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
49°F
Partly Cloudy
Partly cloudy, with a low around 49. West northwest wind around 5 mph.
7-day forecast for Newport Colony
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 49°F | Partly Cloudy | 5 mph WNW | 0% |
| Tuesday | 74°F | Sunny | 5 to 12 mph WNW | 0% |
| Tuesday Night | 52°F | Mostly Clear | 5 to 8 mph SSW | 0% |
| Wednesday | 80°F | Sunny | 6 to 10 mph SW | 0% |
| Wednesday Night | 59°F | Partly Cloudy | 7 to 14 mph SSW | 1% |
| Thursday | 84°F | Sunny | 10 to 15 mph SSW | 4% |
| Thursday Night | 62°F | Mostly Clear | 10 mph S | 4% |
| Friday | 85°F | Sunny | 12 mph SW | 4% |
| Friday Night | 61°F | Mostly Clear | 6 to 9 mph E | 4% |
| Saturday | 84°F | Mostly Sunny | 6 to 13 mph E | 6% |
| Saturday Night | 61°F | Slight Chance Showers And Thunderstorms | 12 mph ENE | 15% |
| Sunday | 82°F | Mostly Sunny | 8 to 12 mph NE | 10% |
| Sunday Night | 61°F | Chance Showers And Thunderstorms | 10 mph ENE | 26% |
| Monday | 80°F | Chance Showers And Thunderstorms then Partly Sunny | 9 to 14 mph ENE | 26% |
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 Aug 4, 2026.