Britton, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Britton, a city in Marshall County, South Dakota.
This Afternoon
47°F
Slight Chance Light Rain
A slight chance of rain. Cloudy. High near 47, with temperatures falling to around 44 in the afternoon. North wind around 16 mph, with gusts as high as 31 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Britton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 47°F | Slight Chance Light Rain | 16 mph N | 22% |
| Tonight | 36°F | Light Rain Likely | 15 mph N | 74% |
| Wednesday | 44°F | Light Rain | 15 to 18 mph NNW | 78% |
| Wednesday Night | 29°F | Mostly Cloudy | 14 mph N | 14% |
| Thursday | 40°F | Partly Sunny | 8 to 15 mph N | 3% |
| Thursday Night | 25°F | Mostly Cloudy | 1 to 7 mph E | 0% |
| Friday | 43°F | Partly Sunny | 1 to 6 mph SSW | 0% |
| Friday Night | 27°F | Partly Cloudy | 5 to 8 mph SSW | 0% |
| Saturday | 54°F | Mostly Sunny | 8 to 13 mph WSW | 7% |
| Saturday Night | 30°F | Partly Cloudy | 8 mph W | 2% |
| Sunday | 55°F | Mostly Sunny | 6 to 10 mph SW | 2% |
| Sunday Night | 36°F | Partly Cloudy | 9 mph SSW | 0% |
| Monday | 57°F | Mostly Sunny | 9 to 16 mph W | 0% |
| Monday Night | 32°F | Mostly Clear | 5 to 8 mph W | 0% |
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 Nov 4, 2026.