National Weather Service United States Department of Commerce

Widespread Showers in the Mid-Atlantic

Widespread showers and some thunderstorms from Ian may produce isolated flash flooding in the central Appalachians into the Mid-Atlantic and southern New England through the weekend. Hazardous conditions persist along portions of the East coast. Showers, thunderstorms, and high elevation snow are possible across the Central/Southern Rockies and into the Great Basin. Read More >

National Weather Service - Denver/Boulder, Colorado

Denver Area Normals & Extremes for December

January | February | March | April | May | June | July | August | September | October | November | December

Date Normal High Record High Year Set Record Warmest Minimum Year Set   Normal Low Record Low Year Set Record Coldest Maximum Year Set   Maximum Precipitation Year Set Maximum Snowfall Year Set

1

47

73

2021^

43

1972   21

-6

1985

7

1985   0.54 1913 9.8 1929

2

46

74

1885

43

2021   20

-4

1929^

9

1919   0.52 1921 6.5 1933

3

46

69

2010^

49

1941   20

-3

1873

12

1873   0.47 1973 5.9 1909

4

46

72

2007

45

1946   20

-13

2013

7

1909   2.12 1913 20.9 1913

5

45

79#

1939

42

1946   20

-15

2013^

6

1972   1.32 1913 16.5 1913

6

45

73

1939

44

1939^   19

-17

1972

3

1972   1.66 1883 6.0 1892

7

45

70

1906

39

1893^   19

-13

2005

3

2005   0.35 1988 5.4 1971

8

45

73

1940

41

1874   19

-14

1919

4

1932^   0.48 1923 8.0 1923

9

44

71

1957

42

1996   19

-20

1919^

-5

1932   0.31 1897 5.5 1985

10

44

70

1939

46

1933   19

-18

1972

-1

1932   0.44 1989 6.8 1989

11

44

74

1939

44

1933   18

-13

1932

-6

1932   0.38 1878 4.0 1949

12

44

69

2017^

47

1921   18

-12

1961

16

1961^   0.44 1901 5.2 1901

13

44

72

1921

47

1921   18

-12

1961

6

1940   0.39 1937 4.7 1951

14

44

70

2010

41

1946^   18

-18

2008

-1

1926   0.34 1891 7.0 1925

15

43

68

1921

44

1924   18

-19

2008

2

2008   0.32 2015 7.7 2015

16

43

70

1980

49

1939   18

-8

2008^

9

1897   0.45 2016 4.8 1909

17

43

73

1980

43

1939   18

-15

2016

3

2016   0.42 1934 3.9 1930

18

43

68

2013

40

2013   18

-12

1909

5

1924   0.60 1973 9.2 1973

19

43

67

1917

43

1917   18

-10

1989

7

1998   0.75 1913 7.4 1913

20

43

69

1894

43

1933   18

-16

1990^

-3

1990   0.73 2006 17.4 2006

21

43

67

1933

43

1933   18

-21

1990^

-8

1983   0.39 1910 7.7 1910

22

43

70

1955

41

2005^   18

-25*

1990

-5

1983   0.87 1941 8.0 1941

23

43

73

1901

50

1955^   18

-17

1990

-5

1983   1.23 1973 10.3 1973

24

43

70

1955

44

1922   18

-25*

1876

-4

1983   2.00 1982 23.6 1982

25

43

69

2005

45

1899   18

-15

1876

10

1876   0.61 1922 7.4 2007

26

43

68

1980

39

1890   18

-5

1982^

6

1916   0.58 1877 5.2 1904

27

44

75

1980

41

1980   18

-10

1904

9

1894   0.54 1987 9.6 1987

28

44

64

1947

39

1936   18

-12

1983

5

1880   0.29 1932 3.9 2006

29

44

68

1919

44

1919   18

-15

1983

2

1990   0.47 1885 5.4 2014

30

44

71

1980

37

1919   18

-19

2014

1

2014  

0.53

1875

6.0

1947

31

44

66

2005

45

1881   18

-19

1900

-3

1927   0.43 1885 4.5 1886
 

 

The Normal High and Low Temperatures are calculated from 1991-2020 data.

The Temperature Extremes range from 1872-Present

^ - Also in Previous Years

# - Highest Temperatures of the Month:  79° on 12/5/1939

* - Lowest Temperature of the Month:  -25° on 12/22/1990

- The December Mean Temperature is 31.2° (from 1991-2020 data)

- Data collected at the Downtown City Office from 1872 thru December 1948, then at the Stapleton Airport Office from

January 1950 thru February 1995, then at Denver International Airport from March 1995 to Present.

 

Updated: 6/24/2021