Harman US

Long Lake, SD Weather & Growing Conditions

Tonight
33°F
Cloudy then Patchy Fog
Patchy fog after midnight. Cloudy. Low around 33, with temperatures rising to around 36 overnight. North northwest wind 18 to 23 mph.

7-day forecast

WhenTempForecastWindPrecip
Tonight 33°F Cloudy then Patchy Fog 18 to 23 mph NNW 10%
Wednesday 45°F Patchy Fog then Cloudy 22 mph NNW 4%
Wednesday Night 30°F Mostly Cloudy then Patchy Fog 16 to 21 mph NNW 1%
Thursday 42°F Patchy Fog then Mostly Sunny 8 to 16 mph NNE 0%
Thursday Night 25°F Mostly Cloudy 3 to 7 mph ESE 0%
Friday 43°F Mostly Sunny 5 to 10 mph SSW 0%
Friday Night 29°F Partly Cloudy 9 mph SW 0%
Saturday 54°F Mostly Sunny 9 to 18 mph W 4%
Saturday Night 32°F Mostly Clear 9 to 13 mph WNW 2%
Sunday 55°F Sunny 9 to 13 mph SW 1%
Sunday Night 37°F Partly Cloudy 10 to 14 mph SW 0%
Monday 57°F Mostly Sunny 13 to 22 mph WNW 0%
Monday Night 34°F Partly Cloudy 7 to 10 mph WNW 0%
Tuesday 52°F Mostly Sunny 7 to 13 mph WSW 0%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Long Lake, SD

Last spring frost
May 10
First fall frost
Sep 30
Growing season
143 days
Hardiness zone
4b

Explore more for Long Lake, SD: full frost dates · planting calendar · South Dakota frost dates

Climate data from the nearest NOAA station, Aberdeen 35 Wnw, Sd (11.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.