Roscoe, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Roscoe, a community in Carbon County, Montana.
Tonight
50°F
Showers And Thunderstorms
Showers and thunderstorms. Cloudy. Low around 50, with temperatures rising to around 56 overnight. West northwest wind around 3 mph. Chance of precipitation is 90%.
7-day forecast for Roscoe
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 50°F | Showers And Thunderstorms | 3 mph WNW | 94% |
| Saturday | 56°F | Showers And Thunderstorms | 3 to 9 mph NNW | 95% |
| Saturday Night | 48°F | Showers And Thunderstorms | 3 to 8 mph NW | 88% |
| Sunday | 60°F | Rain Showers Likely | 6 mph NW | 63% |
| Sunday Night | 45°F | Slight Chance Rain Showers then Mostly Cloudy | 5 mph SW | 15% |
| Monday | 69°F | Sunny | 2 to 6 mph S | 5% |
| Monday Night | 49°F | Mostly Clear | 7 mph SSW | 0% |
| Tuesday | 73°F | Mostly Sunny | 5 mph E | 3% |
| Tuesday Night | 52°F | Partly Cloudy | 3 to 7 mph SSW | 6% |
| Wednesday | 74°F | Sunny | 5 mph NE | 10% |
| Wednesday Night | 52°F | Mostly Clear | 3 to 7 mph SSW | 2% |
| Thursday | 76°F | Sunny | 6 mph SSE | 3% |
| Thursday Night | 53°F | Partly Cloudy | 5 to 8 mph S | 2% |
| Friday | 77°F | Mostly Sunny | 6 mph SSW | 3% |
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
Nearby towns & communities
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Joliet
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Montaqua
Red Lodge
Roberts
Rockvale
Silesia
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 Sep 19, 2026.