Britton, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Britton, a city in Marshall County, South Dakota.
Overnight
36°F
Light Rain Likely
Rain likely and patchy fog. Cloudy. Low around 36, with temperatures rising to around 40 overnight. North northwest wind around 16 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Britton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 36°F | Light Rain Likely | 16 mph NNW | 73% |
| Wednesday | 44°F | Light Rain | 15 to 18 mph NNW | 76% |
| Wednesday Night | 30°F | Mostly Cloudy then Patchy Fog | 12 to 15 mph NNW | 2% |
| Thursday | 39°F | Mostly Cloudy | 8 to 15 mph N | 0% |
| Thursday Night | 23°F | Mostly Cloudy | 1 to 7 mph E | 0% |
| Friday | 42°F | Mostly Sunny | 1 to 7 mph S | 0% |
| Friday Night | 26°F | Partly Cloudy | 5 to 8 mph SSW | 0% |
| Saturday | 52°F | Mostly Sunny | 8 to 13 mph SW | 1% |
| Saturday Night | 31°F | Mostly Clear | 5 to 8 mph WSW | 0% |
| Sunday | 54°F | Sunny | 5 to 10 mph SW | 0% |
| Sunday Night | 35°F | Partly Cloudy | 9 mph SW | 0% |
| Monday | 58°F | Mostly Sunny | 8 to 12 mph W | 0% |
| Monday Night | 32°F | Mostly Clear | 3 to 7 mph WNW | 0% |
| Tuesday | 53°F | Mostly Sunny | 3 to 7 mph WSW | 1% |
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.