Sun River, Montana
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 15° 39° -46° (1996) 65° (2005) 0.37" 4.9"
February 16° 41° -45° (1996) 73° (1992) 0.4" 3.1"
March 22° 49° -33° (1960) 79° (2007) 0.7" 5.1"
April 30° 58° -16° (1975) 88° (1980) 1.41" 2.8"
May 38° 66° 8° (1954) 93° (1988) 2.14" 0.8"
June 46° 74° 26° (1969) 99° (1990) 2.41" 0"
July 50° 84° 33° (1971) 111° (2006) 1.32" 0"
August 48° 82° 28° (1992) 102° (1983) 1.42" 0.1"
September 40° 71° 16° (1984) 97° (1967) 1.22" 0.1"
October 32° 60° -19° (1991) 91° (1992) 0.74" 1.6"
November 23° 46° -40° (1959) 74° (2004) 0.47" 3.8"
December 14° 37° -51° (1968) 65° (1957) 0.37" 5"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 34° 63° 8° (2009) 85° (2000) 0.05" 0"
May 2 34° 63° 8° (1954) 84° (1985) 0.05" 0.1"
May 3 34° 63° 14° (1967) 87° (1966) 0.06" 0"
May 4 34° 63° 17° (1967) 87° (1966) 0.04" 0.1"
May 5 35° 64° 18° (1967) 86° (1992) 0.05" 0"
May 6 35° 64° 18° (1996) 89° (1966) 0.05" 0.1"
May 7 35° 64° 21° (1955) 87° (1992) 0.06" 0"
May 8 35° 65° 20° (1969) 87° (1987) 0.05" 0.1"
May 9 36° 65° 21° (1990) 86° (1987) 0.06" 0"
May 10 36° 65° 22° (1979) 83° (1987) 0.05" 0"
May 11 36° 65° 16° (1968) 86° (1960) 0.06" 0.1"
May 12 37° 66° 20° (1966) 89° (2001) 0.06" 0"
May 13 37° 66° 24° (1953) 85° (2001) 0.06" 0"
May 14 37° 66° 25° (1959) 84° (1987) 0.06" 0.1"
May 15 37° 66° 29° (1976) 87° (1973) 0.07" 0"
May 16 38° 67° 27° (1953) 93° (1988) 0.07" 0"
May 17 38° 67° 26° (2002) 90° (2006) 0.07" 0"
May 18 38° 67° 23° (1965) 92° (2006) 0.08" 0.1"
May 19 39° 67° 25° (1968) 91° (1954) 0.07" 0"
May 20 39° 68° 25° (1968) 89° (1958) 0.08" 0"
May 21 39° 68° 24° (2009) 89° (1980) 0.08" 0"
May 22 40° 68° 27° (1963) 86° (1988) 0.08" 0.1"
May 23 40° 68° 26° (1959) 90° (1988) 0.09" 0"
May 24 40° 68° 31° (1957) 89° (2001) 0.08" 0"
May 25 40° 69° 30° (1992) 87° (1999) 0.08" 0"
May 26 41° 69° 26° (1964) 91° (1966) 0.07" 0"
May 27 41° 69° 27° (1995) 90° (1966) 0.09" 0"
May 28 41° 69° 32° (1982) 91° (1958) 0.09" 0"
May 29 42° 69° 31° (1960) 89° (1986) 0.09" 0"
May 30 42° 70° 29° (2005) 90° (1986) 0.1" 0"
May 31 42° 70° 28° (2005) 89° (1972) 0.09" 0"
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