Weather on May 27
Boulder, CO
55 Years of Data
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.
| 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" | — |
Boulder, CO Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Boulder, CO Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Boulder, CO Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Boulder, CO
Boulder, CO has no months that meet our "pleasant" threshold — every season has tradeoffs.