Weather on September 13
Denver, CO
55 Years of Data
Avg High
77°F
Avg Low
48°F
Warmest
1990
78°F avg
Coldest
2014
39°F avg
About This Date
September 13th in Denver, CO typically brings pleasant fall weather, with average highs around 77°F and lows near 48°F — a 29°F daily swing. Over 55 years of records, the warmest September 13th was in 1990 (78°F average), while the coldest was 2014 (39°F) — a 39°F range across recorded history. Precipitation has occurred on 27% of recorded September 13th dates, with snow falling 2% of the time (heaviest snowfall: 1.5"). The last decade has been 1.9°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.9°F warmer on this date compared to 20-30 years ago.
Planning for September 13th in Denver, CO? Great weather for outdoor activities.
Warming Trend
1.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 83° | 52° | 67° | — | — |
| 2024 | 91° | 49° | 70° | — | — |
| 2023 | 79° | 44° | 61° | — | — |
| 2022 | 91° | 48° | 70° | — | — |
| 2021 | 88° | 55° | 71° | — | — |
| 2020 | 80° | 46° | 63° | — | — |
| 2019 | 76° | 46° | 61° | — | — |
| 2018 | 94° | 58° | 76° | — | — |
| 2017 | 93° | 57° | 75° | — | — |
| 2016 | 75° | 48° | 62° | 0.18" | — |
| 2015 | 85° | 52° | 68° | — | — |
| 2014coldest | 46° | 32° | 39° | 0.13" | — |
| 2013 | 63° | 57° | 60° | 2.06" | — |
| 2012 | 57° | 50° | 54° | 1.4" | — |
| 2011 | 86° | 53° | 70° | — | — |
| 2010 | 83° | 51° | 67° | — | — |
| 2009 | 57° | 47° | 52° | 0.48" | — |
| 2008 | 65° | 50° | 57° | 0.74" | — |
| 2007 | 90° | 48° | 69° | — | — |
| 2006 | 80° | 47° | 63° | — | — |
| 2005 | 90° | 51° | 70° | — | — |
| 2004 | 95° | 55° | 75° | — | — |
| 2003 | 84° | 45° | 64° | — | — |
| 2002 | 68° | 49° | 58° | 0.56" | — |
| 2001 | 86° | 53° | 70° | 0.38" | — |
| 2000 | 92° | 51° | 71° | — | — |
| 1999 | 69° | 38° | 53° | — | — |
| 1998 | 79° | 51° | 65° | — | — |
| 1997 | 85° | 53° | 69° | 0.08" | — |
| 1996 | 74° | 50° | 62° | — | — |
| 1995 | 78° | 45° | 61° | — | — |
| 1994 | 86° | 53° | 70° | — | — |
| 1993 | 49° | 32° | 40° | 1.17" | 1.5" |
| 1992 | 86° | 60° | 73° | — | — |
| 1991 | 76° | 50° | 63° | — | — |
| 1990warmest | 99° | 57° | 78° | — | — |
| 1989 | 60° | 34° | 47° | — | — |
| 1988 | 51° | 42° | 47° | 0.33" | — |
| 1987 | 84° | 31° | 57° | — | — |
| 1986 | 64° | 44° | 54° | — | — |
| 1985 | 74° | 45° | 59° | — | — |
| 1984 | 70° | 52° | 61° | — | — |
| 1983 | 78° | 45° | 61° | — | — |
| 1982 | 58° | 46° | 52° | 0.15" | — |
| 1981 | 86° | 50° | 68° | — | — |
| 1980 | 74° | 46° | 60° | 0.05" | — |
| 1979 | 68° | 44° | 56° | — | — |
| 1978 | 75° | 37° | 56° | — | — |
| 1977 | 72° | 48° | 60° | 0.2" | — |
| 1976 | 75° | 47° | 61° | — | — |
| 1975 | 66° | 40° | 53° | — | — |
| 1974 | 58° | 40° | 49° | — | — |
| 1973 | 81° | 52° | 66° | — | — |
| 1972 | 69° | 50° | 60° | 0.79" | — |
| 1971 | 93° | 46° | 70° | — | — |
55 years of data from NORTHGLENN