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Mammoth, MT Climate

1991 to 2020 normals at Twin Bridges, 17 mi from the center of Mammoth, elevation 4625 ft.

Average weather by month

Select a month for daily normals and last year's weather

MonthRangeHighLowPrecip.Snow
January35°13°0.22 in--
February40°15°0.22 in--
March49°22°0.37 in--
April57°28°0.85 in--
May66°36°1.70 in--
June75°43°2.17 in--
July85°46°0.89 in--
August83°43°0.75 in--
September74°37°0.88 in--
October59°28°0.73 in--
November44°19°0.33 in--
December35°12°0.33 in--
Year58°9.44 in--

Frequently asked questions

What is the hottest month in Mammoth, MT?
July is the warmest month, with a normal high of 85°F at Twin Bridges.
What is the coldest month in Mammoth, MT?
December is the coldest month, with a normal low of 12°F.
What is the wettest month in Mammoth, MT?
June has the most precipitation on average, about 2.17 inches.