Weather on August 29
Longmont, CO
55 Years of Data
Avg High
86°F
Avg Low
52°F
Warmest
2010
79°F avg
Coldest
1977
58°F avg
About This Date
August 29th in Longmont, CO typically brings warm summer weather, with average highs around 86°F and lows near 52°F — a 34°F daily swing. Over 55 years of records, the warmest August 29th was in 2010 (79°F average), while the coldest was 1977 (58°F) — a 21°F range across recorded history. Rain or other precipitation has occurred on about 16% of August 29th dates historically, with the wettest August 29th recording 0.66" of rain. The last decade has been 2.9°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.9°F warmer on this date compared to 20-30 years ago.
Planning for August 29th in Longmont, 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 | 80° | 56° | 68° | — | — |
| 2024 | 93° | 55° | 74° | — | — |
| 2023 | 80° | 52° | 66° | 0.3" | — |
| 2022 | 93° | 54° | 73° | — | — |
| 2021 | 88° | 58° | 73° | — | — |
| 2020 | 78° | 55° | 67° | 0.28" | — |
| 2019 | 92° | 51° | 71° | — | — |
| 2018 | 74° | 51° | 62° | — | — |
| 2017 | 90° | 54° | 72° | — | — |
| 2016 | 84° | 61° | 72° | — | — |
| 2015 | 91° | 54° | 72° | — | — |
| 2014 | 81° | 50° | 65° | 0.53" | — |
| 2013 | 94° | 63° | 78° | — | — |
| 2012 | 95° | 60° | 78° | — | — |
| 2011 | 87° | 57° | 72° | — | — |
| 2010warmest | 91° | 67° | 79° | — | — |
| 2009 | 81° | 50° | 65° | — | — |
| 2008 | 82° | 50° | 66° | — | — |
| 2007 | 82° | 53° | 68° | — | — |
| 2006 | 83° | 46° | 64° | — | — |
| 2005 | 90° | 53° | 71° | — | — |
| 2004 | 75° | 45° | 60° | — | — |
| 2003 | 85° | 53° | 69° | — | — |
| 2002 | 79° | 49° | 64° | — | — |
| 2001 | 93° | 45° | 69° | — | — |
| 2000 | 93° | 54° | 73° | 0.33" | — |
| 1999 | 76° | 48° | 62° | 0.43" | — |
| 1998 | 90° | 44° | 67° | — | — |
| 1997 | 92° | 53° | 72° | — | — |
| 1996 | 77° | 47° | 62° | 0.05" | — |
| 1995 | 95° | 58° | 76° | — | — |
| 1994 | 80° | 54° | 67° | 0.66" | — |
| 1993 | 86° | 48° | 67° | — | — |
| 1992 | — | 43° | — | — | — |
| 1991 | 91° | 56° | 73° | 0.46" | — |
| 1990 | 93° | 52° | 72° | — | — |
| 1989 | 89° | 50° | 70° | — | — |
| 1988 | 76° | 47° | 61° | — | — |
| 1987 | 81° | 45° | 63° | — | — |
| 1986 | 83° | 53° | 68° | — | — |
| 1985 | 91° | 58° | 74° | — | — |
| 1984 | 95° | 52° | 73° | — | — |
| 1983 | 90° | 56° | 73° | — | — |
| 1982 | 90° | 53° | 71° | — | — |
| 1981 | 86° | 51° | 69° | 0.08" | — |
| 1980 | 90° | 57° | 73° | — | — |
| 1979 | 77° | 51° | 64° | — | — |
| 1978 | 76° | 54° | 65° | — | — |
| 1977coldest | 72° | 45° | 58° | — | — |
| 1976 | 87° | 45° | 66° | — | — |
| 1975 | 92° | 49° | 70° | — | — |
| 1974 | 84° | 54° | 69° | — | — |
| 1973 | 85° | 50° | 67° | — | — |
| 1972 | 82° | 55° | 69° | — | — |
| 1971 | 89° | 60° | 75° | — | — |
55 years of data from LONGMONT 2 ESE