Weather on June 23
Boulder, CO
55 Years of Data
Avg High
86°F
Avg Low
55°F
Warmest
2012
83°F avg
Coldest
2019
53°F avg
About This Date
June 23rd in Boulder, CO typically brings warm summer weather, with average highs around 86°F and lows near 55°F — a 31°F daily swing. Over 55 years of records, the warmest June 23rd was in 2012 (83°F average), while the coldest was 2019 (53°F) — a 30°F range across recorded history. Rain or other precipitation has occurred on about 22% of June 23rd dates historically, with the wettest June 23rd recording 0.94" of rain. The last decade has been 1.6°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.6°F cooler on this date compared to 20-30 years ago.
Planning for June 23rd in Boulder, CO? Stay hydrated and seek shade during peak afternoon hours.
Cooling Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 68° | 57° | 63° | — | — |
| 2024 | 97° | 64° | 80° | — | — |
| 2023 | 79° | 59° | 69° | — | — |
| 2022 | 91° | 57° | 74° | — | — |
| 2021 | 97° | 63° | 80° | — | — |
| 2020 | 82° | 55° | 69° | — | — |
| 2019coldest | 64° | 43° | 53° | — | — |
| 2018 | 84° | 55° | 70° | — | — |
| 2017 | 75° | 45° | 60° | 0.58" | — |
| 2016 | 89° | 56° | 72° | 0.2" | — |
| 2015 | 86° | 53° | 70° | — | — |
| 2014 | 76° | 48° | 62° | 0.05" | — |
| 2013 | 86° | 51° | 69° | — | — |
| 2012warmest | 102° | 64° | 83° | — | — |
| 2011 | 86° | 52° | 69° | — | — |
| 2010 | 85° | 48° | 66° | — | — |
| 2009 | 85° | 53° | 69° | 0.05" | — |
| 2008 | 82° | 55° | 69° | — | — |
| 2007 | 92° | 49° | 70° | — | — |
| 2006 | 91° | 48° | 70° | — | — |
| 2005 | 89° | 63° | 76° | 0.94" | — |
| 2004 | 80° | 47° | 63° | — | — |
| 2003 | 76° | 52° | 64° | 0.56" | — |
| 2002 | 92° | 58° | 75° | — | — |
| 2001 | 95° | 55° | 75° | — | — |
| 2000 | 92° | 62° | 77° | — | — |
| 1999 | 87° | 51° | 69° | — | — |
| 1998 | 86° | 53° | 70° | — | — |
| 1997 | 87° | 57° | 72° | — | — |
| 1996 | 82° | 49° | 65° | — | — |
| 1995 | 77° | 51° | 64° | — | — |
| 1994 | 85° | 53° | 69° | — | — |
| 1993 | 84° | 53° | 69° | — | — |
| 1992 | 84° | 56° | 70° | — | — |
| 1991 | 84° | 54° | 69° | — | — |
| 1990 | 93° | 50° | 72° | — | — |
| 1989 | 68° | 49° | 58° | — | — |
| 1988 | 92° | 61° | 76° | — | — |
| 1987 | 79° | 51° | 65° | 0.03" | — |
| 1986 | 89° | 54° | 71° | — | — |
| 1985 | 90° | 69° | 79° | — | — |
| 1984 | 80° | 55° | 68° | 0.2" | — |
| 1983 | 84° | 55° | 70° | 0.15" | — |
| 1982 | 83° | 52° | 67° | — | — |
| 1981 | 96° | 60° | 78° | — | — |
| 1980 | 99° | 55° | 77° | — | — |
| 1979 | 89° | 60° | 75° | — | — |
| 1978 | 93° | 60° | 77° | 0.1" | — |
| 1977 | 84° | 56° | 70° | — | — |
| 1976 | 79° | 52° | 65° | 0.36" | — |
| 1975 | 83° | 49° | 66° | — | — |
| 1974 | 80° | 52° | 66° | — | — |
| 1973 | 90° | 58° | 74° | — | — |
| 1972 | 83° | 54° | 68° | 0.05" | — |
| 1971 | 97° | 58° | 77° | — | — |
55 years of data from BOULDER MUNI AP