Roscoe, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Roscoe, a community in Carbon County, Montana.
Overnight
44°F
Patchy Smoke
Patchy smoke. Mostly clear, with a low around 44. Southwest wind around 3 mph.
7-day forecast for Roscoe
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 44°F | Patchy Smoke | 3 mph SW | 0% |
| Tuesday | 72°F | Patchy Smoke | 2 to 9 mph ESE | 9% |
| Tuesday Night | 51°F | Patchy Smoke | 5 to 8 mph S | 8% |
| Wednesday | 83°F | Sunny | 6 mph NNE | 0% |
| Wednesday Night | 56°F | Mostly Clear | 7 mph WSW | 0% |
| Thursday | 90°F | Sunny | 2 to 6 mph NNW | 0% |
| Thursday Night | 61°F | Mostly Clear | 8 mph WSW | 0% |
| Friday | 94°F | Sunny | 2 to 6 mph N | 0% |
| Friday Night | 63°F | Partly Cloudy | 9 mph W | 0% |
| Saturday | 93°F | Sunny | 2 to 9 mph NE | 0% |
| Saturday Night | 64°F | Partly Cloudy | 5 to 8 mph WSW | 1% |
| Sunday | 90°F | Sunny | 5 to 8 mph NNE | 7% |
| Sunday Night | 63°F | Partly Cloudy | 5 to 8 mph SW | 11% |
| Monday | 87°F | Sunny | 5 to 8 mph NNW | 9% |
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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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 Aug 4, 2026.