Rockport Colony, MT Weather & Growing Conditions
This Afternoon
50°F
Mostly Sunny
Mostly sunny. High near 50, with temperatures falling to around 43 in the afternoon. South southeast wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 50°F | Mostly Sunny | 3 mph SSE | 0% |
| Tonight | 31°F | Mostly Cloudy | 3 mph W | 0% |
| Wednesday | 47°F | Mostly Sunny | 3 mph NNW | 0% |
| Wednesday Night | 30°F | Mostly Clear | 5 mph SW | 0% |
| Thursday | 49°F | Mostly Sunny | 3 to 9 mph WSW | 0% |
| Thursday Night | 32°F | Partly Cloudy | 8 mph WSW | 0% |
| Friday | 48°F | Mostly Sunny | 8 to 13 mph SW | 7% |
| Friday Night | 35°F | Mostly Cloudy | 10 to 20 mph WSW | 7% |
| Saturday | 50°F | Mostly Sunny | 3 to 15 mph WSW | 0% |
| Saturday Night | 36°F | Mostly Cloudy | 3 to 8 mph SW | 1% |
| Sunday | 57°F | Partly Sunny | 8 to 14 mph SW | 5% |
| Sunday Night | 35°F | Mostly Cloudy | 5 to 9 mph WSW | 5% |
| Monday | 50°F | Partly Sunny | 6 mph WSW | 4% |
| Monday Night | 36°F | Mostly Cloudy | 7 mph SSW | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Rockport Colony, MT
Last spring frost
Jun 9
First fall frost
Sep 3
Growing season
86 days
Hardiness zone
4b
Explore more for Rockport Colony, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Blackleaf, Mt (4.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.