Clear Lake, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Clear Lake, a community in Marshall County, South Dakota.
Tonight
36°F
Areas Of Fog then Light Rain Likely
Areas of fog and a chance of rain before 9pm, then rain likely and areas of fog between 9pm and 1am, then areas of fog and a chance of rain between 1am and 2am, then rain and areas of fog. Cloudy, with a low around 36. North northwest wind 14 to 20 mph, with gusts as high as 36 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Clear Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 36°F | Areas Of Fog then Light Rain Likely | 14 to 20 mph NNW | 84% |
| Wednesday | 41°F | Light Rain | 17 to 21 mph NNW | 87% |
| Wednesday Night | 31°F | Patchy Fog | 13 to 16 mph NNW | 22% |
| Thursday | 37°F | Areas Of Fog then Partly Sunny | 9 to 16 mph N | 4% |
| Thursday Night | 27°F | Mostly Cloudy | 2 to 8 mph ENE | 1% |
| Friday | 41°F | Partly Sunny | 2 to 6 mph SSW | 0% |
| Friday Night | 31°F | Partly Cloudy | 5 to 8 mph SW | 0% |
| Saturday | 51°F | Mostly Sunny | 8 to 15 mph WSW | 6% |
| Saturday Night | 34°F | Partly Cloudy | 10 mph W | 5% |
| Sunday | 53°F | Mostly Sunny | 10 mph WSW | 2% |
| Sunday Night | 39°F | Partly Cloudy | 8 to 13 mph SW | 0% |
| Monday | 54°F | Mostly Sunny | 12 to 18 mph W | 0% |
| Monday Night | 36°F | Mostly Clear | 6 to 9 mph W | 0% |
| Tuesday | 51°F | Mostly Sunny | 6 to 9 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov) for Clear Lake (45.704, -97.356). Updated through the day.
Growing snapshot for Clear Lake
Last spring frost
May 2
First fall frost
Oct 9
Growing season
160 days
Hardiness zone
4b
More local growing data for Clear Lake: nearby ZIP 57232 weather · frost dates · planting calendar · South Dakota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Roy Lake, Sd (6.1 mi from Clear Lake). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.