Rockvale, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Rockvale, a community in Carbon County, Montana.
Today
59°F
Showers And Thunderstorms
Showers and thunderstorms. Cloudy. High near 59, with temperatures falling to around 57 in the afternoon. North northwest wind 12 to 15 mph. Chance of precipitation is 100%.
7-day forecast for Rockvale
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 59°F | Showers And Thunderstorms | 12 to 15 mph NNW | 96% |
| Tonight | 45°F | Patchy Fog | 9 to 15 mph NW | 92% |
| Sunday | 63°F | Rain Showers | 7 mph NW | 80% |
| Sunday Night | 44°F | Slight Chance Rain Showers then Mostly Cloudy | 5 mph ESE | 15% |
| Monday | 72°F | Sunny | 2 to 9 mph S | 0% |
| Monday Night | 46°F | Mostly Clear | 6 mph S | 0% |
| Tuesday | 77°F | Sunny | 6 mph SSW | 0% |
| Tuesday Night | 48°F | Partly Cloudy | 5 mph SSE | 1% |
| Wednesday | 79°F | Mostly Sunny | 6 mph SSW | 5% |
| Wednesday Night | 49°F | Partly Cloudy | 3 to 10 mph S | 3% |
| Thursday | 81°F | Sunny | 12 mph SSW | 0% |
| Thursday Night | 49°F | Mostly Clear | 6 to 10 mph SSE | 1% |
| Friday | 80°F | Mostly Sunny | 10 to 14 mph S | 2% |
| Friday Night | 48°F | Partly Cloudy | 7 to 12 mph S | 11% |
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 Sep 19, 2026.