Boulder Record High by Day of the Year
Data for the record high temperature for each day of the year in
Boulder, Colorado , as well as the year that the record was set. It is based on NOAA data for the years 1893–2024.
Change city
Day
Record High
Year Set or Tied
January 1 70
1997
January 2 70
1997
January 3 68
1997
January 4 67
1927
January 5 71
1984
January 6 70
1954
January 7 69
2006
January 8 70
1909
January 9 72
1953
January 10 66
1928, 1953, 1995
January 11 69
1953
January 12 70
1953
January 13 69
1996
January 14 67
2006
January 15 69
1901
January 16 71
1974
January 17 67
1974
January 18 65
1965, 2009
January 19 69
1986, 2009, 2018
January 20 73
2005
January 21 70
2009
January 22 67
1943
January 23 71
1981
January 24 70
1968
January 25 70
1935
January 26 72
1982
January 27 72
2015
January 28 68
2011
January 29 70
1931
January 30 71
1986
January 31 70
1906
February 1 71
1934
February 2 75
2020
February 3 74
1954
February 4 73
1935
February 5 75
1963
February 6 70
2015
February 7 74
1987
February 8 79
1954
February 9 78
1954
February 10 76
2017
February 11 75
1962
February 12 74
1979
February 13 74
1979
February 14 70
1981
February 15 67
1982, 2017
February 16 73
2017
February 17 68
1970
February 18 73
2016
February 19 71
1981
February 20 74
1981
February 21 77
1982
February 22 73
1982
February 23 74
2002
February 24 72
1981
February 25 75
1986
February 26 72
1932
February 27 75
1932
February 28 74
1932, 2006
March 1 73
2008
March 2 75
1901
March 3 73
1921
March 4 74
2009
March 5 73
1925
March 6 73
1972
March 7 70
1901, 1972
March 8 74
1986
March 9 77
1989
March 10 79
1900, 1989
March 11 78
1900
March 12 74
1900
March 13 75
1910, 1989, 2007
March 14 76
1935
March 15 78
2015, 2017
March 16 80
2015
March 17 90
1910
March 18 80
2017
March 19 78
2017
March 20 80
1997
March 21 83
1910
March 22 80
1910
March 23 76
1967, 2012
March 24 76
1956, 1998
March 25 78
1985
March 26 79
1971
March 27 78
1986
March 28 78
1963, 1986
March 29 79
1943
March 30 79
1986, 2010
March 31 81
2012
April 1 81
2012
April 2 82
2011
April 3 78
2021
April 4 80
2021
April 5 80
1991
April 6 80
1930, 1959, 1991
April 7 86
1988
April 8 83
1930
April 9 78
1930, 1977, 2019, 2022
April 10 80
1907, 1960
April 11 84
2023
April 12 82
2023
April 13 83
2006
April 14 80
1908, 1942, 1963, 1982, 2024
April 15 85
1985
April 16 81
1958
April 17 83
1987
April 18 84
1987
April 19 82
1962, 2022
April 20 83
1989
April 21 88
1989
April 22 85
2022
April 23 87
1994
April 24 87
2012
April 25 84
1938
April 26 85
1946
April 27 85
1910
April 28 82
1910, 1943
April 29 84
1948
April 30 87
1992
May 1 86
1943
May 2 86
1981
May 3 86
1947
May 4 88
2000, 2012
May 5 89
2000
May 6 87
1963, 2004
May 7 87
1963
May 8 86
1895, 2011
May 9 88
1916
May 10 88
1916
May 11 88
1916, 1961, 1962, 1963
May 12 88
1962, 1984
May 13 89
1988
May 14 88
1996
May 15 93
1978
May 16 93
1996
May 17 92
1964
May 18 90
1996
May 19 90
2006
May 20 93
1954
May 21 90
2006
May 22 89
2012
May 23 90
1967, 1989, 2000
May 24 90
1967
May 25 87
1967, 1969, 2013
May 26 91
1969
May 27 92
2006
May 28 95
2000
May 29 95
2000, 2003
May 30 91
1984, 1994
May 31 89
2002
June 1 89
1997, 2020
June 2 92
2006
June 3 95
1958
June 4 94
1990
June 5 95
1946
June 6 95
2000
June 7 95
2000, 2004
June 8 98
1985
June 9 95
2012
June 10 97
1952
June 11 99
2022
June 12 100
1952
June 13 98
1952
June 14 100
2006
June 15 100
1952
June 16 99
2021
June 17 99
2021
June 18 98
1936, 2012
June 19 97
1934, 2016
June 20 97
2017
June 21 99
2016
June 22 98
1954, 2012
June 23 104
1954
June 24 101
2012
June 25 101
2012
June 26 101
1994
June 27 100
1990
June 28 98
2018
June 29 99
1917, 1953
June 30 99
1994
July 1 101
2002
July 2 99
1990
July 3 98
1953, 1964
July 4 98
1989, 2011
July 5 99
1989
July 6 100
1973
July 7 100
1951, 1989
July 8 100
1989
July 9 99
1954, 1976, 2022
July 10 100
1954
July 11 104
1954
July 12 103
1954
July 13 102
1954
July 14 97
1934, 2002
July 15 100
1925
July 16 100
2003, 2006
July 17 98
2002, 2010
July 18 100
1998, 2020
July 19 100
1934, 2017, 2022
July 20 100
1998
July 21 101
2005
July 22 102
1931
July 23 99
2005
July 24 101
1953, 2003
July 25 98
1931, 1953, 1963, 1978, 2023
July 26 98
1935
July 27 101
1947
July 28 100
1947
July 29 100
1947, 1980
July 30 98
2001, 2006
July 31 100
2002
August 1 100
1938
August 2 99
2008
August 3 98
1917, 1954
August 4 99
1947
August 5 98
1962, 1979
August 6 101
1979
August 7 99
1958, 1975, 1995
August 8 101
1969
August 9 101
1947
August 10 97
1969
August 11 97
1959
August 12 99
1996
August 13 97
2007
August 14 99
1935
August 15 97
1988
August 16 100
2002
August 17 97
1948
August 18 98
2002
August 19 96
2013, 2019, 2023
August 20 98
2019
August 21 98
2023
August 22 97
1949
August 23 98
2011
August 24 102
1936
August 25 97
2019, 2020
August 26 96
1953
August 27 96
1926
August 28 96
1948
August 29 97
1954
August 30 96
1948, 2005, 2015
August 31 96
1954, 1960, 1985, 2011
September 1 98
2019
September 2 100
1983, 2019
September 3 97
2017
September 4 96
1948, 1960
September 5 99
2020
September 6 99
2020
September 7 95
2022
September 8 97
2022
September 9 95
2021
September 10 99
2021
September 11 95
2021
September 12 93
1956
September 13 95
1990
September 14 94
1948
September 15 93
2018
September 16 93
2000
September 17 93
2000
September 18 93
1947
September 19 93
2010
September 20 93
1956
September 21 89
2007, 2017
September 22 90
1953, 1954
September 23 91
1947
September 24 92
1949
September 25 88
1949, 1953
September 26 90
2021
September 27 92
1953
September 28 90
2010
September 29 89
1921, 1957, 1964
September 30 91
1980
October 1 90
1953
October 2 89
2005
October 3 88
1967
October 4 88
1922
October 5 90
1947
October 6 86
2020
October 7 88
1956
October 8 86
1979
October 9 86
1910, 1929, 1965
October 10 88
1910
October 11 87
1996
October 12 89
1950
October 13 86
1948
October 14 85
1950, 1962
October 15 85
1958
October 16 87
1991
October 17 85
2003, 2023
October 18 86
1926
October 19 87
2003
October 20 87
1950, 2023
October 21 84
1950
October 22 85
2003
October 23 86
2003
October 24 83
2014
October 25 85
2017
October 26 81
1966
October 27 82
2016
October 28 80
1933, 2016
October 29 83
1950, 1968
October 30 80
1933
October 31 83
1950
November 1 75
1988, 2008
November 2 79
1931
November 3 77
1915, 2015, 2020
November 4 79
1952, 2020
November 5 78
1952, 2023
November 6 77
1980
November 7 78
1980, 2021
November 8 78
1978
November 9 79
2019
November 10 75
1927, 1956, 2005
November 11 73
1902, 1928
November 12 76
1900
November 13 74
1999
November 14 77
1990
November 15 79
2016
November 16 80
2016
November 17 75
1981
November 18 78
2008
November 19 76
2007
November 20 72
2003
November 21 73
2012
November 22 73
2006
November 23 72
1901, 2017
November 24 72
2017
November 25 77
1990
November 26 73
2017
November 27 76
2017
November 28 70
2014
November 29 76
1899
November 30 68
1920, 1956, 1995
December 1 72
2021
December 2 72
2021
December 3 70
1926, 1941, 1980
December 4 75
1965
December 5 71
2012
December 6 69
1981
December 7 68
1984
December 8 71
1940
December 9 74
1957
December 10 70
1915
December 11 71
1934
December 12 68
2017
December 13 74
1921
December 14 69
1924
December 15 70
2006
December 16 69
1941
December 17 76
1980
December 18 69
1979
December 19 69
1979
December 20 70
1954
December 21 66
1982
December 22 71
1933
December 23 71
1955
December 24 70
1955
December 25 68
2005
December 26 70
1947
December 27 74
1980
December 28 67
1980
December 29 69
1965
December 30 71
1980
December 31 66
1904
Years with the Most Daily Records
Which years set the greatest number of daily high temperature records in Boulder history?
Rank
Year
Records Set
1
1954
17
2
2017
16
3
2012
13
4
2006
13
5
1953
13
6
2021
11
7
1989
10
8
1947
10
9
2020
9
10
2000
9
Daily Records by Decade
This table shows the number of daily high temperature records in Boulder that were set in each decade since 1893.
Decade
Records Set
1890s
2
1900s
14
1910s
15
1920s
16
1930s
27
1940s
30
1950s
59
1960s
36
1970s
20
1980s
56
1990s
32
2000s
60
2010s
66
2020s
37
Weather Station Details
Years
Station
Coordinates
1893–2024
Boulder
location