Weather on May 19
Boulder, CO
55 Years of Data
Avg High
72°F
Avg Low
46°F
Warmest
2006
74°F avg
Coldest
2017
37°F avg
About This Date
May 19th in Boulder, CO typically brings pleasant spring weather, with average highs around 72°F and lows near 46°F — a 26°F daily swing. Over 55 years of records, the warmest May 19th was in 2006 (74°F average), while the coldest was 2017 (37°F) — a 37°F range across recorded history. Precipitation has occurred on 31% of recorded May 19th dates, with snow falling 2% of the time. The last decade has been 4.9°F cooler on this date compared to 20-30 years ago.
The last decade has been 4.9°F cooler on this date compared to 20-30 years ago.
Planning for May 19th in Boulder, CO? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Cooling Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 64° | 50° | 57° | — | — |
| 2024 | 81° | 55° | 68° | — | — |
| 2023 | 55° | 48° | 52° | — | — |
| 2022 | 86° | 41° | 64° | — | — |
| 2021 | 71° | 42° | 57° | — | — |
| 2020 | 88° | 54° | 71° | — | — |
| 2019 | 48° | 36° | 42° | — | — |
| 2018 | 52° | 43° | 47° | — | — |
| 2017coldest | 43° | 32° | 37° | 0.71" | 0.8" |
| 2016 | 74° | 40° | 57° | — | — |
| 2015 | 46° | 42° | 44° | 3.43" | — |
| 2014 | 81° | 47° | 64° | — | — |
| 2013 | 72° | 47° | 59° | — | — |
| 2012 | 72° | 46° | 59° | 0.36" | — |
| 2011 | 43° | 38° | 40° | 3.17" | — |
| 2010 | 67° | 39° | 53° | 0.51" | — |
| 2009 | 84° | 60° | 72° | — | — |
| 2008 | 82° | 55° | 69° | — | — |
| 2007 | 80° | 45° | 62° | — | — |
| 2006warmest | 90° | 58° | 74° | — | — |
| 2005 | 83° | 50° | 66° | — | — |
| 2004 | 80° | 47° | 63° | — | — |
| 2003 | 69° | 38° | 53° | 0.23" | — |
| 2002 | 69° | 43° | 56° | — | — |
| 2001 | 76° | 51° | 63° | — | — |
| 2000 | 67° | 47° | 57° | 0.05" | — |
| 1999 | 80° | 46° | 63° | — | — |
| 1998 | 79° | 47° | 63° | — | — |
| 1997 | 65° | 40° | 52° | 0.05" | — |
| 1996 | 86° | 44° | 65° | — | — |
| 1995 | 70° | 42° | 56° | 0.13" | — |
| 1994 | 84° | 49° | 66° | — | — |
| 1993 | 68° | 45° | 56° | 0.23" | — |
| 1992 | 86° | 49° | 67° | — | — |
| 1991 | 84° | 50° | 67° | — | — |
| 1990 | 74° | 44° | 59° | — | — |
| 1989 | 76° | 48° | 62° | — | — |
| 1988 | 53° | 42° | 48° | 4.72" | — |
| 1987 | 73° | 48° | 61° | 0.23" | — |
| 1986 | 76° | 46° | 61° | — | — |
| 1985 | 72° | 42° | 57° | — | — |
| 1984 | 74° | 46° | 60° | — | — |
| 1983 | 48° | 41° | 45° | 0.71" | — |
| 1982 | 74° | 50° | 62° | — | — |
| 1981 | 56° | 39° | 47° | 0.2" | — |
| 1980 | 72° | 39° | 55° | — | — |
| 1979 | 80° | 53° | 67° | — | — |
| 1978 | 75° | 41° | 58° | — | — |
| 1977 | 75° | 44° | 60° | 0.05" | — |
| 1976 | 79° | 66° | 72° | — | — |
| 1975 | 79° | 55° | 67° | — | — |
| 1974 | 85° | 48° | 66° | — | — |
| 1973 | 83° | 56° | 69° | — | — |
| 1972 | 75° | 48° | 62° | 0.28" | — |
| 1971 | 60° | 34° | 47° | 0.3" | — |
55 years of data from BOULDER MUNI AP