Great Falls/Malmstrom AFB, Montana
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 11° 32° -44° (1909) 67° (1992) 0.68" 9.6"
February 15° 38° -49° (1936) 84° (1892) 0.51" 7.6"
March 21° 45° -32° (1932) 80° (1892) 1.01" 11.5"
April 30° 56° -10° (1936) 89° (1980) 1.4" 8"
May 38° 65° 15° (1954) 100° (1919) 2.53" 2.3"
June 46° 74° 31° (1999) 102° (1919) 2.24" 0"
July 50° 82° 35° (1915) 107° (1933) 1.45" 0"
August 50° 81° 30° (1992) 106° (1969) 1.65" 0.3"
September 41° 70° 10° (1926) 100° (1893) 1.23" 1.4"
October 33° 58° -11° (1991) 91° (1992) 0.93" 4.4"
November 23° 42° -25° (1985) 83° (1892) 0.59" 7.4"
December 14° 34° -43° (1968) 69° (1939) 0.67" 8.4"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Dec 1 18° 37° -29° (1985) 60° (1969) 0.02" NA
Dec 2 17° 37° -28° (1985) 60° (1959) 0.02" NA
Dec 3 17° 36° -19° (1972) 61° (1987) 0.02" NA
Dec 4 17° 36° -22° (1972) 62° (1987) 0.02" NA
Dec 5 17° 36° -22° (1980) 69° (1939) 0.02" NA
Dec 6 16° 36° -25° (1972) 61° (1987) 0.02" NA
Dec 7 16° 36° -30° (1972) 60° (1900) 0.02" NA
Dec 8 16° 35° -36° (1972) 60° (1939) 0.02" NA
Dec 9 16° 35° -38° (1919) 62° (1979) 0.02" NA
Dec 10 16° 35° -22° (2000) 67° (1939) 0.02" NA
Dec 11 15° 35° -26° (1932) 61° (1891) 0.02" NA
Dec 12 15° 35° -32° (1922) 60° (1921) 0.02" NA
Dec 13 15° 35° -29° (1922) 63° (1891) 0.02" NA
Dec 14 15° 34° -25° (1922) 62° (1891) 0.02" NA
Dec 15 14° 34° -28° (1964) 61° (1980) 0.02" NA
Dec 16 14° 34° -36° (1964) 63° (1980) 0.02" NA
Dec 17 14° 34° -27° (1983) 61° (1891) 0.02" NA
Dec 18 14° 34° -27° (1924) 59° (1891) 0.02" NA
Dec 19 14° 34° -25° (1990) 59° (2004) 0.02" NA
Dec 20 13° 33° -28° (1990) 57° (1900) 0.02" NA
Dec 21 13° 33° -35° (1990) 65° (1933) 0.02" NA
Dec 22 13° 33° -27° (1892) 57° (1933) 0.02" NA
Dec 23 13° 33° -30° (1983) 56° (1960) 0.02" NA
Dec 24 13° 33° -42° (1983) 58° (1950) 0.02" NA
Dec 25 13° 33° -29° (1983) 59° (2005) 0.02" NA
Dec 26 12° 33° -27° (1996) 60° (1980) 0.02" NA
Dec 27 12° 33° -37° (1916) 63° (1980) 0.03" NA
Dec 28 12° 32° -35° (1968) 58° (1999) 0.03" NA
Dec 29 12° 32° -43° (1968) 60° (1956) 0.03" NA
Dec 30 12° 32° -30° (1968) 63° (1917) 0.03" NA
Dec 31 12° 32° -33° (1927) 59° (1963) 0.03" NA
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