Weather on June 20
Longmont, CO
55 Years of Data
Avg High
85°F
Avg Low
52°F
Warmest
1989
80°F avg
Coldest
2004
55°F avg
About This Date
June 20th in Longmont, CO typically brings warm summer weather, with average highs around 85°F and lows near 52°F — a 33°F daily swing. Over 55 years of records, the warmest June 20th was in 1989 (80°F average), while the coldest was 2004 (55°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 24% of June 20th dates historically, with the wettest June 20th recording 2.82" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for June 20th in Longmont, 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 | 98° | 56° | 77° | — | — |
| 2024 | 75° | 52° | 63° | 0.05" | — |
| 2023 | 92° | 52° | 72° | — | — |
| 2022 | 89° | 60° | 75° | — | — |
| 2021 | 88° | 59° | 73° | 0.2" | — |
| 2020 | 67° | 46° | 56° | 0.23" | — |
| 2019 | 84° | 50° | 67° | — | — |
| 2018 | 74° | 53° | 63° | 1.12" | — |
| 2017 | 97° | 53° | 75° | — | — |
| 2016 | 90° | 57° | 73° | — | — |
| 2015 | 90° | 59° | 74° | — | — |
| 2014 | 87° | 49° | 68° | — | — |
| 2013 | 89° | 55° | 72° | — | — |
| 2012 | 89° | 55° | 72° | — | — |
| 2011 | 68° | 47° | 57° | 2.82" | — |
| 2010 | 79° | 54° | 66° | — | — |
| 2009 | 76° | 55° | 65° | 0.25" | — |
| 2008 | 81° | 50° | 65° | — | — |
| 2007 | 95° | 53° | 74° | — | — |
| 2006 | 90° | 54° | 72° | — | — |
| 2005 | 87° | 63° | 75° | — | — |
| 2004coldest | 67° | 44° | 55° | 0.18" | — |
| 2003 | 79° | 56° | 67° | — | — |
| 2002 | 91° | 52° | 71° | 0.81" | — |
| 2001 | 74° | 47° | 60° | — | — |
| 2000 | 85° | 53° | 69° | — | — |
| 1999 | 92° | 56° | 74° | — | — |
| 1998 | 91° | 49° | 70° | — | — |
| 1997 | 93° | 49° | 71° | — | — |
| 1996 | 93° | 54° | 73° | — | — |
| 1995 | 89° | 52° | 70° | — | — |
| 1994 | 94° | 55° | 74° | — | — |
| 1993 | 78° | 47° | 62° | — | — |
| 1992 | 79° | 53° | 66° | 0.03" | — |
| 1991 | 85° | 53° | 69° | — | — |
| 1990 | 85° | 51° | 68° | 0.48" | — |
| 1989warmest | 101° | 60° | 80° | — | — |
| 1988 | 96° | 57° | 77° | — | — |
| 1987 | 88° | 52° | 70° | — | — |
| 1986 | 84° | 56° | 70° | — | — |
| 1985 | 94° | 55° | 74° | — | — |
| 1984 | 87° | 54° | 70° | 0.56" | — |
| 1983 | 86° | 59° | 73° | — | — |
| 1982 | 73° | 46° | 60° | — | — |
| 1981 | 93° | 56° | 74° | — | — |
| 1980 | 73° | 48° | 61° | 0.1" | — |
| 1979 | 70° | 46° | 58° | — | — |
| 1978 | 80° | 52° | 66° | — | — |
| 1977 | 79° | 57° | 68° | — | — |
| 1976 | 79° | 46° | 62° | — | — |
| 1975 | 80° | 40° | 60° | — | — |
| 1974 | 97° | 54° | 75° | — | — |
| 1973 | 76° | 43° | 59° | — | — |
| 1972 | 78° | 48° | 63° | 0.03" | — |
| 1971 | 93° | 53° | 73° | — | — |
55 years of data from LONGMONT 2 ESE