Weather on August 19
Boulder, CO
55 Years of Data
Avg High
84°F
Avg Low
56°F
Warmest
2023
81°F avg
Coldest
2004
56°F avg
About This Date
August 19th in Boulder, CO typically brings warm summer weather, with average highs around 84°F and lows near 56°F — a 28°F daily swing. Over 55 years of records, the warmest August 19th was in 2023 (81°F average), while the coldest was 2004 (56°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 29% of August 19th dates historically, with the wettest August 19th recording 3.61" of rain. The last decade has been 5.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.0°F warmer on this date compared to 20-30 years ago.
Planning for August 19th in Boulder, 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 | 91° | 59° | 75° | — | — |
| 2024 | 88° | 64° | 76° | — | — |
| 2023warmest | 95° | 66° | 81° | — | — |
| 2022 | 82° | 59° | 71° | — | — |
| 2021 | 75° | 59° | 67° | 1.07" | — |
| 2020 | 90° | 68° | 79° | — | — |
| 2019 | 97° | 63° | 80° | — | — |
| 2018 | 73° | 54° | 63° | — | — |
| 2017 | 94° | 55° | 74° | — | — |
| 2016 | 81° | 51° | 66° | 0.71" | — |
| 2015 | 70° | 44° | 57° | 0.46" | — |
| 2014 | 86° | 55° | 71° | 0.05" | — |
| 2013 | 96° | 56° | 76° | — | — |
| 2012 | 82° | 47° | 64° | — | — |
| 2011 | 94° | 62° | 78° | 0.23" | — |
| 2010 | 85° | 66° | 75° | — | — |
| 2009 | 84° | 58° | 71° | — | — |
| 2008 | 83° | 52° | 67° | — | — |
| 2007 | 90° | 59° | 74° | 0.13" | — |
| 2006 | 76° | 58° | 67° | 0.79" | — |
| 2005 | 84° | 51° | 68° | — | — |
| 2004coldest | 60° | 51° | 56° | 3.61" | — |
| 2003 | 84° | 53° | 69° | — | — |
| 2002 | 88° | 51° | 69° | — | — |
| 2001 | 94° | 62° | 78° | — | — |
| 2000 | 88° | 58° | 73° | — | — |
| 1999 | 82° | 53° | 68° | — | — |
| 1998 | 86° | 56° | 71° | — | — |
| 1997 | 77° | 55° | 66° | — | — |
| 1996 | 73° | 56° | 64° | 0.23" | — |
| 1995 | 84° | 56° | 70° | 1.88" | — |
| 1994 | 80° | 59° | 70° | 0.13" | — |
| 1993 | 85° | 52° | 68° | — | — |
| 1992 | 86° | 52° | 69° | — | — |
| 1991 | 76° | 56° | 66° | — | — |
| 1990 | 80° | 53° | 67° | — | — |
| 1989 | 88° | 51° | 69° | — | — |
| 1988 | 89° | 55° | 72° | — | — |
| 1987 | 94° | 51° | 72° | — | — |
| 1986 | 89° | 59° | 74° | 0.03" | — |
| 1985 | 85° | 50° | 67° | — | — |
| 1984 | 84° | 59° | 72° | — | — |
| 1983 | 88° | 59° | 73° | — | — |
| 1982 | 89° | 67° | 78° | — | — |
| 1981 | 86° | 55° | 71° | — | — |
| 1980 | 88° | 58° | 73° | — | — |
| 1979 | 71° | 51° | 61° | 0.1" | — |
| 1978 | 83° | 45° | 64° | — | — |
| 1977 | 71° | 56° | 63° | 0.61" | — |
| 1976 | 85° | 56° | 70° | 0.28" | — |
| 1975 | 88° | 56° | 72° | — | — |
| 1974 | 90° | 61° | 75° | — | — |
| 1973 | 91° | 58° | 74° | — | — |
| 1972 | 87° | 57° | 72° | 0.05" | — |
| 1971 | 81° | 60° | 70° | — | — |
55 years of data from BOULDER MUNI AP