Unseasonably warm temperatures continue today through the weekend across the Southwest and southern U.S., with more than 100 record or near record maximum temperatures forecast through the rest of the week and over the weekend. Elevated to critical fire weather conditions will persist across the southern Plains today, moving into the central Plains and Southeast U.S on Saturday. Read More >
National Weather Service - Denver, Colorado
Temperture Normals And Extreme For September
|Normal|Record| Year |Record| Year ||Normal|Record| Year |Record| Year |
Date | High | High | Set |Warmest Set || Low | Low | Set |Coldest Set |
| | | |Minimum || | | |Maximum |
-----|------|------|------|------|------||------|------|------|------|------|
1 | 84 | 98 | 2019 | 68 | 2011 || 54 | 44 | 1962 | 57 | 1972 |
2 | 84 | 100 | 2019 | 67 | 1939 || 54 | 40 | 1952 | 52 | 1974 |
3 | 83 | 97 | 2017 | 68 | 2013 || 53 | 33 | 1961 | 46 | 1961 |
4 | 83 | 97 | 1995^| 69 | 2013 || 53 | 40 | 1968^| 52 | 1929 |
5 | 83 | 101#| 2020 | 66 | 2019^|| 53 | 38 | 1962 | 51 | 1918 |
6 | 82 | 97 | 2020^| 67 | 2020 || 52 | 34 | 1929 | 45 | 1929 |
7 | 82 | 95 | 2013^| 63 | 1938^|| 52 | 34 | 1929 | 41 | 1929 |
8 | 82 | 94 | 1959 | 64 | 1940^|| 51 | 31 | 2020^| 42 | 1929 |
9 | 81 | 94 | 1994^| 63 | 1994^|| 51 | 31 | 2020^| 42 | 2020 |
10 | 81 | 93 | 2018^| 66 | 2005 || 51 | 35 | 2020^| 42 | 1898 |
11 | 81 | 93 | 2018 | 65 | 1939^|| 50 | 32 | 1898 | 41 | 1989 |
12 | 80 | 94 | 1911 | 64 | 1939^|| 50 | 31 | 1902 | 40 | 1989 |
13 | 80 | 96 | 2018^| 64 | 2018 || 49 | 33 | 1993 | 49 | 1961 |
14 | 79 | 92 | 2018^| 63 | 1895^|| 49 | 29 | 2003 | 43 | 1912 |
15 | 79 | 94 | 2018 | 61 | 1992^|| 49 | 32 | 1912^| 47 | 1903 |
16 | 79 | 95 | 2000 | 63 | 1926 || 48 | 30 | 1965 | 48 | 1971^|
17 | 78 | 95 | 2000 | 64 | 2018 || 48 | 30 | 1965 | 35 | 1971 |
18 | 78 | 93 | 1895 | 69 | 1947 || 47 | 23 | 1971 | 40 | 1971 |
19 | 77 | 96 | 2010 | 62 | 1947 || 47 | 20 | 1971 | 46 | 1965 |
20 | 77 | 94 | 2010 | 65 | 1941 || 47 | 28 | 1983 | 45 | 1965 |
21 | 76 | 92 | 2017 | 60 | 1926 || 46 | 27 | 1995 | 36 | 1995 |
22 | 76 | 89 | 1953 | 62 | 1884 || 46 | 27 | 1895 | 45 | 1941 |
23 | 75 | 90 | 1905^| 63 | 1934 || 45 | 29 | 1895 | 43 | 1965 |
24 | 75 | 91 | 2020 | 59 | 1949 || 45 | 29 | 2000^| 40 | 1913 |
25 | 75 | 91 | 1998 | 61 | 2020 || 44 | 25 | 1926 | 45 | 1934 |
26 | 74 | 90 | 2010^| 60 | 1948 || 44 | 28 | 1927 | 34 | 1927 |
27 | 74 | 92 | 1953 | 59 | 2001 || 44 | 21 | 1908 | 35 | 1936 |
28 | 73 | 92 | 2010 | 59 | 1931 || 43 | 21 | 1985 | 34 | 1984 |
29 | 73 | 92 | 1892 | 61 | 1981 || 43 | 17* | 1985 | 29 | 1985 |
30 | 72 | 90 | 1980 | 62 | 1891 || 42 | 25 | 1985 | 36 | 1959 |
The Normal High and Low Temperatures are calculated from 1981-2010 data.
The Temperature Extremes range from 1872-2020.
^ - Also in previous years.
# - Highest Temperature of the Month: 101 degrees on 9/5/2020
* - Lowest Temperature of the Month: 17 degrees on 9/29/1985.
- The September Mean Temperature is 62.4 degrees (from 1981-2010 DIA data).
- Data collected at the Downtown City Office from 1872-December 1949, then
at the Stapleton Airport Office from January 1950-February 1995, then at
Denver International Airport from March 1995-Present.
UPDATED: 9/9/2020
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