Weather on May 20
Arvada, CO
55 Years of Data
Avg High
69°F
Avg Low
43°F
Warmest
2020
73°F avg
Coldest
2017
35°F avg
About This Date
May 20th in Arvada, CO typically brings mild spring weather, with average highs around 69°F and lows near 43°F — a 26°F daily swing. Over 55 years of records, the warmest May 20th was in 2020 (73°F average), while the coldest was 2017 (35°F) — a 38°F range across recorded history. Rain or other precipitation has occurred on about 31% of May 20th dates historically, with the wettest May 20th recording 6.1" of rain. The last decade has been 2.1°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.1°F cooler on this date compared to 20-30 years ago.
Planning for May 20th in Arvada, CO? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Cooling Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 63° | 39° | 51° | — | — |
| 2024 | 79° | 43° | 61° | — | — |
| 2023 | 55° | 44° | 50° | 0.1" | — |
| 2022 | 89° | 38° | 63° | 0.05" | — |
| 2021 | 72° | 46° | 59° | — | — |
| 2020warmest | 92° | 55° | 73° | 0.13" | — |
| 2019 | 55° | 37° | 46° | 0.05" | — |
| 2018 | 49° | 43° | 46° | 0.71" | — |
| 2017coldest | 41° | 29° | 35° | — | — |
| 2016 | 74° | 48° | 61° | — | — |
| 2015 | 48° | 38° | 43° | 0.33" | — |
| 2014 | 82° | 50° | 66° | — | — |
| 2013 | 69° | 45° | 57° | — | — |
| 2012 | 56° | 39° | 47° | 0.99" | — |
| 2011 | 54° | 26° | 40° | — | — |
| 2010 | 61° | 37° | 49° | — | — |
| 2009 | 70° | 47° | 58° | — | — |
| 2008 | 70° | 41° | 55° | — | — |
| 2007 | 69° | 43° | 56° | — | — |
| 2006 | 71° | 49° | 60° | — | — |
| 2005 | 79° | 51° | 65° | — | — |
| 2004 | 65° | 43° | 54° | — | — |
| 2003 | 54° | 27° | 40° | — | — |
| 2002 | 70° | 45° | 57° | — | — |
| 2001 | 64° | 49° | 56° | 0.2" | — |
| 2000 | 68° | 23° | 46° | — | — |
| 1999 | 84° | 51° | 68° | — | — |
| 1998 | 83° | 50° | 66° | — | — |
| 1997 | 68° | 39° | 54° | — | — |
| 1996 | 80° | 40° | 60° | — | — |
| 1995 | 70° | 43° | 56° | — | — |
| 1994 | 84° | 52° | 68° | 0.76" | — |
| 1993 | 68° | 42° | 55° | 0.25" | — |
| 1992 | 87° | 52° | 69° | — | — |
| 1991 | 86° | 55° | 71° | — | — |
| 1990 | 76° | 42° | 59° | — | — |
| 1989 | 72° | 40° | 56° | — | — |
| 1988 | 49° | 38° | 43° | 6.1" | — |
| 1987 | 70° | 46° | 58° | 0.3" | — |
| 1986 | 74° | 45° | 59° | — | — |
| 1985 | 69° | 44° | 57° | — | — |
| 1984 | 75° | 47° | 61° | — | — |
| 1983 | 52° | 37° | 44° | 1.09" | — |
| 1982 | 77° | 43° | 60° | — | — |
| 1981 | 61° | 42° | 51° | — | — |
| 1980 | 70° | 46° | 58° | — | — |
| 1979 | 49° | 39° | 44° | 0.84" | — |
| 1978 | 71° | 40° | 55° | — | — |
| 1977 | 55° | 35° | 45° | 0.36" | — |
| 1976 | 75° | 51° | 63° | — | — |
| 1975 | 70° | 44° | 57° | — | — |
| 1974 | 77° | 52° | 64° | — | — |
| 1973 | 81° | 53° | 67° | 0.71" | — |
| 1972 | 81° | 44° | 62° | 0.36" | — |
| 1971 | 70° | 41° | 55° | — | — |
55 years of data from WATERTON NORTH COLORADO