Weather on June 30
Boulder, CO
55 Years of Data
Avg High
86°F
Avg Low
56°F
Warmest
1994
82°F avg
Coldest
1995
53°F avg
About This Date
June 30th in Boulder, CO typically brings warm summer weather, with average highs around 86°F and lows near 56°F — a 30°F daily swing. Over 55 years of records, the warmest June 30th was in 1994 (82°F average), while the coldest was 1995 (53°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 24% of June 30th dates historically, with the wettest June 30th recording 1.02" of rain. The last decade has been 2.7°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.7°F cooler on this date compared to 20-30 years ago.
Planning for June 30th in Boulder, CO? Stay hydrated and seek shade during peak afternoon hours.
Cooling Trend
0.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 79° | 61° | 70° | — | — |
| 2024 | 90° | 61° | 75° | — | — |
| 2023 | 70° | 54° | 62° | — | — |
| 2022 | 77° | 61° | 69° | — | — |
| 2021 | 79° | 55° | 67° | — | — |
| 2020 | 81° | 57° | 69° | — | — |
| 2019 | 88° | 63° | 75° | 0.05" | — |
| 2018 | 70° | 54° | 62° | — | — |
| 2017 | 77° | 51° | 64° | 0.13" | — |
| 2016 | 79° | 58° | 68° | 0.03" | — |
| 2015 | 93° | 57° | 75° | — | — |
| 2014 | 93° | 60° | 77° | — | — |
| 2013 | 80° | 61° | 70° | 0.1" | — |
| 2012 | 97° | 60° | 78° | — | — |
| 2011 | 89° | 60° | 75° | 0.03" | — |
| 2010 | 91° | 51° | 71° | — | — |
| 2009 | 89° | 54° | 71° | — | — |
| 2008 | 90° | 50° | 70° | — | — |
| 2007 | 95° | 52° | 73° | — | — |
| 2006 | 93° | 59° | 76° | — | — |
| 2005 | 83° | 50° | 66° | — | — |
| 2004 | 77° | 51° | 64° | 0.58" | — |
| 2003 | 86° | 51° | 69° | — | — |
| 2002 | 94° | 63° | 78° | — | — |
| 2001 | 97° | 58° | 77° | — | — |
| 2000 | 90° | 52° | 71° | — | — |
| 1999 | 84° | 51° | 68° | — | — |
| 1998 | 89° | 59° | 74° | — | — |
| 1997 | 90° | 53° | 71° | — | — |
| 1996 | 85° | 56° | 70° | — | — |
| 1995coldest | 58° | 48° | 53° | 0.23" | — |
| 1994warmest | 99° | 65° | 82° | — | — |
| 1993 | 91° | 53° | 72° | — | — |
| 1992 | 90° | 56° | 73° | — | — |
| 1991 | 89° | 60° | 75° | — | — |
| 1990 | 98° | 59° | 79° | — | — |
| 1989 | 94° | 50° | 72° | — | — |
| 1988 | 77° | 64° | 71° | — | — |
| 1987 | 70° | 50° | 60° | 1.02" | — |
| 1986 | 84° | 62° | 73° | — | — |
| 1985 | 86° | 55° | 71° | — | — |
| 1984 | 90° | 55° | 72° | 0.13" | — |
| 1983 | 88° | 53° | 70° | — | — |
| 1982 | 85° | 55° | 70° | — | — |
| 1981 | 88° | 52° | 70° | — | — |
| 1980 | 94° | 58° | 76° | 0.81" | — |
| 1979 | 90° | 55° | 72° | — | — |
| 1978 | 84° | 59° | 72° | 0.38" | — |
| 1977 | 87° | 50° | 69° | — | — |
| 1976 | 83° | 53° | 68° | — | — |
| 1975 | 93° | 58° | 75° | — | — |
| 1974 | 88° | 58° | 73° | — | — |
| 1973 | 92° | 58° | 75° | — | — |
| 1972 | 87° | 57° | 72° | 0.05" | — |
| 1971 | 78° | 56° | 67° | 0.15" | — |
55 years of data from BOULDER MUNI AP