Weather on May 28
Boulder, CO
55 Years of Data
Avg High
75°F
Avg Low
48°F
Warmest
2006
78°F avg
Coldest
1996
44°F avg
About This Date
May 28th in Boulder, CO typically brings pleasant spring weather, with average highs around 75°F and lows near 48°F — a 27°F daily swing. Over 55 years of records, the warmest May 28th was in 2006 (78°F average), while the coldest was 1996 (44°F) — a 34°F range across recorded history. Rain or other precipitation has occurred on about 27% of May 28th dates historically, with the wettest May 28th recording 2.54" of rain. The last decade has been 1.9°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.9°F cooler on this date compared to 20-30 years ago.
Planning for May 28th in Boulder, CO? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 68° | 48° | 58° | — | — |
| 2024 | 81° | 50° | 65° | — | — |
| 2023 | 75° | 48° | 62° | — | — |
| 2022 | 82° | 55° | 69° | — | — |
| 2021 | 77° | 46° | 62° | — | — |
| 2020 | 72° | 54° | 63° | — | — |
| 2019 | 52° | 45° | 48° | — | — |
| 2018 | 64° | 54° | 59° | — | — |
| 2017 | 72° | 37° | 54° | — | — |
| 2016 | 72° | 40° | 56° | 0.15" | — |
| 2015 | 74° | 46° | 60° | — | — |
| 2014 | 85° | 50° | 67° | — | — |
| 2013 | 78° | 46° | 62° | — | — |
| 2012 | 76° | 42° | 59° | — | — |
| 2011 | 68° | 46° | 57° | — | — |
| 2010 | 91° | 54° | 72° | — | — |
| 2009 | 72° | 47° | 59° | — | — |
| 2008 | 70° | 45° | 57° | 0.13" | — |
| 2007 | 82° | 50° | 66° | 0.08" | — |
| 2006warmest | 89° | 66° | 78° | — | — |
| 2005 | 76° | 42° | 59° | — | — |
| 2004 | 83° | 50° | 66° | — | — |
| 2003 | 82° | 52° | 67° | — | — |
| 2002 | 81° | 48° | 64° | — | — |
| 2001 | 70° | 48° | 59° | 0.03" | — |
| 2000 | 95° | 58° | 76° | — | — |
| 1999 | 76° | 41° | 58° | 0.03" | — |
| 1998 | 82° | 51° | 67° | — | — |
| 1997 | 68° | 43° | 55° | 0.03" | — |
| 1996coldest | 49° | 39° | 44° | 0.23" | — |
| 1995 | 57° | 41° | 49° | 1.19" | — |
| 1994 | 74° | 51° | 62° | — | — |
| 1993 | 75° | 49° | 62° | — | — |
| 1992 | 57° | 37° | 47° | 0.58" | — |
| 1991 | 72° | 53° | 62° | — | — |
| 1990 | 75° | 47° | 61° | — | — |
| 1989 | 91° | 51° | 71° | — | — |
| 1988 | 85° | 48° | 66° | — | — |
| 1987 | 73° | 40° | 56° | — | — |
| 1986 | 69° | 48° | 59° | 0.48" | — |
| 1985 | 86° | 47° | 66° | — | — |
| 1984 | 66° | 42° | 54° | — | — |
| 1983 | 80° | 57° | 69° | — | — |
| 1982 | 81° | 54° | 67° | — | — |
| 1981 | 73° | 51° | 62° | 2.54" | — |
| 1980 | 84° | 47° | 65° | — | — |
| 1979 | 86° | 50° | 68° | — | — |
| 1978 | 63° | 43° | 53° | 1.37" | — |
| 1977 | 73° | 54° | 63° | — | — |
| 1976 | 82° | 47° | 64° | — | — |
| 1975 | 67° | 40° | 53° | 2.51" | — |
| 1974 | 90° | 53° | 71° | — | — |
| 1973 | 68° | 38° | 53° | — | — |
| 1972 | 63° | 51° | 57° | 0.38" | — |
| 1971 | 74° | 45° | 59° | 0.03" | — |
55 years of data from BOULDER MUNI AP