Boulder, Montana
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 10° 34° -38° (1957) 58° (2005) 0.4" NA
February 14° 40° -39° (1989) 65° (1995) 0.3" NA
March 20° 47° -28° (1955) 72° (1986) 0.52" NA
April 26° 56° -6° (1997) 83° (1987) 0.76" NA
May 34° 65° 9° (1967) 89° (1986) 1.99" NA
June 42° 74° 22° (1954) 96° (1988) 1.94" NA
July 47° 82° 30° (1949) 101° (2002) 1.51" NA
August 46° 82° 19° (1992) 100° (1961) 1.43" NA
September 36° 71° 8° (1965) 94° (1950) 1.06" NA
October 27° 60° -14° (1991) 87° (1992) 0.61" NA
November 18° 42° -34° (1959) 71° (1999) 0.56" NA
December 11° 35° -42° (1990) 62° (1980) 0.43" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Sep 1 41° 77° 25° (2006) 93° (1955) 0.04" NA
Sep 2 41° 77° 26° (1974) 92° (1950) 0.04" NA
Sep 3 41° 76° 27° (1958) 93° (1950) 0.04" NA
Sep 4 40° 76° 25° (1962) 94° (1950) 0.04" NA
Sep 5 40° 75° 24° (1969) 93° (1967) 0.04" NA
Sep 6 39° 75° 27° (1956) 91° (1967) 0.04" NA
Sep 7 39° 75° 18° (1992) 90° (1998) 0.04" NA
Sep 8 39° 74° 20° (1960) 91° (1979) 0.04" NA
Sep 9 38° 74° 19° (1962) 90° (1979) 0.04" NA
Sep 10 38° 73° 25° (1983) 90° (1979) 0.04" NA
Sep 11 38° 73° 16° (1989) 86° (1954) 0.04" NA
Sep 12 37° 72° 18° (1989) 88° (1981) 0.04" NA
Sep 13 37° 72° 21° (1974) 89° (1948) 0.04" NA
Sep 14 37° 72° 16° (1970) 89° (1948) 0.04" NA
Sep 15 36° 71° 17° (1970) 90° (2000) 0.04" NA
Sep 16 36° 71° 20° (1965) 92° (2000) 0.04" NA
Sep 17 36° 71° 8° (1965) 87° (1981) 0.03" NA
Sep 18 36° 70° 10° (1965) 89° (1981) 0.03" NA
Sep 19 35° 70° 18° (1964) 89° (1981) 0.03" NA
Sep 20 35° 70° 15° (1983) 89° (1949) 0.03" NA
Sep 21 35° 69° 16° (1995) 86° (1966) 0.03" NA
Sep 22 34° 69° 16° (1960) 84° (1966) 0.03" NA
Sep 23 34° 69° 17° (1996) 86° (1966) 0.03" NA
Sep 24 34° 68° 16° (2000) 86° (1994) 0.03" NA
Sep 25 33° 68° 17° (1970) 87° (1963) 0.03" NA
Sep 26 33° 68° 19° (1972) 85° (1952) 0.03" NA
Sep 27 33° 67° 16° (1961) 85° (1963) 0.03" NA
Sep 28 33° 67° 17° (1999) 87° (1967) 0.03" NA
Sep 29 32° 67° 11° (1985) 87° (1967) 0.03" NA
Sep 30 32° 66° 14° (1985) 86° (1967) 0.03" NA
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