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Weather in Rimrock Colony, MT · National Weather Service + NOAA

Rimrock Colony stays cool in summer

Rimrock Colony has cold winters and pleasant summers, with very little rain. A typical July afternoon reaches 79°, a January night drops to 11°. A typical November afternoon reaches 40°, and nights fall to 21°.

Winter 33°/12°Spring 52°/29°Summer 76°/48°Fall 54°/31°
Right now
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Sunrise 9:27 am · sunset 6:57 pm

Getting the latest forecast from the National Weather Service…

What stands out about Rimrock Colony’s weather

Read from 30 years of NOAA records. Each one opens the full story on the Climate page.

Climate →
Cool summersJuly afternoons average 79°, cooler than 93% of U.S. towns.A dry climateJust 14 inches of rain and melted snow a year, less than 95% of U.S. towns.
A normal year

Where today sits in Rimrock Colony’s year

Typical highs and lows month by month, from 30 years of NOAA records.

Full climate →
Winter
33° / 12°
Snow is rare
Spring
52° / 29°
Last frost around May 15
Summer
76° / 48°
16 days reach 90° in a normal year
Fall now
54° / 31°
First frost around Sep 25
Pastthe usual first frost (Sep 25). Last frost next spring: May 15
Best months to be outside
JunJulAugSep
Highs of 62–84° and lows of 40° or more
When is it wettest?June, with 3.5 inches.Is it warmer than it used to be?+1.8° vs. the 20th century.What is each month like?Highs, lows, rain and snow for all 12.

Weather talk

Road reports, first frosts and storm memories from neighbors in Rimrock Colony.

Town Square →
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Forecast, conditions and alerts: National Weather Service. Climate: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000. Temperatures and rainfall come from NOAA’s gridded normals for Rimrock Colony itself (about a 3-mile square). Snow, frost dates and day counts: the NOAA station at Sweetgrass, MT (9 mi, frost, heat and degree days). Sunrise and sunset are calculated from the town’s position. Normals are 30-year averages, not a forecast.