Britton, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Britton, a city in Marshall County, South Dakota.
Today
67°F
Patchy Fog then Cloudy
Patchy fog before 9am, then patchy fog and a slight chance of drizzle between 9am and 11am. Cloudy, with a high near 67. Northeast wind 6 to 13 mph, with gusts as high as 22 mph.
7-day forecast for Britton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 67°F | Patchy Fog then Cloudy | 6 to 13 mph NE | 3% |
| Tonight | 50°F | Mostly Cloudy | 7 to 10 mph NE | 7% |
| Sunday | 66°F | Mostly Cloudy | 13 mph NE | 5% |
| Sunday Night | 46°F | Mostly Cloudy | 6 to 9 mph E | 3% |
| Monday | 67°F | Partly Sunny | 6 to 9 mph E | 3% |
| Monday Night | 43°F | Partly Cloudy | 7 mph SE | 3% |
| Tuesday | 68°F | Mostly Sunny | 6 to 14 mph SE | 1% |
| Tuesday Night | 46°F | Partly Cloudy | 12 mph SSE | 2% |
| Wednesday | 70°F | Partly Sunny | 13 to 16 mph SSE | 11% |
| Wednesday Night | 51°F | Chance Rain Showers | 12 mph SSE | 25% |
| Thursday | 72°F | Chance Rain Showers then Partly Sunny | 8 to 12 mph SSE | 25% |
| Thursday Night | 53°F | Mostly Cloudy then Slight Chance Rain Showers | 9 mph SSE | 16% |
| Friday | 74°F | Slight Chance Rain Showers then Partly Sunny | 8 to 15 mph SSE | 16% |
| Friday Night | 55°F | Mostly Cloudy then Slight Chance Rain Showers | 13 mph SSE | 19% |
Forecast source: National Weather Service (api.weather.gov) for Britton (45.792, -97.753). Updated through the day.
Growing snapshot for Britton
Last spring frost
May 13
First fall frost
Sep 26
Growing season
135 days
Hardiness zone
4a
More local growing data for Britton: nearby ZIP 57430 weather · frost dates · planting calendar · South Dakota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Britton, Sd (3.5 mi from Britton). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.