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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

WhenTempForecastWindPrecip
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

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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.