Weather on August 25
Longmont, CO
55 Years of Data
Avg High
87°F
Avg Low
54°F
Warmest
2020
79°F avg
Coldest
1972
53°F avg
About This Date
August 25th in Longmont, CO typically brings warm summer weather, with average highs around 87°F and lows near 54°F — a 33°F daily swing. Over 55 years of records, the warmest August 25th was in 2020 (79°F average), while the coldest was 1972 (53°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 22% of August 25th dates historically, with the wettest August 25th recording 2.26" of rain. The last decade has been 1.1°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.1°F cooler on this date compared to 20-30 years ago.
Planning for August 25th 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 | 71° | 57° | 64° | 0.13" | — |
| 2024 | 88° | 61° | 74° | 0.15" | — |
| 2023 | 90° | 64° | 77° | 0.03" | — |
| 2022 | 87° | 55° | 71° | — | — |
| 2021 | 94° | 55° | 74° | — | — |
| 2020warmest | 95° | 62° | 79° | — | — |
| 2019 | 87° | 56° | 71° | — | — |
| 2018 | 88° | 55° | 71° | — | — |
| 2017 | 86° | 52° | 69° | — | — |
| 2016 | 71° | 46° | 59° | 0.51" | — |
| 2015 | 94° | 54° | 74° | — | — |
| 2014 | 82° | 51° | 67° | 0.18" | — |
| 2013 | 88° | 59° | 73° | 0.2" | — |
| 2012 | 80° | 57° | 69° | — | — |
| 2011 | 96° | 57° | 77° | — | — |
| 2010 | 89° | 51° | 70° | — | — |
| 2009 | 76° | 55° | 65° | — | — |
| 2008 | 86° | 53° | 70° | — | — |
| 2007 | 85° | 50° | 67° | — | — |
| 2006 | 80° | 62° | 71° | — | — |
| 2005 | 85° | 56° | 70° | 0.05" | — |
| 2004 | 84° | 54° | 69° | — | — |
| 2003 | 89° | 63° | 76° | — | — |
| 2002 | 85° | 55° | 70° | — | — |
| 2001 | 96° | 44° | 70° | — | — |
| 2000 | 95° | 53° | 74° | — | — |
| 1999 | 96° | 50° | 73° | — | — |
| 1998 | 95° | 53° | 74° | — | — |
| 1997 | 94° | 50° | 72° | — | — |
| 1996 | 89° | 55° | 72° | — | — |
| 1995 | 94° | 59° | 76° | 0.18" | — |
| 1994 | 97° | 56° | 76° | — | — |
| 1993 | 95° | 54° | 74° | — | — |
| 1992 | — | 48° | — | 2.26" | — |
| 1991 | 95° | 55° | 75° | — | — |
| 1990 | 89° | 42° | 66° | — | — |
| 1989 | 92° | 49° | 70° | — | — |
| 1988 | 93° | 55° | 74° | — | — |
| 1987 | 70° | 54° | 62° | 0.05" | — |
| 1986 | 89° | 56° | 72° | — | — |
| 1985 | 90° | 51° | 70° | — | — |
| 1984 | 79° | 48° | 63° | — | — |
| 1983 | 87° | 57° | 72° | — | — |
| 1982 | 76° | 54° | 65° | — | — |
| 1981 | 91° | 51° | 71° | 0.08" | — |
| 1980 | 86° | 53° | 70° | — | — |
| 1979 | 79° | 51° | 65° | — | — |
| 1978 | 91° | 58° | 74° | — | — |
| 1977 | 91° | 58° | 74° | — | — |
| 1976 | 83° | 53° | 68° | — | — |
| 1975 | 90° | 44° | 67° | — | — |
| 1974 | 89° | 50° | 70° | — | — |
| 1973 | 94° | 53° | 73° | — | — |
| 1972coldest | 64° | 42° | 53° | 0.89" | — |
| 1971 | 81° | 53° | 67° | — | — |
55 years of data from LONGMONT 2 ESE