Lake Poinsett, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lake Poinsett, a community in Hamlin County, South Dakota.
Overnight
38°F
Light Rain Likely
Rain likely and patchy fog. Cloudy. Low around 38, with temperatures rising to around 42 overnight. Northwest wind around 23 mph, with gusts as high as 31 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Lake Poinsett
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 38°F | Light Rain Likely | 23 mph NW | 69% |
| Wednesday | 43°F | Light Rain | 17 to 24 mph NW | 91% |
| Wednesday Night | 34°F | Chance Light Rain then Mostly Cloudy | 14 to 17 mph NNW | 49% |
| Thursday | 42°F | Mostly Cloudy | 12 to 15 mph N | 0% |
| Thursday Night | 28°F | Mostly Cloudy | 1 to 9 mph NE | 0% |
| Friday | 43°F | Mostly Sunny | 1 to 5 mph SE | 0% |
| Friday Night | 28°F | Partly Cloudy | 5 mph S | 0% |
| Saturday | 52°F | Sunny | 5 to 12 mph SW | 0% |
| Saturday Night | 33°F | Mostly Clear | 5 to 8 mph W | 0% |
| Sunday | 54°F | Sunny | 5 to 9 mph WSW | 0% |
| Sunday Night | 37°F | Mostly Clear | 8 mph SSW | 0% |
| Monday | 58°F | Sunny | 7 to 12 mph W | 0% |
| Monday Night | 35°F | Mostly Clear | 3 to 7 mph NW | 0% |
| Tuesday | 55°F | Mostly Sunny | 3 to 7 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov) for Lake Poinsett (44.572, -97.108). Updated through the day.
Growing snapshot for Lake Poinsett
Last spring frost
May 6
First fall frost
Oct 1
Growing season
145 days
Hardiness zone
4b
More local growing data for Lake Poinsett: nearby ZIP 57248 weather · frost dates · planting calendar · South Dakota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Castlewood #2, Sd (12.6 mi from Lake Poinsett). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.