St. Lawrence, SD Weather & Growing Conditions
Today
66°F
Patchy Fog then Cloudy
Patchy fog before 11am. Cloudy, with a high near 66. North northeast wind around 13 mph, with gusts as high as 22 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 66°F | Patchy Fog then Cloudy | 13 mph NNE | 4% |
| Tonight | 52°F | Cloudy then Slight Chance Rain Showers | 7 to 13 mph NNE | 20% |
| Sunday | 65°F | Chance Rain Showers | 10 to 14 mph NE | 33% |
| Sunday Night | 50°F | Rain Showers Likely | 8 to 13 mph ENE | 58% |
| Monday | 64°F | Rain Showers Likely | 10 mph E | 58% |
| Monday Night | 45°F | Mostly Cloudy | 9 mph SE | 9% |
| Tuesday | 67°F | Partly Sunny | 7 to 16 mph SE | 6% |
| Tuesday Night | 48°F | Mostly Cloudy | 13 to 17 mph SE | 8% |
| Wednesday | 70°F | Partly Sunny then Slight Chance Rain Showers | 20 mph SSE | 16% |
| Wednesday Night | 52°F | Chance Rain Showers | 17 mph SE | 42% |
| Thursday | 73°F | Chance Rain Showers | 15 mph SSE | 42% |
| Thursday Night | 54°F | Slight Chance Rain Showers | 13 mph SE | 17% |
| Friday | 75°F | Slight Chance Rain Showers then Partly Sunny | 13 to 17 mph SE | 16% |
| Friday Night | 55°F | Mostly Cloudy then Slight Chance Rain Showers | 15 to 18 mph SSE | 21% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for St. Lawrence, SD
Last spring frost
May 3
First fall frost
Oct 3
Growing season
152 days
Hardiness zone
4b
Explore more for St. Lawrence, SD: full frost dates · planting calendar · South Dakota frost dates
Climate data from the nearest NOAA station, Miller, Sd (5.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.