New Rockport Colony, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for New Rockport Colony, a community in Teton County, Montana.
This Afternoon
68°F
Mostly Cloudy
Mostly cloudy, with a high near 68. East wind around 5 mph.
7-day forecast for New Rockport Colony
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 68°F | Mostly Cloudy | 5 mph E | 2% |
| Tonight | 44°F | Partly Cloudy | 1 to 5 mph SSE | 1% |
| Sunday | 74°F | Sunny | 2 to 6 mph S | 0% |
| Sunday Night | 44°F | Mostly Clear | 1 to 6 mph S | 0% |
| Monday | 78°F | Sunny | 1 to 5 mph SSW | 0% |
| Monday Night | 47°F | Mostly Clear | 5 mph WSW | 0% |
| Tuesday | 77°F | Sunny | 3 mph WSW | 0% |
| Tuesday Night | 47°F | Mostly Clear | 1 to 5 mph E | 1% |
| Wednesday | 79°F | Sunny | 1 to 7 mph SW | 1% |
| Wednesday Night | 48°F | Partly Cloudy | 5 mph SW | 2% |
| Thursday | 78°F | Mostly Sunny | 3 to 7 mph SSW | 1% |
| Thursday Night | 48°F | Slight Chance Light Rain then Partly Cloudy | 3 to 7 mph SW | 15% |
| Friday | 74°F | Mostly Sunny | 3 to 9 mph SW | 7% |
| Friday Night | 45°F | Chance Light Rain | 8 mph WNW | 28% |
Forecast source: National Weather Service (api.weather.gov) for New Rockport Colony (47.860, -112.035). Updated through the day.
Growing snapshot for New Rockport Colony
Last spring frost
May 13
First fall frost
Sep 27
Growing season
135 days
Hardiness zone
4b
More local growing data for New Rockport Colony: nearby ZIP 59436 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Fairfield, Mt (6.2 mi from New Rockport Colony). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.