Rockvale, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Rockvale, a community in Carbon County, Montana.
Overnight
28°F
Patchy Fog
Patchy fog after 5am. Mostly clear. Low around 28, with temperatures rising to around 30 overnight. Southwest wind around 7 mph.
7-day forecast for Rockvale
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 28°F | Patchy Fog | 7 mph SW | 0% |
| Wednesday | 53°F | Patchy Fog then Sunny | 5 mph NW | 0% |
| Wednesday Night | 29°F | Partly Cloudy | 2 to 12 mph WNW | 0% |
| Thursday | 57°F | Mostly Sunny then Slight Chance Rain Showers | 3 to 12 mph SW | 15% |
| Thursday Night | 32°F | Slight Chance Rain Showers | 5 mph W | 16% |
| Friday | 55°F | Sunny | 5 to 13 mph SW | 1% |
| Friday Night | 34°F | Partly Cloudy | 10 to 17 mph SSW | 0% |
| Saturday | 59°F | Sunny | 9 to 14 mph SSW | 0% |
| Saturday Night | 37°F | Mostly Clear | 9 to 22 mph SSW | 0% |
| Sunday | 64°F | Mostly Sunny | 14 to 22 mph SSW | 0% |
| Sunday Night | 36°F | Partly Cloudy | 5 to 14 mph SW | 0% |
| Monday | 59°F | Mostly Sunny | 5 mph W | 1% |
| Monday Night | 34°F | Mostly Cloudy | 5 to 8 mph S | 1% |
| Tuesday | 61°F | Mostly Sunny | 8 mph SSW | 0% |
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
Belfry
Boyd
Bridger
Edgar
Fox
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 Nov 4, 2026.