Clear Lake, SD Weather & Growing Conditions
Tonight
55°F
Areas Of Drizzle
Areas of drizzle and areas of fog before 2am, then widespread fog and areas of drizzle between 2am and 4am, then areas of drizzle and areas of fog between 4am and 5am, then areas of fog and patchy drizzle. Cloudy, with a low around 55. East northeast wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 55°F | Areas Of Drizzle | 10 mph ENE | 44% |
| Saturday | 63°F | Areas Of Fog | 10 to 14 mph NE | 19% |
| Saturday Night | 52°F | Mostly Cloudy | 9 to 13 mph NE | 7% |
| Sunday | 64°F | Mostly Cloudy | 12 to 15 mph NE | 10% |
| Sunday Night | 49°F | Chance Rain Showers | 8 to 12 mph ENE | 41% |
| Monday | 60°F | Chance Rain Showers | 10 mph E | 41% |
| Monday Night | 45°F | Mostly Cloudy | 5 to 8 mph E | 6% |
| Tuesday | 63°F | Partly Sunny | 5 to 12 mph ESE | 2% |
| Tuesday Night | 47°F | Partly Cloudy | 9 mph SE | 2% |
| Wednesday | 66°F | Mostly Sunny | 7 to 14 mph SSE | 10% |
| Wednesday Night | 51°F | Chance Rain Showers | 8 mph SSE | 29% |
| Thursday | 69°F | Chance Rain Showers | 7 to 10 mph S | 29% |
| Thursday Night | 53°F | Partly Cloudy | 7 mph SSE | 9% |
| Friday | 71°F | Partly Sunny | 8 to 13 mph SE | 9% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Clear Lake, SD
Last spring frost
May 7
First fall frost
Oct 1
Growing season
146 days
Hardiness zone
4b
Explore more for Clear Lake, SD: full frost dates · planting calendar · South Dakota frost dates
Climate data from the nearest NOAA station, Clear Lake, Sd (3.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.