Montana Weather Records

7 official all-time records

The official all-time extremes for Montana, as NOAA’s State Climate Extremes Committee lists them: from 117°F at Medicine Lake to -70°F at Rogers Pass.

Maximum Temperature

Record	Date	Where	Station	Status
117°F	July 5, 1937	Medicine Lake	245572	E1
117°F	July 20, 1893	Glendive	243581	E1

Minimum Temperature

Record	Date	Where	Station	Status
-70°F	January 20, 1954	Rogers Pass	247156	E: Value is unchanged from previous extremes tables last updated by NCEI (formerly NCDC) between 1998 and 2006. Value exceeds all other valid values.

Greatest 24-Hour Precipitation

Record	Date	Where	Station	Status
11.5 inches	June 20, 1921	Circle (Springbrook)	247796	E: Value is unchanged from previous extremes tables last updated by NCEI (formerly NCDC) between 1998 and 2006. Value exceeds all other valid values.

Maximum 24-Hour Snowfall

Record	Date	Where	Station	Status
48 inches	December 27, 2003	Millegan 14SE	245712	E1
48 inches	May 29, 1982	Shonkin 7S 14SE	247540	E1

Maximum Snow Depth

Record	Date	Where	Station	Status
147 inches	February 18, 1975	Summit	247978	E: Value is unchanged from previous extremes tables last updated by NCEI (formerly NCDC) between 1998 and 2006. Value exceeds all other valid values.

Every storm in Montana since 1950 Every tornado in Montana Every state

Sources

NOAA National Centers for Environmental Information, State Climate Extremes Committee records.