Rockport Colony, MT Weather & Growing Conditions
Overnight
41°F
Mostly Clear
Mostly clear, with a low around 41. West southwest wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 41°F | Mostly Clear | 3 mph WSW | 0% |
| Tuesday | 73°F | Mostly Sunny | 3 to 7 mph SSE | 1% |
| Tuesday Night | 49°F | Mostly Clear | 3 to 8 mph SW | 1% |
| Wednesday | 80°F | Sunny | 9 mph WNW | 0% |
| Wednesday Night | 52°F | Mostly Clear | 7 mph W | 0% |
| Thursday | 86°F | Sunny | 7 to 10 mph WNW | 0% |
| Thursday Night | 54°F | Mostly Clear | 5 to 12 mph W | 0% |
| Friday | 91°F | Sunny | 3 to 17 mph WNW | 0% |
| Friday Night | 56°F | Clear | 10 to 16 mph W | 0% |
| Saturday | 87°F | Sunny | 7 to 13 mph W | 0% |
| Saturday Night | 56°F | Mostly Clear | 7 to 13 mph WNW | 0% |
| Sunday | 82°F | Mostly Sunny | 9 mph N | 1% |
| Sunday Night | 53°F | Partly Cloudy | 6 to 10 mph NNW | 6% |
| Monday | 79°F | Sunny | 8 mph N | 10% |
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 Aug 4, 2026.