Weather on September 15
Greeley, CO
55 Years of Data
Avg High
81°F
Avg Low
48°F
Warmest
2015
73°F avg
Coldest
1982
52°F avg
About This Date
September 15th in Greeley, CO typically brings warm fall weather, with average highs around 81°F and lows near 48°F — a 33°F daily swing. Over 54 years of records, the warmest September 15th was in 2015 (73°F average), while the coldest was 1982 (52°F) — a 21°F range across recorded history. Rain or other precipitation has occurred on about 24% of September 15th dates historically, with the wettest September 15th recording 2.03" of rain. The last decade has been 5.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.1°F warmer on this date compared to 20-30 years ago.
Planning for September 15th in Greeley, CO? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 87° | 50° | 69° | — | — |
| 2024 | 92° | 53° | 72° | — | — |
| 2023 | 70° | 52° | 61° | 0.38" | — |
| 2022 | 82° | 57° | 70° | — | — |
| 2021 | 91° | 52° | 71° | 0.05" | — |
| 2020 | 93° | 49° | 71° | — | — |
| 2019 | 88° | 52° | 70° | — | — |
| 2018 | 95° | 52° | 73° | — | — |
| 2017 | 87° | 55° | 71° | — | — |
| 2016 | 79° | 47° | 63° | 0.13" | — |
| 2015warmest | 90° | 57° | 73° | — | — |
| 2014 | 79° | 41° | 60° | — | — |
| 2013 | 81° | 55° | 68° | 2.03" | — |
| 2012 | 89° | 47° | 68° | — | — |
| 2011 | 62° | 45° | 53° | 1.14" | — |
| 2010 | 93° | 43° | 68° | — | — |
| 2009 | 88° | 53° | 70° | — | — |
| 2008 | 78° | 43° | 60° | — | — |
| 2007 | 95° | 47° | 71° | — | — |
| 2005 | 83° | 41° | 62° | — | — |
| 2004 | 76° | 49° | 62° | — | — |
| 2003 | 86° | 38° | 62° | — | — |
| 2002 | 87° | 45° | 66° | — | — |
| 2001 | 70° | 55° | 62° | 0.2" | — |
| 2000 | 92° | 48° | 70° | — | — |
| 1999 | 74° | 41° | 57° | — | — |
| 1998 | 82° | 48° | 65° | — | — |
| 1997 | 90° | 54° | 72° | — | — |
| 1996 | 73° | 52° | 62° | — | — |
| 1995 | 89° | 49° | 69° | — | — |
| 1994 | 75° | 45° | 60° | — | — |
| 1993 | 81° | 36° | 58° | — | — |
| 1992 | 88° | 56° | 72° | — | — |
| 1991 | 67° | 49° | 58° | — | — |
| 1990 | 88° | 49° | 68° | — | — |
| 1989 | 84° | 38° | 61° | — | — |
| 1988 | 70° | 42° | 56° | 0.13" | — |
| 1987 | 68° | 52° | 60° | 0.23" | — |
| 1986 | 72° | 54° | 63° | 0.05" | — |
| 1985 | 85° | 55° | 70° | — | — |
| 1984 | 62° | 45° | 53° | — | — |
| 1983 | 76° | 47° | 61° | — | — |
| 1982coldest | 61° | 43° | 52° | 1.09" | — |
| 1981 | 80° | 47° | 63° | 0.89" | — |
| 1980 | 89° | 49° | 69° | — | — |
| 1979 | 76° | 36° | 56° | — | — |
| 1978 | 86° | 46° | 66° | — | — |
| 1977 | 83° | 46° | 64° | — | — |
| 1976 | 73° | 45° | 59° | 0.74" | — |
| 1975 | 87° | 45° | 66° | — | — |
| 1974 | 70° | 48° | 59° | — | — |
| 1973 | 83° | 41° | 62° | 0.05" | — |
| 1972 | 82° | 50° | 66° | — | — |
| 1971 | 68° | 39° | 54° | — | — |
54 years of data from GREELEY UNC