Timber Lake, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Timber Lake, a city in Dewey County, South Dakota.
Today
46°F
Partly Sunny
Partly sunny. High near 46, with temperatures falling to around 40 in the afternoon. North northwest wind 13 to 23 mph, with gusts as high as 32 mph.
7-day forecast for Timber Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 46°F | Partly Sunny | 13 to 23 mph NNW | 1% |
| Tonight | 29°F | Mostly Cloudy | 12 to 15 mph NNW | 0% |
| Wednesday | 49°F | Mostly Cloudy | 15 to 18 mph NNW | 0% |
| Wednesday Night | 30°F | Mostly Cloudy | 12 to 16 mph NNW | 0% |
| Thursday | 48°F | Mostly Sunny | 5 to 10 mph NNE | 0% |
| Thursday Night | 27°F | Partly Cloudy | 7 mph SE | 0% |
| Friday | 49°F | Mostly Sunny | 7 mph SSW | 0% |
| Friday Night | 31°F | Partly Cloudy | 5 to 10 mph SW | 3% |
| Saturday | 57°F | Sunny | 10 to 21 mph W | 3% |
| Saturday Night | 32°F | Mostly Clear | 7 to 10 mph W | 1% |
| Sunday | 58°F | Sunny | 7 to 12 mph SSW | 0% |
| Sunday Night | 39°F | Mostly Clear | 8 to 14 mph WSW | 0% |
| Monday | 58°F | Sunny | 6 to 17 mph WNW | 0% |
| Monday Night | 34°F | Partly Cloudy | 6 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov) for Timber Lake (45.429, -101.071). Updated through the day.
Growing snapshot for Timber Lake
Last spring frost
May 10
First fall frost
Sep 30
Growing season
141 days
Hardiness zone
4b
More local growing data for Timber Lake: nearby ZIP 57656 weather · frost dates · planting calendar · South Dakota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Timber Lake, Sd (1.5 mi from Timber Lake). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.