Deerfield Colony, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Deerfield Colony, a community in Fergus County, Montana.
Today
56°F
Sunny
Sunny. High near 56, with temperatures falling to around 47 in the afternoon. South southeast wind 3 to 7 mph.
7-day forecast for Deerfield Colony
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 56°F | Sunny | 3 to 7 mph SSE | 0% |
| Tonight | 28°F | Partly Cloudy | 1 to 6 mph S | 0% |
| Wednesday | 48°F | Mostly Sunny | 2 mph NW | 0% |
| Wednesday Night | 28°F | Partly Cloudy | 0 to 6 mph S | 0% |
| Thursday | 56°F | Mostly Sunny | 1 to 6 mph SW | 1% |
| Thursday Night | 31°F | Partly Cloudy | 1 to 7 mph WSW | 1% |
| Friday | 56°F | Sunny | 7 to 13 mph SW | 1% |
| Friday Night | 36°F | Partly Cloudy | 8 to 16 mph WSW | 7% |
| Saturday | 54°F | Mostly Sunny | 3 to 17 mph W | 1% |
| Saturday Night | 34°F | Partly Cloudy | 3 to 10 mph SSW | 0% |
| Sunday | 65°F | Mostly Sunny | 8 to 12 mph SW | 1% |
| Sunday Night | 36°F | Mostly Cloudy | 5 to 8 mph WSW | 1% |
| Monday | 57°F | Partly Sunny | 5 mph WSW | 1% |
| Monday Night | 36°F | Mostly Cloudy | 7 mph S | 2% |
Forecast source: National Weather Service (api.weather.gov) for Deerfield Colony (47.257, -109.677). Updated through the day.
Growing snapshot for Deerfield Colony
Last spring frost
Jun 1
First fall frost
Sep 11
Growing season
101 days
Hardiness zone
4b
More local growing data for Deerfield Colony: nearby ZIP 59430 weather · frost dates · planting calendar · Montana frost dates
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Climate data from the nearest NOAA station, Denton, Mt (10.7 mi from Deerfield Colony). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.