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
Jan 1 19° 45° -8° (1974) 70° (1997) 0.02" NA
Jan 2 19° 45° -8° (1974) 70° (1997) 0.02" NA
Jan 3 19° 45° -9° (1950) 68° (1997) 0.02" NA
Jan 4 19° 45° -14° (1959) 65° (2001) 0.02" NA
Jan 5 19° 45° -5° (2004) 69° (1956) 0.02" NA
Jan 6 19° 45° -9° (1971) 70° (1954) 0.02" NA
Jan 7 19° 45° -3° (1970) 69° (2006) 0.02" NA
Jan 8 19° 45° -2° (1970) 69° (1966) 0.02" NA
Jan 9 19° 45° -11° (1962) 72° (1953) 0.02" NA
Jan 10 19° 45° -13° (1962) 66° (1953) 0.02" NA
Jan 11 19° 45° -18° (1963) 69° (1953) 0.02" NA
Jan 12 19° 45° -22° (1963) 70° (1953) 0.02" NA
Jan 13 19° 45° -12° (1997) 69° (1996) 0.02" NA
Jan 14 19° 46° -9° (1972) 67° (2006) 0.02" NA
Jan 15 19° 46° -8° (1972) 64° (1974) 0.02" NA
Jan 16 19° 46° -3° (1957) 71° (1974) 0.02" NA
Jan 17 19° 46° -5° (1984) 67° (1974) 0.03" NA
Jan 18 19° 46° -19° (1984) 65° (1965) 0.03" NA
Jan 19 19° 46° -17° (1963) 69° (1986) 0.03" NA
Jan 20 19° 46° -9° (1984) 73° (2005) 0.03" NA
Jan 21 19° 46° -7° (1959) 65° (1950) 0.03" NA
Jan 22 19° 46° -10° (1962) 66° (1981) 0.03" NA
Jan 23 19° 46° -10° (1963) 71° (1981) 0.03" NA
Jan 24 19° 46° -8° (1949) 70° (1968) 0.03" NA
Jan 25 19° 46° -6° (1949) 66° (1953) 0.02" NA
Jan 26 20° 46° -7° (1996) 72° (1982) 0.02" NA
Jan 27 20° 46° -5° (1961) 68° (1986) 0.02" NA
Jan 28 20° 47° -8° (1951) 67° (1988) 0.02" NA
Jan 29 20° 47° -12° (1951) 66° (1988) 0.02" NA
Jan 30 20° 47° -6° (1951) 71° (1986) 0.02" NA
Jan 31 20° 47° -9° (1985) 69° (1989) 0.02" NA
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