Rockvale, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Rockvale, a community in Carbon County, Montana.
Today
77°F
Sunny then Patchy Smoke
Patchy smoke after 3pm. Sunny, with a high near 77. Northeast wind 2 to 10 mph.
7-day forecast for Rockvale
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 77°F | Sunny then Patchy Smoke | 2 to 10 mph NE | 0% |
| Tonight | 48°F | Patchy Smoke then Mostly Clear | 3 to 10 mph N | 2% |
| Wednesday | 87°F | Sunny | 2 to 6 mph WSW | 0% |
| Wednesday Night | 52°F | Mostly Clear | 7 mph NW | 0% |
| Thursday | 96°F | Sunny | 6 mph WSW | 0% |
| Thursday Night | 57°F | Mostly Clear | 5 to 10 mph NNW | 0% |
| Friday | 100°F | Sunny | 5 mph SW | 0% |
| Friday Night | 60°F | Mostly Clear | 9 mph NW | 0% |
| Saturday | 97°F | Sunny | 5 to 9 mph W | 0% |
| Saturday Night | 60°F | Mostly Clear | 6 to 10 mph NNE | 0% |
| Sunday | 95°F | Sunny | 7 mph N | 2% |
| Sunday Night | 60°F | Partly Cloudy | 10 mph NNE | 6% |
| Monday | 92°F | Mostly Sunny | 5 to 10 mph N | 2% |
| Monday Night | 59°F | Partly Cloudy | 8 to 13 mph NNE | 12% |
Forecast source: National Weather Service (api.weather.gov) for Rockvale (45.519, -108.871). Updated through the day.
Growing snapshot for Rockvale
Last spring frost
May 29
First fall frost
Sep 15
Growing season
107 days
Hardiness zone
5a
More local growing data for Rockvale: nearby ZIP 59026 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Bearcreek
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Bridger
Edgar
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Fromberg
Joliet
Luther
Montaqua
Red Lodge
Roberts
Roscoe
Silesia
Climate data from the nearest NOAA station, Joliet, Mt (11 mi from Rockvale). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.