Weather on October 20
Arvada, CO
55 Years of Data
Avg High
65°F
Avg Low
35°F
Warmest
1974
64°F avg
Coldest
1987
30°F avg
About This Date
October 20th in Arvada, CO typically brings mild fall weather, with average highs around 65°F and lows near 35°F — a 30°F daily swing. Over 55 years of records, the warmest October 20th was in 1974 (64°F average), while the coldest was 1987 (30°F) — a 34°F range across recorded history. Precipitation has occurred on 9% of recorded October 20th dates, with snow falling 2% of the time (heaviest snowfall: 2"). 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 October 20th in Arvada, CO? Great weather for outdoor activities.
Warming Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 82° | 33° | 58° | — | — |
| 2024 | 61° | 41° | 51° | — | — |
| 2023 | 79° | 49° | 64° | — | — |
| 2022 | 73° | 45° | 59° | — | — |
| 2021 | 56° | 21° | 38° | — | — |
| 2020 | 72° | 33° | 52° | — | — |
| 2019 | 65° | 32° | 48° | — | — |
| 2018 | 65° | 40° | 52° | — | — |
| 2017 | 77° | 45° | 61° | — | — |
| 2016 | 58° | 26° | 42° | — | — |
| 2015 | 73° | 48° | 61° | — | — |
| 2014 | 75° | 48° | 62° | — | — |
| 2013 | 66° | 34° | 50° | — | — |
| 2012 | 74° | 44° | 59° | — | — |
| 2011 | 61° | 39° | 50° | — | — |
| 2010 | 61° | 36° | 48° | — | — |
| 2009 | 57° | 29° | 43° | — | — |
| 2008 | 55° | 33° | 44° | — | — |
| 2007 | 65° | 28° | 46° | — | — |
| 2006 | 51° | 28° | 40° | — | — |
| 2005 | 58° | 32° | 45° | — | — |
| 2004 | 62° | 35° | 49° | — | — |
| 2003 | 72° | 46° | 59° | — | — |
| 2002 | 61° | 33° | 47° | — | — |
| 2001 | 71° | 36° | 53° | — | — |
| 2000 | 76° | 39° | 57° | — | — |
| 1999 | 56° | 30° | 43° | — | — |
| 1998 | 61° | 35° | 48° | — | — |
| 1997 | 51° | 29° | 40° | — | — |
| 1996 | 75° | 35° | 55° | — | — |
| 1995 | 55° | 30° | 43° | — | — |
| 1994 | 63° | 35° | 49° | — | — |
| 1993 | 60° | 28° | 44° | 0.58" | — |
| 1992 | 75° | 50° | 63° | — | — |
| 1991 | 67° | 32° | 49° | — | — |
| 1990 | 77° | 29° | 53° | 1.22" | 2" |
| 1989 | 63° | 27° | 45° | — | — |
| 1988 | 62° | 34° | 48° | 0.05" | — |
| 1987coldest | 40° | 20° | 30° | — | — |
| 1986 | 59° | 38° | 48° | 0.13" | — |
| 1985 | 65° | 37° | 51° | — | — |
| 1984 | 42° | 21° | 32° | — | — |
| 1983 | 59° | 31° | 45° | — | — |
| 1982 | 43° | 25° | 34° | — | — |
| 1981 | 72° | 41° | 56° | — | — |
| 1980 | 66° | 37° | 52° | — | — |
| 1979 | 64° | 32° | 48° | 1.65" | — |
| 1978 | 75° | 49° | 62° | — | — |
| 1977 | 78° | 42° | 60° | — | — |
| 1976 | 58° | 26° | 42° | — | — |
| 1975 | 82° | 43° | 62° | — | — |
| 1974warmest | 80° | 49° | 64° | — | — |
| 1973 | 76° | 44° | 60° | — | — |
| 1972 | 64° | 34° | 49° | — | — |
| 1971 | 65° | 34° | 49° | — | — |
55 years of data from WATERTON NORTH COLORADO