Weather on May 21
Greeley, CO
55 Years of Data
Avg High
76°F
Avg Low
46°F
Warmest
2005
79°F avg
Coldest
2019
36°F avg
About This Date
May 21st in Greeley, CO typically brings pleasant spring weather, with average highs around 76°F and lows near 46°F — a 30°F daily swing. Over 54 years of records, the warmest May 21st was in 2005 (79°F average), while the coldest was 2019 (36°F) — a 43°F range across recorded history. Rain or other precipitation has occurred on about 26% of May 21st dates historically, with the wettest May 21st recording 1.7" of rain. The last decade has been 6.7°F cooler on this date compared to 20-30 years ago.
The last decade has been 6.7°F cooler on this date compared to 20-30 years ago.
Planning for May 21st in Greeley, CO? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 75° | 46° | 61° | — | — |
| 2024 | 80° | 39° | 60° | 0.1" | — |
| 2023 | 80° | 48° | 64° | — | — |
| 2022 | 58° | 34° | 46° | 0.03" | — |
| 2021 | 82° | 50° | 66° | 0.1" | — |
| 2020 | 89° | 44° | 67° | — | — |
| 2019coldest | 41° | 31° | 36° | 0.79" | — |
| 2018 | 77° | 41° | 59° | — | — |
| 2017 | 67° | 39° | 53° | — | — |
| 2016 | 84° | 52° | 68° | — | — |
| 2015 | 56° | 40° | 48° | — | — |
| 2014 | 76° | 53° | 64° | 0.3" | — |
| 2013 | 71° | 46° | 59° | — | — |
| 2012 | 89° | 46° | 68° | — | — |
| 2011 | 74° | 44° | 59° | — | — |
| 2010 | 79° | 45° | 62° | — | — |
| 2009 | 80° | 50° | 65° | 0.03" | — |
| 2007 | 81° | 48° | 64° | — | — |
| 2006 | 97° | 52° | 74° | 0.03" | — |
| 2005warmest | 98° | 59° | 79° | — | — |
| 2004 | 86° | 56° | 71° | — | — |
| 2003 | 82° | 35° | 59° | — | — |
| 2002 | 86° | 48° | 67° | — | — |
| 2001 | 60° | 32° | 46° | — | — |
| 2000 | 81° | 45° | 63° | — | — |
| 1999 | 84° | 49° | 66° | — | — |
| 1998 | 83° | 56° | 69° | 0.58" | — |
| 1997 | 81° | 49° | 65° | — | — |
| 1996 | 78° | 46° | 62° | — | — |
| 1995 | 75° | 42° | 59° | 0.05" | — |
| 1994 | 79° | 47° | 63° | — | — |
| 1993 | 83° | 50° | 66° | — | — |
| 1992 | 80° | 58° | 69° | 0.1" | — |
| 1991 | 84° | 49° | 66° | — | — |
| 1990 | 82° | 42° | 62° | — | — |
| 1989 | 78° | 51° | 65° | — | — |
| 1988 | 64° | 44° | 54° | — | — |
| 1987 | 55° | 41° | 48° | 1.7" | — |
| 1986 | 88° | 49° | 68° | — | — |
| 1985 | 66° | 40° | 53° | — | — |
| 1984 | 76° | 51° | 63° | 0.3" | — |
| 1983 | 74° | 36° | 55° | — | — |
| 1982 | 75° | 40° | 57° | — | — |
| 1981 | 70° | 43° | 56° | — | — |
| 1980 | 82° | 46° | 64° | — | — |
| 1979 | 74° | 44° | 59° | — | — |
| 1978 | 70° | 49° | 59° | 1.17" | — |
| 1977 | 65° | 42° | 53° | — | — |
| 1976 | 82° | 51° | 67° | 0.89" | — |
| 1975 | 54° | 39° | 46° | — | — |
| 1974 | 70° | 38° | 54° | — | — |
| 1973 | 84° | 56° | 70° | — | — |
| 1972 | 83° | 49° | 66° | — | — |
| 1971 | 78° | 43° | 60° | — | — |
54 years of data from GREELEY UNC