Bloomfield, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bloomfield, a community in Dawson County, Montana.
This Afternoon
79°F
Sunny
Sunny, with a high near 79. North northeast wind around 5 mph.
7-day forecast for Bloomfield
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 79°F | Sunny | 5 mph NNE | 1% |
| Tonight | 56°F | Chance Showers And Thunderstorms | 6 to 9 mph NE | 43% |
| Saturday | 64°F | Rain Showers Likely | 8 to 14 mph ENE | 73% |
| Saturday Night | 51°F | Rain Showers | 14 mph E | 82% |
| Sunday | 61°F | Rain Showers | 14 mph E | 79% |
| Sunday Night | 48°F | Mostly Cloudy | 7 to 13 mph ESE | 13% |
| Monday | 69°F | Partly Sunny | 7 to 14 mph SE | 4% |
| Monday Night | 50°F | Partly Cloudy | 10 to 15 mph SE | 1% |
| Tuesday | 77°F | Sunny | 10 to 14 mph SSE | 0% |
| Tuesday Night | 53°F | Mostly Clear | 5 to 10 mph SSE | 2% |
| Wednesday | 79°F | Sunny | 5 to 8 mph SSE | 11% |
| Wednesday Night | 54°F | Mostly Clear | 5 mph S | 9% |
| Thursday | 80°F | Sunny | 3 to 8 mph SSE | 2% |
| Thursday Night | 55°F | Mostly Clear | 8 mph SE | 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 Sep 19, 2026.