Deerfield Colony, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Deerfield Colony, a community in Fergus County, Montana.
Overnight
51°F
Chance Light Rain
A chance of rain. Mostly cloudy, with a low around 51. Northeast wind around 2 mph. Chance of precipitation is 30%.
7-day forecast for Deerfield Colony
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 51°F | Chance Light Rain | 2 mph NE | 32% |
| Saturday | 65°F | Chance Light Rain | 2 to 8 mph NE | 38% |
| Saturday Night | 46°F | Chance Light Rain | 1 to 7 mph SE | 51% |
| Sunday | 68°F | Chance Light Rain then Partly Sunny | 5 mph ESE | 26% |
| Sunday Night | 45°F | Mostly Clear | 8 mph SE | 0% |
| Monday | 77°F | Sunny | 6 mph S | 0% |
| Monday Night | 47°F | Mostly Clear | 5 to 9 mph S | 0% |
| Tuesday | 80°F | Sunny | 5 mph W | 0% |
| Tuesday Night | 48°F | Mostly Clear | 6 mph SE | 2% |
| Wednesday | 81°F | Sunny | 2 to 6 mph SSW | 1% |
| Wednesday Night | 50°F | Mostly Clear | 3 to 8 mph S | 5% |
| Thursday | 82°F | Sunny | 7 mph S | 4% |
| Thursday Night | 50°F | Mostly Clear | 10 mph SSE | 4% |
| Friday | 80°F | Mostly Sunny | 7 to 10 mph S | 3% |
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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Winifred
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 Sep 19, 2026.