Boulder, Colorado
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 19° 46° -22° (1963) 73° (2005) 0.7" 10"
February 23° 49° -24° (1989) 79° (1954) 0.75" 11.1"
March 28° 56° -6° (2002) 80° (1997) 1.78" 17.2"
April 34° 63° -3° (1975) 88° (1989) 2.88" 9.3"
May 42° 72° 22° (1954) 95° (2000) 3.05" 1.4"
June 51° 82° 30° (1951) 104° (1954) 1.99" 0"
July 56° 87° 42° (1972) 104° (1954) 1.88" 0"
August 55° 85° 40° (2004) 101° (1979) 1.63" 0"
September 47° 77° 15° (1985) 100° (1983) 1.79" 1.2"
October 37° 67° 5° (1991) 90° (1953) 1.28" 5"
November 27° 53° -8° (1993) 79° (1952) 1.42" 11.8"
December 21° 46° -24° (1990) 76° (1980) 0.78" 11.9"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Oct 1 42° 73° 23° (1985) 90° (1953) 0.05" NA
Oct 2 42° 72° 27° (1959) 84° (1979) 0.05" NA
Oct 3 41° 72° 31° (1959) 88° (1967) 0.05" NA
Oct 4 41° 72° 30° (1950) 85° (1963) 0.05" NA
Oct 5 41° 71° 27° (1991) 84° (1993) 0.04" NA
Oct 6 40° 71° 28° (1995) 85° (1993) 0.04" NA
Oct 7 40° 71° 23° (1970) 88° (1956) 0.04" NA
Oct 8 40° 70° 22° (1970) 86° (1979) 0.04" NA
Oct 9 40° 70° 24° (1990) 86° (1965) 0.04" NA
Oct 10 39° 70° 25° (1949) 86° (1962) 0.04" NA
Oct 11 39° 69° 20° (1977) 87° (1996) 0.04" NA
Oct 12 39° 69° 20° (1969) 89° (1950) 0.04" NA
Oct 13 38° 68° 10° (1969) 86° (1948) 0.04" NA
Oct 14 38° 68° 13° (1969) 85° (1950) 0.04" NA
Oct 15 38° 67° 20° (1970) 85° (1958) 0.04" NA
Oct 16 37° 67° 20° (1969) 87° (1991) 0.04" NA
Oct 17 37° 67° 15° (1999) 85° (2003) 0.04" NA
Oct 18 36° 66° 22° (1969) 85° (2003) 0.04" NA
Oct 19 36° 66° 18° (1976) 87° (2003) 0.04" NA
Oct 20 36° 65° 25° (1949) 87° (1950) 0.04" NA
Oct 21 35° 65° 24° (1990) 84° (1950) 0.04" NA
Oct 22 35° 64° 22° (1984) 85° (2003) 0.04" NA
Oct 23 35° 64° 26° (1975) 86° (2003) 0.04" NA
Oct 24 34° 63° 19° (1975) 81° (1952) 0.04" NA
Oct 25 34° 63° 20° (1975) 80° (1959) 0.04" NA
Oct 26 34° 62° 13° (1997) 81° (1966) 0.04" NA
Oct 27 33° 62° 23° (1997) 79° (1983) 0.04" NA
Oct 28 33° 61° 19° (1991) 79° (1990) 0.04" NA
Oct 29 33° 61° 7° (1991) 83° (1950) 0.04" NA
Oct 30 32° 60° 6° (1993) 79° (1950) 0.04" NA
Oct 31 32° 59° 5° (1991) 83° (1950) 0.04" NA
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