Newport Colony, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Newport Colony, a community in Marshall County, South Dakota.
Overnight
37°F
Light Rain Likely
Rain likely. Cloudy. Low around 37, with temperatures rising to around 41 overnight. North northwest wind around 16 mph, with gusts as high as 35 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Newport Colony
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 37°F | Light Rain Likely | 16 mph NNW | 67% |
| Wednesday | 44°F | Light Rain Likely | 17 mph NNW | 69% |
| Wednesday Night | 31°F | Mostly Cloudy | 14 mph NNW | 1% |
| Thursday | 39°F | Mostly Cloudy | 7 to 14 mph N | 0% |
| Thursday Night | 24°F | Mostly Cloudy | 0 to 6 mph NE | 0% |
| Friday | 41°F | Mostly Sunny | 1 to 6 mph S | 0% |
| Friday Night | 27°F | Partly Cloudy | 7 mph SSW | 0% |
| Saturday | 53°F | Mostly Sunny | 7 to 12 mph SW | 1% |
| Saturday Night | 31°F | Mostly Clear | 7 mph WSW | 0% |
| Sunday | 53°F | Sunny | 5 to 9 mph SSW | 0% |
| Sunday Night | 35°F | Partly Cloudy | 8 mph SSW | 0% |
| Monday | 58°F | Mostly Sunny | 7 to 10 mph W | 0% |
| Monday Night | 32°F | Mostly Clear | 2 to 6 mph WNW | 0% |
| Tuesday | 54°F | Mostly Sunny | 2 to 6 mph WSW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Newport Colony (45.679, -97.933). Updated through the day.
Growing snapshot for Newport Colony
Last spring frost
May 13
First fall frost
Sep 26
Growing season
135 days
Hardiness zone
4a
More local growing data for Newport Colony: nearby ZIP 57421 weather · frost dates · planting calendar · South Dakota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Britton, Sd (8 mi from Newport Colony). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.