Weather on September 30
Greeley, CO
55 Years of Data
Avg High
76°F
Avg Low
44°F
Warmest
2024
71°F avg
Coldest
1985
31°F avg
About This Date
September 30th in Greeley, CO typically brings pleasant fall weather, with average highs around 76°F and lows near 44°F — a 32°F daily swing. Over 55 years of records, the warmest September 30th was in 2024 (71°F average), while the coldest was 1985 (31°F) — a 40°F range across recorded history. Rain or other precipitation has occurred on about 25% of September 30th dates historically, with the wettest September 30th recording 1.19" of rain. The last decade has been 5.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.0°F warmer on this date compared to 20-30 years ago.
Planning for September 30th in Greeley, CO? Great weather for outdoor activities.
Warming Trend
1.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 83° | 47° | 65° | — | — |
| 2024warmest | 88° | 54° | 71° | — | — |
| 2023 | 88° | 48° | 68° | — | — |
| 2022 | 81° | 50° | 65° | — | — |
| 2021 | 66° | 45° | 55° | — | — |
| 2020 | 80° | 47° | 63° | — | — |
| 2019 | 87° | 48° | 68° | — | — |
| 2018 | 81° | 47° | 64° | — | — |
| 2017 | 66° | 44° | 55° | 0.41" | — |
| 2016 | 82° | 52° | 67° | — | — |
| 2015 | 82° | 50° | 66° | 0.03" | — |
| 2014 | 70° | 43° | 56° | 1.19" | — |
| 2013 | 81° | 49° | 65° | — | — |
| 2012 | 79° | 54° | 66° | 0.03" | — |
| 2011 | 80° | 40° | 60° | — | — |
| 2010 | 85° | 44° | 64° | — | — |
| 2009 | 87° | 44° | 66° | — | — |
| 2008 | 82° | 44° | 63° | — | — |
| 2007 | 74° | 46° | 60° | 0.08" | — |
| 2006 | 86° | 41° | 64° | — | — |
| 2005 | 90° | 42° | 66° | 0.1" | — |
| 2004 | 56° | 52° | 54° | 0.51" | — |
| 2003 | 51° | 38° | 44° | — | — |
| 2002 | 80° | 47° | 63° | — | — |
| 2001 | 76° | 51° | 63° | — | — |
| 2000 | 81° | 41° | 61° | — | — |
| 1999 | 66° | 41° | 54° | — | — |
| 1998 | 66° | 50° | 58° | — | — |
| 1997 | 85° | 44° | 64° | — | — |
| 1996 | 84° | 44° | 64° | — | — |
| 1995 | 63° | 45° | 54° | 0.13" | — |
| 1994 | 80° | 59° | 70° | 0.05" | — |
| 1993 | 84° | 41° | 63° | — | — |
| 1992 | 85° | 39° | 62° | — | — |
| 1991 | 64° | 53° | 59° | 0.46" | — |
| 1990 | 77° | 49° | 63° | — | — |
| 1989 | 89° | 46° | 68° | — | — |
| 1988 | 73° | 35° | 54° | — | — |
| 1987 | 78° | 36° | 57° | — | — |
| 1986 | 67° | 37° | 52° | 0.05" | — |
| 1985coldest | 44° | 17° | 31° | — | — |
| 1984 | 70° | 24° | 47° | — | — |
| 1983 | 78° | 50° | 64° | — | — |
| 1982 | 49° | 40° | 44° | 0.08" | — |
| 1981 | 72° | 49° | 60° | — | — |
| 1980 | 90° | 41° | 65° | — | — |
| 1979 | 88° | 42° | 65° | — | — |
| 1978 | 77° | 36° | 56° | — | — |
| 1977 | 77° | 49° | 63° | — | — |
| 1976 | 81° | 38° | 59° | — | — |
| 1975 | 71° | 40° | 55° | 0.69" | — |
| 1974 | 78° | 33° | 56° | — | — |
| 1973 | 74° | 41° | 57° | — | — |
| 1972 | 79° | 34° | 56° | — | — |
| 1971 | 73° | 47° | 60° | 0.15" | — |
55 years of data from GREELEY UNC