Bloomfield, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bloomfield, a community in Dawson County, Montana.
This Afternoon
50°F
Sunny
Sunny. High near 50, with temperatures falling to around 44 in the afternoon. West wind 1 to 5 mph.
7-day forecast for Bloomfield
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 50°F | Sunny | 1 to 5 mph W | 0% |
| Tonight | 28°F | Mostly Clear | 1 mph WSW | 0% |
| Wednesday | 53°F | Mostly Sunny | 1 to 7 mph WNW | 0% |
| Wednesday Night | 28°F | Partly Cloudy | 1 to 5 mph W | 0% |
| Thursday | 52°F | Mostly Sunny | 1 to 8 mph S | 0% |
| Thursday Night | 32°F | Partly Cloudy | 6 mph WSW | 0% |
| Friday | 54°F | Sunny | 6 to 12 mph WSW | 1% |
| Friday Night | 35°F | Partly Cloudy | 6 to 13 mph WSW | 4% |
| Saturday | 55°F | Sunny | 8 to 18 mph W | 4% |
| Saturday Night | 32°F | Mostly Clear | 5 to 8 mph SW | 0% |
| Sunday | 61°F | Mostly Sunny | 5 to 12 mph SW | 0% |
| Sunday Night | 39°F | Partly Cloudy | 9 to 13 mph W | 0% |
| Monday | 55°F | Mostly Sunny | 5 to 12 mph WNW | 0% |
| Monday Night | 34°F | Partly Cloudy | 5 mph WSW | 2% |
Forecast source: National Weather Service (api.weather.gov) for Bloomfield (47.412, -104.919). Updated through the day.
Growing snapshot for Bloomfield
Last spring frost
May 12
First fall frost
Sep 25
Growing season
135 days
Hardiness zone
4a
More local growing data for Bloomfield: nearby ZIP 59315 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Savage, Mt (24.8 mi from Bloomfield). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.