Weather on May 18
Denver, CO
55 Years of Data
Avg High
76°F
Avg Low
45°F
Warmest
1998
72°F avg
Coldest
1981
43°F avg
About This Date
May 18th in Denver, CO typically brings pleasant spring weather, with average highs around 76°F and lows near 45°F — a 31°F daily swing. Over 55 years of records, the warmest May 18th was in 1998 (72°F average), while the coldest was 1981 (43°F) — a 29°F range across recorded history. Precipitation has occurred on 31% of recorded May 18th dates, with snow falling 2% of the time. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for May 18th in Denver, CO? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 71° | 44° | 58° | — | — |
| 2024 | 88° | 51° | 69° | — | — |
| 2023 | 81° | 48° | 64° | 0.28" | — |
| 2022 | 89° | 52° | 70° | — | — |
| 2021 | 66° | — | — | 1.7" | — |
| 2020 | 86° | 54° | 70° | — | — |
| 2019 | 75° | 40° | 57° | 0.13" | — |
| 2018 | 89° | 55° | 72° | — | — |
| 2017 | 76° | 34° | 55° | 3.1" | — |
| 2016 | 50° | 39° | 45° | 0.08" | — |
| 2015 | 65° | 42° | 53° | 0.03" | — |
| 2014 | 70° | 44° | 57° | — | — |
| 2013 | 87° | 51° | 69° | — | — |
| 2012 | 81° | 48° | 64° | — | — |
| 2011 | 59° | 39° | 49° | — | — |
| 2010 | 76° | 50° | 63° | — | — |
| 2009 | 85° | 50° | 67° | — | — |
| 2008 | 82° | 47° | 64° | — | — |
| 2007 | 76° | 45° | 60° | — | — |
| 2006 | 87° | 51° | 69° | — | — |
| 2005 | 77° | 44° | 61° | — | — |
| 2004 | 81° | 48° | 64° | — | — |
| 2003 | 78° | 50° | 64° | — | — |
| 2002 | 78° | 42° | 60° | — | — |
| 2001 | 79° | 45° | 62° | 0.08" | — |
| 2000 | 53° | 40° | 46° | 0.38" | — |
| 1999 | 77° | 37° | 57° | — | — |
| 1998warmest | 87° | 58° | 72° | — | — |
| 1997 | 79° | 42° | 60° | — | — |
| 1996 | 91° | 50° | 71° | — | — |
| 1995 | 66° | 33° | 50° | 0.03" | — |
| 1994 | 84° | 58° | 71° | — | — |
| 1993 | 74° | 43° | 58° | — | — |
| 1992 | 87° | 43° | 65° | — | — |
| 1991 | 77° | 52° | 64° | — | — |
| 1990 | 84° | 43° | 63° | — | — |
| 1989 | 75° | 51° | 63° | — | — |
| 1988 | 75° | 51° | 63° | 2.18" | — |
| 1987 | 79° | 45° | 62° | 0.05" | — |
| 1986 | 68° | 38° | 53° | — | — |
| 1985 | 69° | 42° | 56° | 0.05" | — |
| 1984 | 75° | 44° | 60° | — | — |
| 1983 | 62° | 30° | 46° | 1.57" | 1" |
| 1982 | 78° | 43° | 60° | 2.67" | — |
| 1981coldest | 46° | 40° | 43° | 0.99" | — |
| 1980 | 61° | 41° | 51° | — | — |
| 1979 | 79° | 51° | 65° | — | — |
| 1978 | 66° | 38° | 52° | 2.82" | — |
| 1977 | 81° | 40° | 60° | — | — |
| 1976 | 87° | 41° | 64° | — | — |
| 1975 | 77° | 47° | 62° | — | — |
| 1974 | 85° | 53° | 69° | — | — |
| 1973 | 83° | 47° | 65° | — | — |
| 1972 | 81° | 52° | 66° | — | — |
| 1971 | 56° | 34° | 45° | 0.58" | — |
55 years of data from NORTHGLENN