Weather on August 23
Longmont, CO
55 Years of Data
Avg High
86°F
Avg Low
54°F
Warmest
2011
80°F avg
Coldest
1987
55°F avg
About This Date
August 23rd in Longmont, CO typically brings warm summer weather, with average highs around 86°F and lows near 54°F — a 32°F daily swing. Over 55 years of records, the warmest August 23rd was in 2011 (80°F average), while the coldest was 1987 (55°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 29% of August 23rd dates historically, with the wettest August 23rd recording 0.81" of rain. The last decade has been 4.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.6°F warmer on this date compared to 20-30 years ago.
Planning for August 23rd in Longmont, CO? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 81° | 64° | 72° | — | — |
| 2024 | 87° | 58° | 72° | — | — |
| 2023 | 94° | 60° | 77° | — | — |
| 2022 | 87° | 56° | 71° | — | — |
| 2021 | 90° | 56° | 73° | — | — |
| 2020 | 96° | 56° | 76° | — | — |
| 2019 | 88° | 61° | 74° | 0.2" | — |
| 2018 | 79° | 58° | 68° | — | — |
| 2017 | 87° | 58° | 72° | — | — |
| 2016 | 86° | 63° | 74° | — | — |
| 2015 | 77° | 44° | 61° | — | — |
| 2014 | 78° | 56° | 67° | 0.61" | — |
| 2013 | 86° | 58° | 72° | 0.05" | — |
| 2012 | 85° | 59° | 72° | 0.08" | — |
| 2011warmest | 98° | 62° | 80° | 0.08" | — |
| 2010 | 85° | 69° | 77° | 0.08" | — |
| 2009 | 92° | 61° | 76° | — | — |
| 2008 | 79° | 54° | 66° | 0.08" | — |
| 2007 | 80° | 54° | 67° | 0.18" | — |
| 2006 | 94° | 59° | 76° | — | — |
| 2005 | 82° | 52° | 67° | 0.03" | — |
| 2004 | 85° | 51° | 68° | — | — |
| 2003 | 91° | 58° | 74° | — | — |
| 2002 | 82° | 42° | 62° | — | — |
| 2001 | 89° | 50° | 70° | — | — |
| 2000 | 90° | 48° | 69° | — | — |
| 1999 | 88° | 47° | 67° | — | — |
| 1998 | 92° | 52° | 72° | — | — |
| 1997 | 87° | 49° | 68° | 0.03" | — |
| 1996 | 80° | 52° | 66° | — | — |
| 1995 | 94° | 59° | 76° | — | — |
| 1994 | 97° | 53° | 75° | 0.1" | — |
| 1993 | 88° | 46° | 67° | — | — |
| 1992 | 101° | 54° | 77° | 0.66" | — |
| 1991 | 90° | 52° | 71° | — | — |
| 1990 | 84° | 42° | 63° | — | — |
| 1989 | 80° | 48° | 64° | — | — |
| 1988 | 85° | 52° | 68° | — | — |
| 1987coldest | 58° | 52° | 55° | 0.71" | — |
| 1986 | 81° | 55° | 68° | — | — |
| 1985 | 81° | 55° | 68° | — | — |
| 1984 | 77° | 53° | 65° | — | — |
| 1983 | 83° | 58° | 70° | — | — |
| 1982 | 86° | 59° | 73° | 0.08" | — |
| 1981 | 95° | 52° | 73° | 0.13" | — |
| 1980 | 79° | 54° | 66° | 0.81" | — |
| 1979 | 79° | 52° | 65° | — | — |
| 1978 | 90° | 55° | 72° | — | — |
| 1977 | 88° | 55° | 71° | — | — |
| 1976 | 91° | 54° | 72° | — | — |
| 1975 | 88° | 51° | 69° | — | — |
| 1974 | 87° | 53° | 70° | — | — |
| 1973 | 90° | 54° | 72° | — | — |
| 1972 | 84° | 46° | 65° | — | — |
| 1971 | 95° | 53° | 74° | — | — |
55 years of data from LONGMONT 2 ESE