Weather on June 15
Boulder, CO
55 Years of Data
Avg High
84°F
Avg Low
52°F
Warmest
2021
80°F avg
Coldest
1998
54°F avg
About This Date
June 15th in Boulder, CO typically brings warm summer weather, with average highs around 84°F and lows near 52°F — a 32°F daily swing. Over 55 years of records, the warmest June 15th was in 2021 (80°F average), while the coldest was 1998 (54°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 20% of June 15th dates historically, with the wettest June 15th recording 1.35" of rain. The last decade has been 7.9°F warmer on this date compared to 20-30 years ago.
The last decade has been 7.9°F warmer on this date compared to 20-30 years ago.
Planning for June 15th in Boulder, CO? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 95° | 59° | 77° | — | — |
| 2024 | 95° | 55° | 75° | — | — |
| 2023 | 73° | 54° | 63° | — | — |
| 2022 | 88° | 54° | 71° | — | — |
| 2021warmest | 95° | 64° | 80° | — | — |
| 2020 | 90° | 57° | 73° | — | — |
| 2019 | 81° | 54° | 67° | — | — |
| 2018 | 90° | 63° | 76° | — | — |
| 2017 | 89° | 51° | 70° | — | — |
| 2016 | 89° | 52° | 70° | — | — |
| 2015 | 79° | 53° | 66° | — | — |
| 2014 | 76° | 41° | 58° | — | — |
| 2013 | 83° | 52° | 67° | — | — |
| 2012 | 84° | 57° | 71° | 0.15" | — |
| 2011 | 88° | 49° | 68° | — | — |
| 2010 | 78° | 45° | 61° | — | — |
| 2009 | 68° | 47° | 57° | 0.74" | — |
| 2008 | 86° | 52° | 69° | — | — |
| 2007 | 88° | 49° | 68° | — | — |
| 2006 | 95° | 55° | 75° | — | — |
| 2005 | 81° | 49° | 65° | 0.05" | — |
| 2004 | 85° | 53° | 69° | — | — |
| 2003 | 86° | 48° | 67° | — | — |
| 2002 | 80° | 51° | 66° | 0.03" | — |
| 2001 | 82° | 45° | 63° | — | — |
| 2000 | 90° | 56° | 73° | — | — |
| 1999 | 67° | 48° | 57° | 0.86" | — |
| 1998coldest | 69° | 40° | 54° | 0.46" | — |
| 1997 | 78° | 47° | 62° | 0.2" | — |
| 1996 | 79° | 56° | 67° | 1.35" | — |
| 1995 | 87° | 57° | 72° | — | — |
| 1994 | 84° | 46° | 65° | — | — |
| 1993 | 93° | 53° | 73° | — | — |
| 1992 | 77° | 49° | 63° | — | — |
| 1991 | 72° | 50° | 61° | 0.28" | — |
| 1990 | 80° | 52° | 66° | — | — |
| 1989 | 83° | 42° | 62° | — | — |
| 1988 | 81° | 50° | 65° | 0.28" | — |
| 1987 | 86° | 51° | 69° | — | — |
| 1986 | 91° | 51° | 71° | — | — |
| 1985 | 92° | 52° | 72° | — | — |
| 1984 | 81° | 54° | 67° | — | — |
| 1983 | 77° | 47° | 62° | — | — |
| 1982 | 74° | 51° | 62° | 0.3" | — |
| 1981 | 72° | 40° | 56° | — | — |
| 1980 | 90° | 53° | 71° | — | — |
| 1979 | 91° | 57° | 74° | — | — |
| 1978 | 95° | 51° | 73° | — | — |
| 1977 | 92° | 58° | 75° | — | — |
| 1976 | 75° | 45° | 60° | — | — |
| 1975 | 83° | 50° | 66° | — | — |
| 1974 | 89° | 57° | 73° | — | — |
| 1973 | 77° | 58° | 67° | — | — |
| 1972 | 82° | 50° | 66° | — | — |
| 1971 | 84° | 55° | 70° | — | — |
55 years of data from BOULDER MUNI AP