Shelby, Montana
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 11° 34° -42° (1972) 65° (1981) 0.33" 5.4"
February 13° 37° -45° (1936) 72° (1992) 0.36" 6.2"
March 21° 45° -32° (1951) 79° (2004) 0.68" 6.8"
April 29° 56° -19° (1936) 88° (1987) 1.15" 4.9"
May 39° 65° 9° (1954) 93° (1936) 2.07" 1.4"
June 46° 72° 27° (1935) 101° (1936) 2.36" 0.1"
July 51° 81° 31° (1999) 103° (1936) 1.2" 0"
August 49° 80° 25° (1992) 105° (1961) 1.22" 0.3"
September 40° 69° 0° (1934) 99° (1967) 1.15" 0.5"
October 31° 57° -16° (1991) 91° (1992) 0.59" 2"
November 20° 42° -32° (1985) 82° (1962) 0.45" 5"
December 11° 33° -46° (1983) 72° (1939) 0.37" 5.4"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 34° 61° 12° (1954) 82° (1968) 0.05" 0.1"
May 2 34° 61° 9° (1954) 84° (1985) 0.04" 0.1"
May 3 34° 62° 10° (1967) 83° (1924) 0.05" 0"
May 4 35° 62° 18° (1967) 83° (1966) 0.04" 0.1"
May 5 35° 62° 19° (1967) 84° (1992) 0.05" 0.1"
May 6 35° 63° 19° (1977) 88° (1911) 0.04" 0"
May 7 36° 63° 20° (1929) 89° (1992) 0.05" 0.1"
May 8 36° 63° 22° (1929) 84° (1987) 0.05" 0.1"
May 9 37° 63° 21° (1929) 84° (1987) 0.06" 0.1"
May 10 37° 64° 13° (1946) 86° (1940) 0.05" 0"
May 11 37° 64° 22° (1968) 85° (1958) 0.06" 0.1"
May 12 38° 64° 20° (1943) 89° (1960) 0.06" 0.1"
May 13 38° 64° 22° (2004) 87° (1931) 0.07" 0"
May 14 38° 65° 22° (1929) 92° (1936) 0.06" 0.1"
May 15 39° 65° 24° (1971) 87° (1939) 0.07" 0"
May 16 39° 65° 21° (1992) 90° (1988) 0.06" 0.1"
May 17 39° 65° 25° (2003) 88° (2008) 0.08" 0"
May 18 40° 66° 27° (1965) 88° (2006) 0.07" 0"
May 19 40° 66° 28° (1974) 88° (1964) 0.07" 0.1"
May 20 40° 66° 27° (1979) 88° (1964) 0.07" 0"
May 21 41° 66° 25° (1969) 89° (1980) 0.08" 0"
May 22 41° 67° 26° (1960) 90° (1928) 0.08" 0.1"
May 23 41° 67° 23° (1960) 88° (1928) 0.08" 0"
May 24 42° 67° 28° (1932) 89° (1928) 0.07" 0"
May 25 42° 67° 26° (1978) 92° (1928) 0.08" 0"
May 26 42° 67° 28° (1931) 91° (1936) 0.09" 0"
May 27 42° 68° 29° (1954) 93° (1936) 0.08" 0.1"
May 28 43° 68° 16° (1947) 92° (1934) 0.09" 0"
May 29 43° 68° 28° (1977) 92° (1936) 0.09" 0"
May 30 43° 68° 29° (1924) 92° (1936) 0.09" 0"
May 31 43° 69° 27° (1928) 89° (1972) 0.09" 0"
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