St. Lawrence, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. Lawrence, a town in Hand County, South Dakota.
Tonight
35°F
Chance Light Rain
A chance of rain. Cloudy. Low around 35, with temperatures rising to around 38 overnight. Northwest wind 14 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.
7-day forecast for St. Lawrence
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 35°F | Chance Light Rain | 14 to 17 mph NW | 31% |
| Wednesday | 46°F | Chance Light Rain | 18 mph NW | 51% |
| Wednesday Night | 31°F | Mostly Cloudy | 12 to 15 mph NNW | 13% |
| Thursday | 46°F | Mostly Sunny | 8 to 13 mph N | 1% |
| Thursday Night | 25°F | Partly Cloudy | 2 to 7 mph E | 0% |
| Friday | 46°F | Partly Sunny | 2 to 6 mph S | 0% |
| Friday Night | 28°F | Partly Cloudy | 7 mph SSW | 0% |
| Saturday | 58°F | Mostly Sunny | 7 to 14 mph W | 4% |
| Saturday Night | 32°F | Mostly Clear | 10 mph W | 1% |
| Sunday | 59°F | Sunny | 10 mph SSW | 0% |
| Sunday Night | 37°F | Mostly Clear | 9 to 13 mph SSW | 0% |
| Monday | 60°F | Sunny | 10 to 16 mph WNW | 0% |
| Monday Night | 34°F | Mostly Clear | 8 mph W | 0% |
| Tuesday | 57°F | Mostly Sunny | 6 to 9 mph SSW | 0% |
Forecast source: National Weather Service (api.weather.gov) for St. Lawrence (44.517, -98.938). Updated through the day.
Growing snapshot for St. Lawrence
Last spring frost
May 3
First fall frost
Oct 3
Growing season
152 days
Hardiness zone
4b
More local growing data for St. Lawrence: nearby ZIP 57373 weather · frost dates · planting calendar · South Dakota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Miller, Sd (5.2 mi from St. Lawrence). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.