Duncan Ranch Colony, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Duncan Ranch Colony, a community in Wheatland County, Montana.
Tonight
45°F
Rain Showers Likely
Rain showers likely and patchy fog. Cloudy, with a low around 45. West northwest wind around 7 mph. Chance of precipitation is 60%.
7-day forecast for Duncan Ranch Colony
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 45°F | Rain Showers Likely | 7 mph WNW | 59% |
| Sunday | 66°F | Chance Rain Showers then Partly Sunny | 2 to 8 mph WNW | 29% |
| Sunday Night | 44°F | Mostly Cloudy then Patchy Fog | 5 to 8 mph SSE | 8% |
| Monday | 72°F | Patchy Fog then Mostly Sunny | 5 to 8 mph S | 1% |
| Monday Night | 44°F | Mostly Clear | 5 to 12 mph S | 0% |
| Tuesday | 77°F | Sunny | 3 to 9 mph WSW | 0% |
| Tuesday Night | 48°F | Partly Cloudy | 7 mph SW | 3% |
| Wednesday | 77°F | Mostly Sunny | 5 to 10 mph W | 2% |
| Wednesday Night | 48°F | Mostly Clear | 9 mph WSW | 3% |
| Thursday | 78°F | Sunny | 5 to 10 mph SSW | 1% |
| Thursday Night | 48°F | Mostly Clear | 5 to 10 mph E | 3% |
| Friday | 77°F | Mostly Sunny | 5 to 9 mph SSW | 3% |
| Friday Night | 47°F | Partly Cloudy | 12 mph S | 13% |
| Saturday | 68°F | Chance Rain Showers | 9 to 14 mph SW | 27% |
Forecast source: National Weather Service (api.weather.gov) for Duncan Ranch Colony (46.442, -110.026). Updated through the day.
Growing snapshot for Duncan Ranch Colony
Last spring frost
Jun 3
First fall frost
Sep 8
Growing season
94 days
Hardiness zone
4b
More local growing data for Duncan Ranch Colony: nearby ZIP 59085 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Martinsdale 3 Nnw, Mt (14.2 mi from Duncan Ranch Colony). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.