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Weather in Basin, MT · National Weather Service + NOAA

Basin stays cool in summer

Basin has cold winters and pleasant summers, with very little rain. A typical July afternoon reaches 77°, a January night drops to 14°. Normal November highs come to 38°, and lows to 20°.

Winter 32°/13°Spring 49°/27°Summer 73°/43°Fall 51°/28°
Right now
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Sunrise 9:15 am · sunset 7:10 pm

Getting the latest forecast from the National Weather Service…

What stands out about Basin’s weather

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

Climate →
Cool summersJuly afternoons average 77°, cooler than 97% of U.S. towns.A dry climateJust 16 inches of rain and melted snow a year, less than 93% of U.S. towns.
A normal year

Where today sits in Basin’s year

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

Full climate →
Winter
32° / 13°
Snow is rare
Spring
49° / 27°
Last frost around Jun 7
Summer
73° / 43°
12 days reach 90° in a normal year
Fall now
51° / 28°
First frost around Sep 8
Pastthe usual first frost (Sep 8). Last frost next spring: Jun 7
Best months to be outside
JunJulAug
Highs of 62–84° and lows of 40° or more
When is it wettest?June, with 2.7 inches.Is it warmer than it used to be?+1.5° 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 Basin.

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 Basin itself (about a 3-mile square). Snow, frost dates and day counts: the NOAA station at Boulder, 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.