Saint Mary, Montana
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 27° -52° (1916) 66° (1935) 1.1" NA
February 13° 33° -46° (1899) 68° (1934) 0.8" NA
March 19° 38° -38° (1951) 72° (1939) 0.9" NA
April 28° 49° -15° (1935) 91° (1910) 1.2" NA
May 36° 58° 1° (1954) 93° (1895) 2.2" NA
June 43° 68° 0° (1955) 98° (1910) 2.5" NA
July 47° 76° 24° (1919) 99° (1910) 1.5" NA
August 46° 75° 19° (1937) 98° (1897) 1.5" NA
September 39° 65° 0° (1926) 94° (1934) 1.3" NA
October 32° 54° -17° (1919) 83° (1957) 0.9" NA
November 20° 37° -39° (1896) 72° (1962) 0.9" NA
December 12° 29° -47° (1924) 69° (1939) 0.9" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Sep 1 42° 70° 21° (1937) 90° (1967) 0.1" NA
Sep 2 42° 69° 24° (1902) 90° (1967) 0.1" NA
Sep 3 42° 69° 17° (1962) 92° (1950) 0.1" NA
Sep 4 41° 68° 20° (1937) 92° (1950) 0.1" NA
Sep 5 41° 68° 23° (1937) 91° (1967) 0.1" NA
Sep 6 41° 68° 22° (1929) 91° (1967) 0.1" NA
Sep 7 41° 67° 21° (1937) 94° (1934) 0.1" NA
Sep 8 40° 67° 21° (1962) 85° (1963) 0.1" NA
Sep 9 40° 67° 23° (1928) 82° (1935) 0.1" NA
Sep 10 40° 66° 20° (1895) 83° (1966) 0.1" NA
Sep 11 40° 66° 24° (1896) 89° (1897) 0.1" NA
Sep 12 39° 65° 20° (1949) 87° (1899) 0.1" NA
Sep 13 39° 65° 21° (1970) 81° (1948) 0.1" NA
Sep 14 39° 65° 15° (1970) 82° (1948) 0" NA
Sep 15 39° 64° 21° (1903) 85° (1979) 0" NA
Sep 16 38° 64° 21° (1973) 86° (1917) 0" NA
Sep 17 38° 64° 23° (1961) 90° (1898) 0" NA
Sep 18 38° 63° 21° (1945) 85° (1938) 0" NA
Sep 19 38° 63° 17° (1957) 84° (1898) 0" NA
Sep 20 38° 63° 19° (1925) 90° (1898) 0" NA
Sep 21 37° 63° 21° (1895) 84° (1938) 0" NA
Sep 22 37° 62° 19° (1934) 84° (1938) 0" NA
Sep 23 37° 62° 12° (1934) 83° (1949) 0" NA
Sep 24 37° 62° 0° (1926) 82° (1922) 0" NA
Sep 25 37° 61° 16° (1955) 83° (1914) 0" NA
Sep 26 36° 61° 15° (1900) 84° (1962) 0" NA
Sep 27 36° 61° 11° (1972) 83° (1967) 0" NA
Sep 28 36° 60° 17° (1965) 83° (1967) 0" NA
Sep 29 36° 60° 9° (1919) 86° (1963) 0" NA
Sep 30 36° 60° 17° (1894) 82° (1896) 0" NA
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