| Saturday Night | 32°F | Mostly Clear | 3 to 8 mph W | 0% |
| Sunday | 61°F | Sunny | 3 to 13 mph SSW | 0% |
| Sunday Night | 38°F | Mostly Clear | 9 mph WSW | 0% |
| Monday | 61°F | Sunny | 7 to 15 mph NW | 0% |
| Monday Night | 34°F | Partly Cloudy | 6 mph WNW | 1% |
| Tuesday | 56°F | Mostly Sunny | 7 mph S | 1% |
| Tuesday Night | 36°F | Partly Cloudy | 6 mph S | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Whitehorse, SD
Last spring frost
May 10
First fall frost
Sep 30
Growing season
141 days
Hardiness zone
4b
Explore more for Whitehorse, SD: full frost dates · planting calendar · South Dakota frost dates
Climate data from the nearest NOAA station, Timber Lake, Sd (13 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.