Weather on June 21
Denver, CO
55 Years of Data
Avg High
83°F
Avg Low
55°F
Warmest
2017
84°F avg
Coldest
2003
59°F avg
About This Date
June 21st in Denver, 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 June 21st was in 2017 (84°F average), while the coldest was 2003 (59°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 13% of June 21st dates historically, with the wettest June 21st recording 0.69" of rain. The last decade has been 3.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.2°F warmer on this date compared to 20-30 years ago.
Planning for June 21st in Denver, CO? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 100° | 54° | 77° | — | — |
| 2024 | 92° | 60° | 76° | 0.53" | — |
| 2023 | 77° | 57° | 67° | — | — |
| 2022 | 86° | 55° | 71° | — | — |
| 2021 | 82° | 61° | 71° | — | — |
| 2020 | 83° | 56° | 69° | — | — |
| 2019 | 83° | 55° | 69° | — | — |
| 2018 | 75° | 54° | 64° | — | — |
| 2017warmest | 96° | 71° | 84° | — | — |
| 2016 | 73° | 57° | 65° | — | — |
| 2015 | 89° | 57° | 73° | — | — |
| 2014 | 83° | 57° | 70° | — | — |
| 2013 | 87° | 56° | 71° | — | — |
| 2012 | 74° | 55° | 64° | — | — |
| 2011 | 80° | 46° | 63° | 0.69" | — |
| 2010 | 82° | 56° | 69° | — | — |
| 2009 | 75° | 48° | 62° | — | — |
| 2008 | 83° | 56° | 69° | — | — |
| 2007 | 96° | 60° | 78° | — | — |
| 2006 | 94° | 56° | 75° | — | — |
| 2005 | 90° | 58° | 74° | 0.28" | — |
| 2004 | 72° | 49° | 60° | 0.51" | — |
| 2003coldest | 72° | 46° | 59° | — | — |
| 2002 | 80° | 60° | 70° | 0.03" | — |
| 2001 | 81° | 55° | 68° | — | — |
| 2000 | 83° | 49° | 66° | — | — |
| 1999 | 88° | 65° | 76° | — | — |
| 1998 | 80° | 47° | 63° | — | — |
| 1997 | 92° | 57° | 74° | — | — |
| 1996 | 85° | 58° | 71° | — | — |
| 1995 | 86° | 53° | 70° | — | — |
| 1994 | 83° | 60° | 71° | 0.18" | — |
| 1993 | 82° | 47° | 64° | — | — |
| 1992 | 74° | 51° | 62° | — | — |
| 1991 | 82° | 53° | 68° | — | — |
| 1990 | 82° | 55° | 69° | — | — |
| 1989 | 95° | 55° | 75° | — | — |
| 1988 | 90° | 64° | 77° | — | — |
| 1987 | 76° | 58° | 67° | — | — |
| 1986 | 81° | 52° | 66° | — | — |
| 1985 | 91° | 62° | 77° | — | — |
| 1984 | 76° | 49° | 62° | — | — |
| 1983 | 86° | 55° | 71° | — | — |
| 1982 | 76° | 53° | 64° | — | — |
| 1981 | 93° | 54° | 73° | — | — |
| 1980 | 83° | 56° | 69° | 0.05" | — |
| 1979 | 79° | 54° | 66° | — | — |
| 1978 | 77° | 53° | 65° | — | — |
| 1977 | 77° | 54° | 65° | — | — |
| 1976 | 89° | 62° | 76° | — | — |
| 1975 | 82° | 49° | 65° | — | — |
| 1974 | 91° | 64° | 78° | — | — |
| 1973 | 74° | 49° | 61° | — | — |
| 1972 | 82° | 50° | 66° | — | — |
| 1971 | 89° | 59° | 74° | — | — |
55 years of data from LAKEWOOD