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.
Overnight
28°F
Mostly Cloudy
Mostly cloudy, with a low around 28. West wind around 1 mph.
7-day forecast for New Rockport Colony
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 28°F | Mostly Cloudy | 1 mph W | 0% |
| Wednesday | 50°F | Mostly Sunny | 1 mph N | 0% |
| Wednesday Night | 29°F | Mostly Clear | 2 to 6 mph SSW | 0% |
| Thursday | 54°F | Mostly Sunny | 6 to 12 mph SW | 0% |
| Thursday Night | 32°F | Partly Cloudy | 9 mph SW | 0% |
| Friday | 54°F | Mostly Sunny | 7 to 14 mph SSW | 0% |
| Friday Night | 37°F | Mostly Cloudy | 6 to 14 mph SW | 2% |
| Saturday | 60°F | Mostly Sunny | 5 to 8 mph SSW | 2% |
| Saturday Night | 39°F | Mostly Cloudy | 5 to 10 mph SSW | 0% |
| Sunday | 62°F | Partly Sunny | 8 to 17 mph WSW | 0% |
| Sunday Night | 36°F | Mostly Cloudy | 5 to 8 mph WSW | 1% |
| Monday | 54°F | Mostly Sunny | 5 mph SSW | 1% |
| Monday Night | 36°F | Mostly Cloudy | 6 mph SSW | 0% |
| Tuesday | 58°F | Mostly Sunny | 6 to 13 mph SW | 1% |
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 Nov 4, 2026.