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.
Overnight
53°F
Partly Cloudy
Partly cloudy, with a low around 53. Northwest wind around 8 mph.
7-day forecast for Clear Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 53°F | Partly Cloudy | 8 mph NW | 0% |
| Tuesday | 70°F | Mostly Sunny | 7 to 12 mph WNW | 0% |
| Tuesday Night | 54°F | Mostly Clear | 5 to 9 mph SW | 0% |
| Wednesday | 76°F | Sunny | 8 to 12 mph SW | 0% |
| Wednesday Night | 60°F | Partly Cloudy | 8 to 16 mph SW | 2% |
| Thursday | 81°F | Sunny | 13 to 16 mph SW | 5% |
| Thursday Night | 63°F | Mostly Clear | 13 mph SSW | 5% |
| Friday | 81°F | Sunny | 13 mph WSW | 7% |
| Friday Night | 61°F | Mostly Clear | 6 to 9 mph E | 8% |
| Saturday | 80°F | Sunny | 6 to 13 mph ESE | 10% |
| Saturday Night | 61°F | Slight Chance Showers And Thunderstorms | 8 to 12 mph E | 18% |
| Sunday | 79°F | Slight Chance Rain Showers then Mostly Sunny | 8 to 12 mph ENE | 17% |
| Sunday Night | 61°F | Partly Cloudy then Chance Showers And Thunderstorms | 10 mph E | 28% |
| Monday | 76°F | Chance Showers And Thunderstorms then Partly Sunny | 9 to 13 mph ENE | 28% |
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 Aug 4, 2026.