Weather on August 28
Boulder, CO
55 Years of Data
Avg High
83°F
Avg Low
55°F
Warmest
2022
81°F avg
Coldest
2004
57°F avg
About This Date
August 28th in Boulder, CO typically brings warm summer weather, with average highs around 83°F and lows near 55°F — a 28°F daily swing. Over 55 years of records, the warmest August 28th was in 2022 (81°F average), while the coldest was 2004 (57°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 20% of August 28th dates historically, with the wettest August 28th recording 0.86" of rain. The last decade has been 2.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.2°F warmer on this date compared to 20-30 years ago.
Planning for August 28th in Boulder, CO? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 81° | 55° | 68° | — | — |
| 2024 | 91° | 55° | 73° | — | — |
| 2023 | 77° | 57° | 67° | — | — |
| 2022warmest | 91° | 72° | 81° | — | — |
| 2021 | 86° | 59° | 73° | — | — |
| 2020 | 77° | 59° | 68° | — | — |
| 2019 | 91° | 54° | 72° | — | — |
| 2018 | 72° | 54° | 63° | — | — |
| 2017 | 90° | 53° | 71° | — | — |
| 2016 | 86° | 56° | 71° | — | — |
| 2015 | 85° | 55° | 70° | — | — |
| 2014 | 66° | 50° | 58° | 0.86" | — |
| 2013 | 93° | 61° | 77° | — | — |
| 2012 | 93° | 61° | 77° | — | — |
| 2011 | 94° | 65° | 79° | 0.03" | — |
| 2010 | 93° | 66° | 80° | — | — |
| 2009 | 84° | 54° | 69° | — | — |
| 2008 | 75° | 56° | 65° | — | — |
| 2007 | 84° | 55° | 70° | 0.46" | — |
| 2006 | 76° | 48° | 62° | — | — |
| 2005 | 88° | 53° | 70° | — | — |
| 2004coldest | 75° | 40° | 57° | 0.13" | — |
| 2003 | 81° | 66° | 73° | — | — |
| 2002 | 76° | 56° | 66° | — | — |
| 2001 | 89° | 57° | 73° | — | — |
| 2000 | 85° | 58° | 71° | 0.03" | — |
| 1999 | 76° | 55° | 65° | 0.43" | — |
| 1998 | 86° | 50° | 68° | — | — |
| 1997 | 88° | 61° | 74° | 0.69" | — |
| 1996 | 85° | 52° | 68° | — | — |
| 1995 | 90° | 58° | 74° | — | — |
| 1994 | 73° | 58° | 65° | 0.1" | — |
| 1993 | 69° | 48° | 59° | — | — |
| 1992 | 85° | 52° | 68° | — | — |
| 1991 | 85° | 62° | 73° | 0.03" | — |
| 1990 | 90° | 60° | 75° | — | — |
| 1989 | 80° | 47° | 63° | — | — |
| 1988 | 76° | 46° | 61° | — | — |
| 1987 | 81° | 46° | 63° | — | — |
| 1986 | 81° | 53° | 67° | — | — |
| 1985 | 90° | 61° | 75° | 0.03" | — |
| 1984 | 95° | 64° | 80° | — | — |
| 1983 | 91° | 55° | 73° | — | — |
| 1982 | 90° | 57° | 73° | — | — |
| 1981 | 82° | 52° | 67° | — | — |
| 1980 | 88° | 54° | 71° | — | — |
| 1979 | 77° | 54° | 65° | — | — |
| 1978 | 76° | 53° | 64° | — | — |
| 1977 | 73° | 48° | 61° | 0.3" | — |
| 1976 | 84° | 48° | 66° | — | — |
| 1975 | 88° | 56° | 72° | — | — |
| 1974 | 81° | 52° | 66° | — | — |
| 1973 | 88° | 61° | 74° | — | — |
| 1972 | 79° | 53° | 66° | — | — |
| 1971 | 84° | 58° | 71° | — | — |
55 years of data from BOULDER MUNI AP