Basin, Montana
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 12° 35° -38° (1957) 58° (2005) 0.31" NA
February 15° 39° -39° (1989) 65° (1995) 0.27" NA
March 21° 47° -28° (1955) 72° (1986) 0.47" NA
April 27° 55° -6° (1997) 83° (1987) 0.75" NA
May 35° 64° 9° (1967) 89° (1986) 1.99" NA
June 43° 73° 22° (1954) 96° (1988) 2.16" NA
July 48° 82° 30° (1949) 101° (2002) 1.65" NA
August 46° 82° 19° (1992) 100° (1961) 1.33" NA
September 37° 71° 8° (1965) 94° (1950) 0.99" NA
October 28° 58° -14° (1991) 87° (1992) 0.64" NA
November 19° 42° -34° (1959) 71° (1999) 0.49" NA
December 10° 33° -42° (1990) 62° (1980) 0.33" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 31° 60° 13° (1954) 78° (1985) 0.04" NA
May 2 31° 60° 9° (1967) 79° (1985) 0.04" NA
May 3 31° 60° 19° (1965) 81° (1966) 0.04" NA
May 4 32° 61° 18° (1996) 83° (1966) 0.05" NA
May 5 32° 61° 18° (1996) 84° (1966) 0.04" NA
May 6 32° 61° 19° (1996) 84° (1966) 0.04" NA
May 7 33° 61° 21° (1966) 84° (1987) 0.05" NA
May 8 33° 62° 21° (2010) 83° (1987) 0.05" NA
May 9 33° 62° 20° (1990) 82° (1987) 0.05" NA
May 10 34° 62° 21° (1972) 80° (1949) 0.05" NA
May 11 34° 63° 22° (1973) 84° (1960) 0.06" NA
May 12 34° 63° 20° (1985) 84° (1960) 0.05" NA
May 13 34° 63° 19° (1983) 82° (1960) 0.06" NA
May 14 35° 63° 19° (2004) 81° (1976) 0.06" NA
May 15 35° 64° 22° (2004) 82° (1987) 0.06" NA
May 16 35° 64° 23° (1974) 86° (1988) 0.07" NA
May 17 36° 64° 25° (1986) 85° (1988) 0.07" NA
May 18 36° 65° 21° (1965) 86° (1954) 0.07" NA
May 19 36° 65° 21° (1997) 89° (1954) 0.06" NA
May 20 37° 65° 21° (2003) 85° (1954) 0.07" NA
May 21 37° 65° 23° (1989) 84° (1958) 0.08" NA
May 22 37° 66° 23° (2009) 89° (1950) 0.07" NA
May 23 37° 66° 22° (1966) 84° (1988) 0.08" NA
May 24 38° 66° 24° (1989) 84° (1988) 0.08" NA
May 25 38° 66° 22° (1950) 85° (2003) 0.08" NA
May 26 38° 67° 23° (1975) 85° (1966) 0.08" NA
May 27 38° 67° 24° (1973) 88° (1986) 0.09" NA
May 28 39° 67° 22° (1955) 89° (1986) 0.08" NA
May 29 39° 67° 20° (1954) 87° (1986) 0.09" NA
May 30 39° 68° 26° (1977) 89° (1984) 0.09" NA
May 31 39° 68° 25° (1982) 89° (1986) 0.09" NA
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