Weather on May 27
Boulder, CO
55 Years of Data
Avg High
74°F
Avg Low
47°F
Warmest
1974
72°F avg
Coldest
1992
46°F avg
About This Date
May 27th in Boulder, CO typically brings pleasant spring weather, with average highs around 74°F and lows near 47°F — a 27°F daily swing. Over 55 years of records, the warmest May 27th was in 1974 (72°F average), while the coldest was 1992 (46°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 38% of May 27th dates historically, with the wettest May 27th recording 2.31" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for May 27th in Boulder, CO? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
0.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 70° | 46° | 58° | — | — |
| 2024 | 79° | 52° | 65° | — | — |
| 2023 | 77° | 50° | 64° | — | — |
| 2022 | 88° | 54° | 71° | — | — |
| 2021 | 72° | 50° | 61° | — | — |
| 2020 | 79° | 50° | 64° | — | — |
| 2019 | 52° | 43° | 47° | — | — |
| 2018 | 81° | 59° | 70° | — | — |
| 2017 | 65° | 46° | 55° | 0.46" | — |
| 2016 | 62° | 45° | 53° | 0.15" | — |
| 2015 | 74° | 46° | 60° | — | — |
| 2014 | 83° | 48° | 65° | 0.05" | — |
| 2013 | 84° | 52° | 68° | — | — |
| 2012 | 86° | 53° | 70° | — | — |
| 2011 | 69° | 48° | 59° | — | — |
| 2010 | 84° | 49° | 66° | — | — |
| 2009 | 68° | 39° | 54° | — | — |
| 2008 | 53° | 41° | 47° | 2.21" | — |
| 2007 | 81° | 44° | 62° | 0.03" | — |
| 2006 | 92° | 53° | 72° | — | — |
| 2005 | 70° | 44° | 57° | — | — |
| 2004 | 76° | 56° | 66° | 0.03" | — |
| 2003 | 84° | 50° | 67° | — | — |
| 2002 | 79° | 46° | 62° | — | — |
| 2001 | 76° | 54° | 65° | 0.05" | — |
| 2000 | 80° | 44° | 62° | — | — |
| 1999 | 68° | 40° | 54° | 0.41" | — |
| 1998 | 84° | 45° | 64° | — | — |
| 1997 | 66° | 40° | 53° | 0.03" | — |
| 1996 | 61° | 37° | 49° | 0.03" | — |
| 1995 | 61° | 41° | 51° | 2.31" | — |
| 1994 | 80° | 41° | 61° | — | — |
| 1993 | 76° | 60° | 68° | — | — |
| 1992coldest | 54° | 38° | 46° | 0.51" | — |
| 1991 | 73° | 50° | 62° | 0.05" | — |
| 1990 | 67° | 45° | 56° | 0.03" | — |
| 1989 | 81° | 39° | 60° | — | — |
| 1988 | 84° | 50° | 67° | 0.18" | — |
| 1987 | 70° | 38° | 54° | — | — |
| 1986 | 65° | 42° | 53° | 0.13" | — |
| 1985 | 83° | 46° | 64° | 0.05" | — |
| 1984 | 76° | 44° | 60° | — | — |
| 1983 | 83° | 61° | 72° | — | — |
| 1982 | 81° | 48° | 64° | — | — |
| 1981 | 78° | 55° | 67° | — | — |
| 1980 | 80° | 44° | 62° | — | — |
| 1979 | 78° | 49° | 63° | — | — |
| 1978 | 69° | 48° | 59° | 0.51" | — |
| 1977 | 73° | 39° | 56° | 0.05" | — |
| 1976 | 75° | 44° | 60° | — | — |
| 1975 | 69° | 40° | 54° | — | — |
| 1974warmest | 89° | 56° | 72° | — | — |
| 1973 | 64° | 41° | 53° | — | — |
| 1972 | 73° | 53° | 63° | 0.2" | — |
| 1971 | 71° | 44° | 58° | 0.05" | — |
55 years of data from BOULDER MUNI AP