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
57°F
Areas Of Fog
Areas of fog. Cloudy, with a low around 57. North wind 6 to 10 mph.
7-day forecast for St. Lawrence
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 57°F | Areas Of Fog | 6 to 10 mph N | 10% |
| Saturday | 66°F | Areas Of Fog | 13 mph NNE | 7% |
| Saturday Night | 53°F | Mostly Cloudy then Chance Rain Showers | 8 to 13 mph NE | 25% |
| Sunday | 64°F | Chance Rain Showers | 14 mph NE | 46% |
| Sunday Night | 51°F | Rain Showers | 8 to 13 mph ENE | 81% |
| Monday | 63°F | Rain Showers | 10 mph E | 81% |
| Monday Night | 48°F | Mostly Cloudy | 9 mph ESE | 11% |
| Tuesday | 66°F | Partly Sunny | 7 to 16 mph SE | 7% |
| Tuesday Night | 51°F | Mostly Cloudy then Slight Chance Rain Showers | 13 to 16 mph SE | 15% |
| Wednesday | 71°F | Chance Rain Showers | 18 mph SSE | 29% |
| Wednesday Night | 54°F | Chance Rain Showers | 13 to 16 mph SSE | 33% |
| Thursday | 72°F | Chance Rain Showers then Partly Sunny | 12 mph SSE | 33% |
| Thursday Night | 55°F | Partly Cloudy | 10 mph SE | 14% |
| Friday | 73°F | Partly Sunny | 12 to 16 mph SE | 14% |
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 Sep 19, 2026.