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
May 1 33° 54° 4° (1954) 72° (1957) 0.1" NA
May 2 33° 55° 1° (1954) 75° (1957) 0.1" NA
May 3 33° 55° 14° (1956) 74° (1900) 0.1" NA
May 4 34° 55° 14° (1913) 76° (1897) 0.1" NA
May 5 34° 56° 18° (1967) 80° (1966) 0.1" NA
May 6 34° 56° 15° (1919) 80° (1953) 0.1" NA
May 7 34° 56° 17° (1919) 79° (1953) 0.1" NA
May 8 35° 57° 18° (1929) 78° (1910) 0.1" NA
May 9 35° 57° 20° (1924) 75° (1900) 0.1" NA
May 10 35° 57° 10° (1925) 81° (1897) 0.1" NA
May 11 35° 57° 16° (1968) 80° (1897) 0.1" NA
May 12 36° 58° 15° (1899) 86° (1897) 0.1" NA
May 13 36° 58° 16° (1953) 90° (1897) 0.1" NA
May 14 36° 58° 22° (1916) 89° (1897) 0.1" NA
May 15 36° 59° 17° (1929) 92° (1897) 0.1" NA
May 16 37° 59° 18° (1899) 89° (1897) 0.1" NA
May 17 37° 59° 23° (1942) 90° (1897) 0.1" NA
May 18 37° 60° 18° (1909) 93° (1895) 0.1" NA
May 19 37° 60° 20° (1903) 79° (1956) 0.1" NA
May 20 38° 60° 12° (1903) 80° (1958) 0.1" NA
May 21 38° 60° 22° (1969) 80° (1958) 0.1" NA
May 22 38° 61° 19° (1949) 80° (1919) 0.1" NA
May 23 38° 61° 21° (1949) 81° (1941) 0.1" NA
May 24 39° 61° 25° (1959) 84° (1897) 0.1" NA
May 25 39° 62° 25° (1918) 85° (1934) 0.1" NA
May 26 39° 62° 12° (1918) 92° (1934) 0.1" NA
May 27 39° 62° 19° (1921) 87° (1936) 0.1" NA
May 28 40° 62° 18° (1947) 87° (1934) 0.1" NA
May 29 40° 63° 13° (1895) 84° (1934) 0.1" NA
May 30 40° 63° 24° (1895) 87° (1936) 0.1" NA
May 31 40° 63° 22° (1921) 87° (1894) 0.1" NA
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