Weather on October 21
Alamosa, CO
55 Years of Data
Avg High
61°F
Avg Low
22°F
Warmest
2010
55°F avg
Coldest
1996
15°F avg
About This Date
October 21st in Alamosa, CO typically brings mild fall weather, with average highs around 61°F and lows near 22°F — a 39°F daily swing. Over 55 years of records, the warmest October 21st was in 2010 (55°F average), while the coldest was 1996 (15°F) — a 40°F range across recorded history. Precipitation has occurred on 16% of recorded October 21st dates, with snow falling 5% of the time (heaviest snowfall: 3.5"). The last decade has been 3.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.6°F warmer on this date compared to 20-30 years ago.
Planning for October 21st in Alamosa, CO? Great weather for outdoor activities.
Warming Trend
1.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 72° | 27° | 49° | — | — |
| 2024 | 53° | 28° | 41° | 0.69" | — |
| 2023 | 77° | 25° | 51° | — | — |
| 2022 | 69° | 23° | 46° | — | — |
| 2021 | 61° | 17° | 39° | — | — |
| 2020 | 74° | 25° | 49° | — | — |
| 2019 | 50° | 13° | 31° | — | — |
| 2018 | 63° | 20° | 41° | — | — |
| 2017 | 66° | 36° | 51° | — | — |
| 2016 | 62° | 17° | 40° | — | — |
| 2015 | 63° | 32° | 47° | 0.05" | — |
| 2014 | 69° | 31° | 50° | — | — |
| 2013 | 59° | 22° | 40° | — | — |
| 2012 | 73° | 22° | 47° | — | — |
| 2011 | 67° | 19° | 43° | — | — |
| 2010warmest | 69° | 41° | 55° | 0.61" | — |
| 2009 | 66° | 30° | 48° | 1.07" | 1.3" |
| 2008 | 67° | 18° | 42° | — | — |
| 2007 | 69° | 23° | 46° | — | — |
| 2006 | 57° | 19° | 38° | — | — |
| 2005 | 63° | 25° | 44° | — | — |
| 2004 | 61° | 33° | 47° | 0.13" | — |
| 2003 | 76° | 21° | 48° | — | — |
| 2002 | 60° | 26° | 43° | — | — |
| 2001 | 63° | 21° | 42° | — | — |
| 2000 | 62° | 21° | 42° | — | — |
| 1999 | 66° | 15° | 41° | — | — |
| 1998 | 49° | 29° | 39° | — | — |
| 1997 | 60° | 21° | 41° | — | — |
| 1996coldest | 26° | 3° | 15° | 0.38" | 3.5" |
| 1995 | 67° | 14° | 40° | — | — |
| 1994 | 56° | 20° | 38° | — | — |
| 1993 | 61° | 14° | 37° | — | — |
| 1992 | 65° | 27° | 46° | — | — |
| 1991 | 68° | 30° | 49° | — | — |
| 1990 | 45° | 19° | 32° | — | — |
| 1989 | 63° | 16° | 39° | — | — |
| 1988 | 71° | 21° | 46° | — | — |
| 1987 | 64° | 9° | 36° | — | — |
| 1986 | 47° | 28° | 37° | — | — |
| 1985 | 61° | 24° | 42° | — | — |
| 1984 | 41° | 16° | 28° | — | — |
| 1983 | 65° | 17° | 41° | — | — |
| 1982 | 60° | 16° | 38° | — | — |
| 1981 | 58° | 17° | 37° | — | — |
| 1980 | 59° | 12° | 36° | — | — |
| 1979 | 49° | 20° | 34° | 0.43" | 0.9" |
| 1978 | 58° | 41° | 49° | 0.69" | — |
| 1977 | 60° | 30° | 45° | — | — |
| 1976 | 56° | 10° | 33° | — | — |
| 1975 | 69° | 25° | 47° | — | — |
| 1974 | 60° | 31° | 45° | 0.05" | — |
| 1973 | 67° | 22° | 44° | — | — |
| 1972 | 51° | 24° | 38° | — | — |
| 1971 | 60° | 17° | 39° | — | — |
55 years of data from ALAMOSA 1E