|
National Weather Service - Denver/Boulder, Colorado
Denver Area Normals & Extremes for September
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
|
85 |
99
|
2023 |
68
|
2011 |
|
55 |
44
|
1962 |
57
|
1972 |
|
0.56 |
1904 |
0.0 |
- |
|
2
|
85 |
100
|
2019 |
67
|
2023^ |
|
55 |
40
|
1952 |
52
|
1974 |
|
1.05 |
1938 |
0.0 |
- |
|
3
|
84 |
97
|
2017 |
68
|
2013 |
|
54 |
33
|
1961 |
46
|
1961 |
|
1.00 |
1961 |
4.2 |
1961 |
|
4
|
84 |
97
|
1995^ |
69
|
2013 |
|
54 |
40
|
1968^ |
52
|
1929 |
|
1.94 |
1909 |
T |
1951 |
|
5
|
84 |
101#
|
2020 |
66
|
2019^ |
|
54 |
38
|
1962 |
51
|
1918 |
|
1.02 |
1918 |
0.0 |
- |
|
6
|
83 |
98
|
2022 |
67
|
2022^ |
|
54 |
34
|
1929 |
45
|
1929 |
|
0.37 |
1881 |
0.0 |
- |
|
7
|
83 |
99
|
2022 |
66
|
2022 |
|
53 |
34
|
1929 |
41
|
1929 |
|
1.22 |
1972 |
T |
1929 |
|
8
|
83 |
99
|
2022 |
64
|
1940^ |
|
53 |
31
|
2020^ |
42
|
1929 |
|
0.88 |
1894 |
1.0 |
2020 |
|
9
|
83 |
96
|
2021 |
63
|
1994^ |
|
53 |
31
|
2020^ |
42
|
2020 |
|
1.30 |
1969 |
T |
2020 |
|
10
|
82 |
99
|
2021 |
66
|
2005 |
|
52 |
35
|
2020^ |
42
|
1898 |
|
0.52 |
1924 |
T |
1898 |
|
11
|
82 |
97
|
2021 |
65
|
1939^ |
|
52 |
32
|
1898 |
41
|
1989 |
|
0.75 |
1913 |
T |
2014 |
|
12
|
81 |
94
|
1911 |
64
|
1939^ |
|
52 |
31
|
1902 |
40
|
1989 |
|
1.11 |
2013 |
2.3 |
1989 |
|
13
|
81 |
96
|
2018^ |
64
|
2018 |
|
51 |
33
|
1993 |
49
|
1961 |
|
0.64 |
1993 |
5.4 |
1993 |
|
14
|
81 |
92
|
2018^ |
63
|
1895^ |
|
51 |
29
|
2003 |
43
|
1912 |
|
2.01 |
2013 |
T |
1912 |
|
15
|
80 |
94
|
2018 |
61
|
1992^ |
|
51 |
32
|
1912^ |
47
|
1903 |
|
0.89 |
1958 |
T |
1912 |
|
16
|
80 |
95
|
2000 |
63
|
2000 |
|
50 |
30
|
1965 |
48
|
1971 |
|
0.38 |
1971^ |
2.7 |
1971 |
|
17
|
79 |
95
|
2000 |
64
|
2018 |
|
50 |
30
|
1965 |
35
|
1971 |
|
1.17 |
1971 |
12.0 |
1971 |
|
18
|
79 |
93
|
2021^ |
69
|
1947 |
|
49 |
23
|
1971 |
40
|
1971 |
|
1.22 |
1996 |
0.9 |
1971 |
|
19
|
79 |
96
|
2010 |
62
|
2014 |
|
49 |
20
|
1971 |
46
|
1965 |
|
1.31 |
1955 |
0.2 |
1955 |
|
20
|
78 |
94
|
2010 |
65
|
1941 |
|
49 |
28
|
1983 |
45
|
1965 |
|
0.97 |
1965 |
3.5 |
1965 |
|
21
|
78 |
92
|
2017 |
60
|
1926 |
|
48 |
27
|
1995 |
36
|
1995 |
|
2.70 |
1902 |
4.2 |
1951 |
|
22
|
77 |
89
|
1953 |
62
|
1884 |
|
48 |
27
|
1895 |
45
|
1941 |
|
0.96 |
1895 |
11.4 |
1895 |
|
23
|
77 |
90
|
1905^ |
63
|
1934 |
|
47 |
29
|
1895 |
41
|
2000 |
|
0.83 |
2017 |
T |
1965 |
|
24
|
76 |
91
|
2020 |
59
|
2020 |
|
47 |
29
|
2000^ |
40
|
1913 |
|
0.67 |
1961 |
4.0 |
1913 |
|
25
|
76 |
91
|
1998 |
61
|
2020 |
|
46 |
25
|
1926 |
45
|
1934 |
|
1.13 |
1915 |
3.0 |
1970 |
|
26
|
75 |
93
|
2024 |
60
|
1948 |
|
46 |
28
|
1927 |
34
|
1927 |
|
1.41 |
2012 |
5.9 |
1908 |
|
27
|
75 |
92
|
1953 |
60
|
2024 |
|
45 |
21
|
1908 |
35
|
1936 |
|
0.81 |
1936 |
2.8 |
1935 |
|
28
|
74 |
92
|
2010 |
59
|
1931 |
|
45 |
21
|
1985 |
34
|
1984 |
|
1.77 |
1936 |
15.0 |
1936 |
|
29
|
74 |
92
|
2024^ |
61
|
2024^ |
|
45 |
17*
|
1985 |
29
|
1985 |
|
1.01 |
1959 |
10.1 |
1959 |
|
30
|
73 |
91
|
2023 |
62
|
1891 |
|
44 |
25
|
1985 |
36
|
1959 |
|
0.73 |
1904 |
2.3 |
1959 |
|
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: 101° on 9/5/2020
* - Lowest Temperature of the Month: 17° on 9/29/1985
- The September Mean Temperature is 64.8° (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: 9/9/2022
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