Clear Lake, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Clear Lake, a city in Deuel County, South Dakota.
Today
69°F
Mostly Sunny
Mostly sunny, with a high near 69. Northwest wind 6 to 10 mph.
7-day forecast for Clear Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 69°F | Mostly Sunny | 6 to 10 mph NW | 2% |
| Tonight | 51°F | Mostly Clear | 3 to 7 mph WSW | 0% |
| Wednesday | 75°F | Sunny | 7 to 13 mph SW | 0% |
| Wednesday Night | 57°F | Mostly Clear | 7 to 14 mph SSW | 0% |
| Thursday | 80°F | Sunny | 13 to 17 mph SSW | 2% |
| Thursday Night | 61°F | Mostly Clear | 9 to 15 mph SSW | 4% |
| Friday | 82°F | Sunny | 10 to 15 mph SSW | 12% |
| Friday Night | 61°F | Mostly Clear | 8 mph SSE | 12% |
| Saturday | 82°F | Sunny | 6 to 14 mph SSE | 7% |
| Saturday Night | 62°F | Slight Chance Showers And Thunderstorms | 9 to 13 mph ESE | 24% |
| Sunday | 80°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 9 to 13 mph E | 23% |
| Sunday Night | 62°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 10 mph E | 22% |
| Monday | 79°F | Slight Chance Showers And Thunderstorms | 9 to 14 mph ENE | 22% |
| Monday Night | 61°F | Slight Chance Showers And Thunderstorms | 7 to 14 mph NE | 16% |
Forecast source: National Weather Service (api.weather.gov) for Clear Lake (44.756, -96.690). Updated through the day.
Growing snapshot for Clear Lake
Last spring frost
May 7
First fall frost
Oct 1
Growing season
146 days
Hardiness zone
4b
More local growing data for Clear Lake: nearby ZIP 57226 weather · frost dates · planting calendar · South Dakota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Clear Lake, Sd (3.1 mi from Clear Lake). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.