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
66°F
Patchy Fog then Slight Chance Rain Showers
Patchy fog and a slight chance of drizzle before noon, then a slight chance of rain showers. Cloudy, with a high near 66. Northeast wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
7-day forecast for Timber Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 66°F | Patchy Fog then Slight Chance Rain Showers | 10 to 14 mph NE | 16% |
| Tonight | 51°F | Rain Showers Likely | 10 to 15 mph ENE | 59% |
| Sunday | 61°F | Rain Showers Likely | 13 to 16 mph E | 72% |
| Sunday Night | 48°F | Rain Showers Likely | 9 to 13 mph E | 57% |
| Monday | 65°F | Mostly Cloudy | 9 to 13 mph ESE | 12% |
| Monday Night | 46°F | Mostly Cloudy | 14 mph SE | 5% |
| Tuesday | 68°F | Partly Sunny | 15 to 24 mph SE | 4% |
| Tuesday Night | 51°F | Mostly Cloudy | 20 to 23 mph SE | 9% |
| Wednesday | 73°F | Mostly Sunny then Slight Chance Rain Showers | 23 mph SE | 16% |
| Wednesday Night | 52°F | Chance Showers And Thunderstorms then Partly Cloudy | 9 to 20 mph SE | 29% |
| Thursday | 76°F | Mostly Sunny | 9 to 13 mph SE | 12% |
| Thursday Night | 54°F | Partly Cloudy | 13 mph SE | 9% |
| Friday | 76°F | Partly Sunny | 13 to 22 mph SE | 6% |
| Friday Night | 55°F | Mostly Cloudy then Slight Chance Rain Showers | 18 to 22 mph SSE | 18% |
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 Sep 19, 2026.