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Denver/Boulder, CO

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Denver's Fall/Winter/Spring Statistics

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Denver's Earliest Freeze Dates since 1872

(Average Date of first Freeze: October 7th)

Rank Date
1 9/8/2020
- 9/8/1962
3 9/11/1898
4 9/12/1902
5 9/14/1876
- 9/14/1912
- 9/14/2003
- 9/14/1993
9 9/15/1889
- 9/15/1903

 

Denver's Latest Early Season Freezes since 1872

Rank Date
1 11/15/1944
2 11/6/1924
3 11/4/1940
4 10/30/1974
5 10/29/1941
- 10/29/1939
- 10/29/1931
8 10/29/1874
9 10/28/2015
10 10/27/2010
- 10/27/1963
-

10/27/1884


Denver's First Freeze Dates last 10 Years

10/25/2024
10/13/2023
10/24/2022
10/13/2021
9/8/2020
10/9/2019
10/10/2018
10/9/2017
10/6/2016
10/28/2015

 

 

Denver's Latest Freeze Dates since 1872

(Average Date of last Freeze: May 5th)

Rank Date
1 6/8/2007
2 6/2/1951
3 6/1/1919
4 5/30/1883
5 5/28/1947
6 5/26/1950
7 5/24/2002
8 5/22/2019
- 5/22/1930
- 5/22/1910

 

Denver's Earliest Late Season Freezes since 1872

 

Rank Date
1 4/5/1981
- 4/5/1977
3 4/7/1936
4 4/9/1926
5 4/13/1962
- 4/13/1881
7 4/14/1980
8 4/15/1949
- 4/15/1897
10 4/16/1974

 

Denver's Late Season Freeze Dates last 10 Years

5/4/2024
4/23/2023
5/21/2022
5/12/2021
5/6/2020
5/22/2019
4/25/2018
5/4/2017
5/8/2016
5/11/2015

 

 

 

Denver's Earliest Snow Dates since 1882 (at least 0.1") 

(Average Date of first measurable Snowfall: October 18th)

Rank Date Snow
1 9/3/1961 4.2
2 9/8/2020 1.0
- 9/8/1962 0.7
4 9/12/1989 2.3
5 9/12/1974 1.8
6 9/13/1993 5.4
7 9/16/1971 2.7
8 9/19/1955 0.2
9 9/20/1995 4.7
- 9/20/1965 3.5

 

Denver's Latest First Snowfall Dates since 1882 (at least 0.1")

Rank Date Snow

1

12/10/2021

0.3

2

11/21/1934

1.0

3

11/19/1931

1.0

4

11/17/2016

1.7

5

11/16/1894

2.6

6

11/15/2010

1.5

-

11/15/1988

2.5

-

11/15/1987

6.1

-

11/15/1902

4.0

10

11/14/2008

0.1

-

11/14/1964

4.2

-

11/14/1944

0.1


Denver's First Snowfall Dates last 10 Years (at least 0.1")

11/5/2024
10/28/2023
11/4/2022
12/10/2021
9/8/2020
10/10/2019
10/6/2018
10/9/2017
11/17/2016
11/5/2015
11/11/2014

 

 

Denver's Latest Snowfall Dates since 1882 (at least 0.1")

(Average Date of last Snowfall: April 28th)

Rank Date Snow
1 6/2/1951 0.3
2 5/29/1975 5.6
3 5/28/1950 0.1
- 5/28/1947 1.0
5 5/24/2002 0.7
6 5/21/2022 0.5
- 5/21/2019 2.8
- 5/21/2001 1.0
- 5/21/1931 3.6
- 5/21/1910 3.8
- 5/21/1891 1.0

 

Date of Last Snowfall Last 10 Years (at least 0.1")

4/20/2024
4/22/2023
5/21/2022
4/21/2021
4/16/2020
5/21/2019
4/24/2018
4/29/2017
4/30/2016
5/10/2015

 

 

Denver's Largest Daily Snowfalls since 1882 (inches)

 

Rank Snow Date
1 23.6 Dec 24,1982
2 23.0 April 23, 1885
3 22.9 Mar 18,2003
4 20.9 Dec 4,1913
5 20.7 Dec 20,2006
6 19.9 March 14, 2021
7 18.0 Mar 5,1983
8 17.3 Apr 2,1957
- 17.3 Mar 21,1944
10 16.5 Dec 5,1913

 

 

Denver's Largest First Snowfalls of the Season since 1882 (inches)

Rank Year Snowfall
1 10/20-10/23 (1906) 22.7
2 11/5-11/9 (2024) 20.0
3 09/26-9/28 (1936) 16.5
4 10/28-10/31 (1929) 16.2
5 10/03-10/5 (1969) 16.0
6 09/16-9/18 (1971) 15.6
7 09/28-9/30 (1959) 12.9
8 9/22/1895 11.4
9 10/29-10/31 (1972) 9.7
10 10/10-10/11 (2005) 9.6
11 09/28-9/29 (1985) 8.7
12 10/25-10/26 (2011) 8.5
13 11/6-11/7 (1918) 8.1
14 10/28-10/29 (2023) 7.5
15 9/20-9/21 (1995) 7.4
16 10/16/1928 7.3
17 10/26-10/27 (1976) 7.2
18 10/13-10/14 (1966) 6.9
19 9/26-9/27 (1908) 6.5
20 10-17-10/18 (1925) 6.5

 

 

 

 

Denver's Largest Snowstorms since 1882 (inches)

 

Rank Snowfall Dates
1 45.7 December 1-5, 1913
2 31.8 March 17-19, 2003
3 30.4 November 2-4, 1946
4 27.1 March 13-14, 2021
5 23.8 December 24, 1982
6 23.0 April 23, 1885
7 22.7 October 20-23, 1906
8 21.9 October 24-25, 1997
9 21.5 November 26-27, 1983
10 20.7 December 20-21, 2006
11 20.0 November 5-9, 2024
12 19.3 January 29-31, 1883
13 19.0 April 24-25, 1935
14 18.7 March 5-6, 1983
15 18.5 Mar 20-22, 1944
16 18.2 April 17-19, 1920
- 18.0 April 19-20, 1907
18 18.0 March 31-April 1, 1891
19 17.7 November 19-21, 1979
20 17.3 April 2, 1957

 

 

Denver's Largest Seasonal Snowfalls since 1882 (inches)

(Average Denver Seasonal Snowfall: 56.9")

Rank Season Snow
1 1908-1909  118.7
2 1958-1959  99.3
3 1913-1914  98.9
4 1972-1973  94.9
5 1946-1947  93.5
6 1973-1974  91.5
7 1943-1944  90.5
8 1906-1907  85.6
9 1979-1980  85.5
10 1923-1924  85.4

 

 

Denver's Lowest Seasonal Snowfalls since 1882 (inches)

(Average Denver Seasonal Snowfall: 56.9")

Rank Season Snow
1 1888-1889  21.3
2 2016-2017 21.8
3 2010-2011  22.8
4 1887-1888  25.5
5 2017-2018 25.7
6 1981-1982  26.7
7 1903-1904  27.2
8 1945-1946  28.6
9 2001-2002  30.2
10 2005-2006  30.4

 

 

Denver's Longest Consecutive Snow Depth Days (1" or more)
(1900-Present)

Rank # of Days End Date
1 63 1/27/1984
2 61 2/19/2007
3 60 1/29/1914
4 48 2/9/1983
5 43 1/30/1974
6 39 12/29/1992
7 38 1/30/1988
8 33 1/18/1919
9 32 1/8/2008
10 27 2/23/1989
11 25 3/4/1942
  25 1/3/1917
13 24 1/14/1942
  24 12/30/1914
  24 3/17/1912
16 23 1/30/1962
17 22 2/24/2012
  22 1/29/1992
  22 1/13/1980
  22 1/27/1940
21 21 12/7/1991
  21 12/16/1908

 

 

Denver's Top Consecutive Snowless Days (< 0.1") since 1882

Rank # of Days Time Period
1 232 4/22/2021 - 12/9/2021
  232 3/5/1887 - 10/22/1887
3 225 3/27/1888 - 11/6/1888
4 220 3/23/1889 - 10/28/1889
5 219 4/5/1886 - 11/9/1886
6 212 3/19/1925 - 10/16/1925
7 211 4/1/1992 - 10/28/1992
  211 4/3/1977 - 10/30/1977
  211 4/13/1940 - 11/9/1940
10 210 4/20/1894 - 11/15/1894

 

Denver's Coldest Temperatures since 1872
 

Rank Temperature Date
1 -29    January 9, 1875  
2 -25 December 22, 1990
- -25 January 12, 1963
- -25 January 11, 1963
- -25 February 1, 1951
- -25 February 8, 1936
- -25 December 24, 1876
8 -24 December 22, 2022
- -24 February 5, 1989
- -24 January 10, 1962
- -24 January 9, 1962
- -24 January 31, 1951
13 -22 February 6, 1899
- -22 February 4, 1883
- -22 January 28, 1872
16 -21 December 21, 1990
- -21 December 21, 1983
- -21 January 6, 1913
- -21 February 12, 1905
20 -20 January 17, 1930
- -20 December 9, 1919
- -20 January 26,1902
- -20 February 12, 1899
- -20 February 11, 1899
- -20 December 9, 1898
- -20 January 15, 1888
- -20 January 19, 1883
- -20 February 15, 1881
- -20 January 13, 1875
- -20 January 25, 1872

 

Denver's Coldest Lowest Maximum Temperatures since 1872

Rank Temperature Date
1 -10 2/3/1883
2 -9 1/19/1883
  -9 1/11/1963
  -9 2/4/1989
5 -8 1/6/1913
  -8 1/7/1937
  -8 12/21/1983
8 -7 2/3/1989
  -7 12/21/1990
10 -6 12/22/2022
  -6 12/11/1932
12 -5 2/11/1899
  -5 12/9/1932
  -5 2/9/1933
  -5 12/22/1983
  -5 12/23/1983
17 -4 1/24/1872
  -4 1/14/1888
  -4 2/7/1933
  -4 1/29/1951
20 -4 12/24/1983

 

Consecutive Hours of 0 degrees or below for Denver
(Hours are estimated for the early 1900's and 1880's as only 3 to 5 observations were taken a day)
 

Rank Number of Hours Dates
1 115 12/21 to 12/25 (1983)
2      92    12/8 to 12/12 (1932)
3         85 1/2 12/19 to 12/23 (1990)
4   69 2/3 to 2/5 (1989)
5            66 (est.) 2/1 to 2/4 (1889)
6   64 1/10 to 1/12 (1963)
             64 (est.) 1/15 to 1/18 (1886)
8            61 (est.) 2/1 to 2/4 (1883)
9   60 12/11 to 12/14 (1997)
             60 (est.) 2/10 to 2/13 (1905)

 

 

Denver's Consecutive Days <= 32 Degrees

Rank Number Ending Date
1 14 11/29/1880
2 12 1/4/1879
- 12 1/6/1878
4 11 02/02/1949
5 10 12/12/1972
- 10 03/02/1960
- 10 01/21/1930
- 10 03/19/1906
- 10 02/07/1905
- 10 2/9/1883
11 9 12/25/1983
- 9 01/26/1940
- 9 04/02/1926
- 9 02/03/1916
- 9 12/24/1909
- 9 2/17/1881
17 8 12/30/2009
- 8 02/08/1989
- 8 02/06/1985
- 8 01/20/1984

 

All Temperature Changes Below are based on Calendar Days (Midnight to Midnight)

Denver's Largest 1 Day (Same Day) Temperature Changes since 1872
(Red denotes Low to High Change)

Rank Date Change High Low
1 01/25/1872 66 46 -20
2 01/21/1888 64 62 -2
3 12/21/2022 61 51 -10
  01/05/2015 61 56 -5
  12/26/1879 61 57 -4
6 02/08/1936 60 35 -25
  12/27/1886 60 63 3
8 03/26/1971 59 84 25
9 1/16/2024 57 38 -19
  11/20/1898 57 66 9
11 02/07/1936 56 39 -17
  01/19/1886 56 42 -14
  01/08/1875 56 39 -17
14 10/09/2019 55 83 28
  12/29/2017 55 64 9
  09/19/2010 55 96 41
  02/16/1996 55 68 13
  11/28/1958 55 50 -5
  01/21/1935 55 46 -9
  01/07/1912 55 49 -6
  01/07/1909 55 64 9
  02/02/1902 55 45 -10
  01/31/1899 55 50 -5
  12/23/1884 55 54 -1
  01/23/1877 55 40 -15
  11/28/1873 55 54 -1

 

Denver's Largest 2 Day Temperature Changes since 1872

(For example, a temperature change from 12/13/2008 to 12/14/2008)
(Red denotes Low to High Change)

Rank Ending Date Change High Low
1 12/14/2008 76 58 -18
2 12/22/2022 75 51 -24
3 02/04/1996 72 56 -16
4 12/23/1989 71 53 -18
5 10/10/2019 70 83 13
  02/06/1933 70 60 -10
  12/10/1919 70 50 -20
8 12/04/2013 69 56 -13
  02/02/1951 69 44 -25
  01/15/1875 69 52 -17
11 01/20/1943 68 65 -3
  11/11/1911 68 66 -2
  12/26/1879 68 57 -11
  01/09/1875 68 39 -29
15 2/22/2023 67 60 -7
  02/22/1914 67 70 3
  11/16/1894 67 72 5
  01/29/1873 67 50 -17
19 1/17/2024 66 47 -19
  02/19/2018 66 69 3
  01/05/2015 66 56 -10
  01/16/1972 66 59 -7
  01/03/1950 66 54 -12
  01/21/1888 66 62 -4

 

Denver's Largest 3 Day Temperature Changes since 1872

(For example, a temperature change from 12/9/1919 to 12/11/1919)
(Red denotes Low to High Change)

Rank Ending Date Change High Low
1 12/11/1919 81 60 -21
2 02/13/1951 80 73 -7
3 02/04/2020 79 74 -5
4 01/11/1963 78 53 -25
5 11/12/2014 77 64 -13
  12/15/2008 77 58 -19
  01/09/1875 77 48 -29
8 02/07/1933 76 60 -16
9 12/4/2013 75 62 -13
  02/02/1989 75 64 -11
  01/28/1951 75 68 -7
  01/20/1943 75 65 -10
13 12/24/2022 74 50 -24
  10/11/2019 74 83 9
  12/4/2008 74 69 -5
  02/13/1981 74 62 -12
  01/05/1913 74 58 -16
  12/26/1879 74 57 -17
19 02/05/1996 73 56 -16
  01/12/1877 73 58 -15

 

 

 

Denver's Coldest Winters
(December through February)

Rank Season Avg. Temp
1 1898-1899 24.6
2 1978-1979 25.6
3 1961-1962 25.7
4 1983-1984 26.2
5 1873-1874 27.0
6 2006-2007 27.2
7 1992-1993 27.4
- 1874-1875 27.4
9 1928-1929 27.5
- 1912-1913 27.5

 

Denver's Warmest Winters
(December through February)

Rank Season Avg. Temp
1 1933-1934 40.1
2 1980-1981 38.2
3 1934-1935 37.8
4 1942-1943 37.4
5 1906-1907 37.3
6 1953-1954 37.1
7 1957-1958 36.6
8 1975-1976 36.4
- 1895-1896 36.4
10 1994-1995 36.1

 

 

Denver's Highest Wind Gusts 

Date Gust Description
6/18/2013 97 mph Tornado hits ASOS
10/20/1978 96 mph High Wind Event
3/13/2019 80 mph Strong Winds with Blizzard
6/6/2020 78 mph Thunderstorm Wind
8/6/1877 75 mph Thunderstorm Wind
7/24/2016 74 mph Thunderstorm Wind
4/17/2018 70 mph High Wind Event
7/25/1965 70 mph Thunderstorm Wind
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