Weather on September 23
Greeley, CO
55 Years of Data
Avg High
77°F
Avg Low
44°F
Warmest
2016
74°F avg
Coldest
2000
35°F avg
About This Date
September 23rd in Greeley, CO typically brings pleasant fall weather, with average highs around 77°F and lows near 44°F — a 33°F daily swing. Over 53 years of records, the warmest September 23rd was in 2016 (74°F average), while the coldest was 2000 (35°F) — a 39°F range across recorded history. Precipitation has occurred on 13% of recorded September 23rd dates, with snow falling 2% of the time (heaviest snowfall: 1.5"). The last decade has been 7.9°F warmer on this date compared to 20-30 years ago.
The last decade has been 7.9°F warmer on this date compared to 20-30 years ago.
Planning for September 23rd in Greeley, CO? Great weather for outdoor activities.
Warming Trend
1.0°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 71° | 48° | 60° | 4.27" | — |
| 2024 | 83° | 41° | 62° | — | — |
| 2023 | 81° | 47° | 64° | — | — |
| 2022 | 82° | 45° | 63° | 0.05" | — |
| 2021 | 85° | 44° | 64° | — | — |
| 2020 | 91° | 57° | 74° | — | — |
| 2019 | 82° | 46° | 64° | — | — |
| 2018 | 90° | 47° | 68° | — | — |
| 2017 | 60° | 43° | 51° | — | — |
| 2016warmest | 90° | 58° | 74° | — | — |
| 2015 | 83° | 55° | 69° | — | — |
| 2014 | 81° | 56° | 68° | — | — |
| 2013 | 78° | 50° | 64° | — | — |
| 2012 | 88° | 41° | 64° | — | — |
| 2011 | 89° | 42° | 66° | — | — |
| 2009 | 54° | 42° | 48° | 0.18" | — |
| 2008 | 78° | 50° | 64° | — | — |
| 2007 | 84° | 45° | 64° | — | — |
| 2005 | 83° | 44° | 63° | — | — |
| 2004 | 76° | 38° | 57° | — | — |
| 2003 | 89° | 42° | 66° | — | — |
| 2002 | 70° | 41° | 55° | — | — |
| 2001 | 73° | 43° | 58° | — | — |
| 2000coldest | 37° | 32° | 35° | 0.89" | 1.5" |
| 1999 | 82° | 46° | 64° | — | — |
| 1998 | 73° | 47° | 60° | 0.03" | — |
| 1997 | 61° | 48° | 54° | 0.3" | — |
| 1996 | 62° | 45° | 53° | — | — |
| 1995 | 66° | 40° | 53° | 0.25" | — |
| 1994 | 78° | 41° | 60° | — | — |
| 1993 | 63° | 48° | 55° | — | — |
| 1992 | 91° | 44° | 68° | — | — |
| 1991 | 73° | 33° | 53° | — | — |
| 1990 | 77° | 37° | 57° | — | — |
| 1989 | 68° | 37° | 53° | — | — |
| 1988 | 76° | 42° | 59° | — | — |
| 1987 | 88° | 39° | 63° | — | — |
| 1986 | 73° | 56° | 64° | — | — |
| 1985 | 56° | 32° | 44° | — | — |
| 1984 | 87° | 40° | 63° | — | — |
| 1983 | 86° | 33° | 60° | — | — |
| 1982 | 75° | 48° | 62° | — | — |
| 1981 | 89° | 51° | 70° | — | — |
| 1980 | 77° | 36° | 56° | — | — |
| 1979 | 89° | 45° | 67° | — | — |
| 1978 | 86° | 40° | 63° | — | — |
| 1977 | 77° | 49° | 63° | — | — |
| 1976 | 76° | 45° | 60° | — | — |
| 1975 | 75° | 33° | 54° | — | — |
| 1974 | 82° | 39° | 61° | — | — |
| 1973 | 78° | 53° | 66° | — | — |
| 1972 | 80° | 48° | 64° | — | — |
| 1971 | 69° | 31° | 50° | — | — |
53 years of data from GREELEY UNC