Roscoe, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Roscoe, a community in Carbon County, Montana.
This Afternoon
52°F
Sunny
Sunny. High near 52, with temperatures falling to around 45 in the afternoon. Southeast wind around 3 mph.
7-day forecast for Roscoe
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 52°F | Sunny | 3 mph SE | 0% |
| Tonight | 33°F | Mostly Clear | 5 mph WSW | 0% |
| Wednesday | 53°F | Mostly Sunny | 5 mph N | 0% |
| Wednesday Night | 31°F | Partly Cloudy | 2 to 7 mph SSW | 0% |
| Thursday | 56°F | Mostly Sunny | 2 to 8 mph WSW | 5% |
| Thursday Night | 34°F | Partly Cloudy | 2 to 8 mph WSW | 7% |
| Friday | 55°F | Sunny | 2 to 9 mph SW | 8% |
| Friday Night | 36°F | Partly Cloudy | 6 to 12 mph SW | 8% |
| Saturday | 59°F | Sunny | 3 to 9 mph S | 0% |
| Saturday Night | 39°F | Partly Cloudy | 5 to 10 mph SSW | 0% |
| Sunday | 65°F | Mostly Sunny | 6 to 12 mph SW | 0% |
| Sunday Night | 41°F | Partly Cloudy | 5 to 12 mph SW | 0% |
| Monday | 59°F | Mostly Sunny | 5 mph SE | 1% |
| Monday Night | 40°F | Partly Cloudy | 3 to 7 mph SSW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Roscoe (45.352, -109.493). Updated through the day.
Growing snapshot for Roscoe
Last spring frost
Jun 5
First fall frost
Sep 14
Growing season
99 days
Hardiness zone
5a
More local growing data for Roscoe: nearby ZIP 59071 weather · frost dates · planting calendar · Montana frost dates
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Climate data from the nearest NOAA station, Mystic Lake, Mt (4.9 mi from Roscoe). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.