Rimrock Colony, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Rimrock Colony, a community in Toole County, Montana.
Tonight
48°F
Mostly Cloudy
Mostly cloudy, with a low around 48. North northeast wind 3 to 7 mph.
7-day forecast for Rimrock Colony
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 48°F | Mostly Cloudy | 3 to 7 mph NNE | 0% |
| Saturday | 66°F | Mostly Sunny | 5 to 12 mph ENE | 0% |
| Saturday Night | 46°F | Partly Cloudy | 13 mph SSE | 0% |
| Sunday | 69°F | Sunny | 14 mph S | 0% |
| Sunday Night | 47°F | Mostly Clear | 14 mph SSE | 0% |
| Monday | 74°F | Sunny | 12 mph S | 0% |
| Monday Night | 49°F | Mostly Clear | 10 mph SW | 0% |
| Tuesday | 69°F | Mostly Sunny | 9 mph WNW | 0% |
| Tuesday Night | 49°F | Partly Cloudy | 5 to 9 mph S | 0% |
| Wednesday | 70°F | Sunny | 9 to 13 mph SW | 0% |
| Wednesday Night | 48°F | Partly Cloudy | 10 mph SW | 3% |
| Thursday | 69°F | Mostly Sunny | 9 mph SSW | 3% |
| Thursday Night | 49°F | Partly Cloudy | 10 mph S | 1% |
| Friday | 69°F | Mostly Sunny | 10 mph SSW | 4% |
Forecast source: National Weather Service (api.weather.gov) for Rimrock Colony (48.895, -112.095). Updated through the day.
Growing snapshot for Rimrock Colony
Last spring frost
May 17
First fall frost
Sep 25
Growing season
129 days
Hardiness zone
4a
More local growing data for Rimrock Colony: nearby ZIP 59454 weather · frost dates · planting calendar · Montana frost dates
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Climate data from the nearest NOAA station, Sunburst 8 E, Mt (14.3 mi from Rimrock Colony). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.