Weather on October 21
Flagstaff, AZ
55 Years of Data
About This Date
October 21st in Flagstaff, AZ typically brings mild fall weather, with average highs around 61°F and lows near 29°F — a 32°F daily swing. Over 55 years of records, the warmest October 21st was in 2003 (54°F average), while the coldest was 1996 (29°F) — a 25°F range across recorded history. Precipitation has occurred on 24% of recorded October 21st dates, with snow falling 5% of the time (heaviest snowfall: 5.5"). The last decade has been 4.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.5°F warmer on this date compared to 20-30 years ago.
Planning for October 21st in Flagstaff, AZ? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 74° | 29° | 51° | — | — |
| 2024 | 64° | 29° | 47° | — | — |
| 2023 | 74° | 35° | 54° | — | — |
| 2022 | 65° | 34° | 49° | — | — |
| 2021 | 65° | 24° | 45° | — | — |
| 2020 | 70° | 30° | 50° | — | — |
| 2019 | 66° | 21° | 44° | — | — |
| 2018 | 64° | 36° | 50° | — | — |
| 2017 | 63° | 27° | 45° | — | — |
| 2016 | 73° | 27° | 50° | — | — |
| 2015 | 53° | 34° | 43° | 0.3" | — |
| 2014 | 65° | 33° | 49° | — | — |
| 2013 | 62° | 24° | 43° | — | — |
| 2012 | 62° | 36° | 49° | — | — |
| 2011 | 67° | 28° | 47° | — | — |
| 2010 | 52° | 33° | 42° | 0.1" | — |
| 2009 | 62° | 29° | 45° | — | — |
| 2008 | 70° | 27° | 48° | — | — |
| 2007 | 47° | 29° | 38° | — | — |
| 2006 | 55° | 27° | 41° | — | — |
| 2005 | 61° | 32° | 46° | — | — |
| 2004 | 51° | 32° | 42° | 0.94" | 5.5" |
| 2003warmest | 75° | 32° | 54° | — | — |
| 2002 | 60° | 30° | 45° | — | — |
| 2001 | 65° | 36° | 50° | — | — |
| 2000 | 59° | 32° | 46° | 0.53" | — |
| 1999 | 68° | 17° | 43° | — | — |
| 1998 | 47° | 39° | 43° | 0.7" | — |
| 1997 | 59° | 24° | 42° | 0.01" | — |
| 1996coldest | 39° | 19° | 29° | — | — |
| 1995 | 68° | 31° | 49° | — | — |
| 1994 | 64° | 24° | 44° | — | — |
| 1993 | 64° | 24° | 44° | — | — |
| 1992 | 65° | 35° | 50° | — | — |
| 1991 | 67° | 34° | 50° | 0.03" | — |
| 1990 | 50° | 26° | 38° | — | — |
| 1989 | 55° | 37° | 46° | 0.26" | — |
| 1988 | 74° | 32° | 53° | — | — |
| 1987 | 67° | 27° | 47° | — | — |
| 1986 | 58° | 20° | 39° | — | — |
| 1985 | 57° | 35° | 46° | — | — |
| 1984 | 44° | 24° | 34° | 0.07" | 0.6" |
| 1983 | 67° | 26° | 46° | — | — |
| 1982 | 67° | 24° | 45° | — | — |
| 1981 | 64° | 31° | 47° | — | — |
| 1980 | 62° | 26° | 44° | — | — |
| 1979 | 48° | 24° | 36° | 0.1" | 0.2" |
| 1978 | 50° | 34° | 42° | 0.33" | — |
| 1977 | 64° | 25° | 44° | — | — |
| 1976 | 47° | 28° | 37° | 0.11" | — |
| 1975 | 69° | 32° | 51° | — | — |
| 1974 | 64° | 34° | 49° | 0.1" | — |
| 1973 | 69° | 31° | 50° | — | — |
| 1972 | 53° | 29° | 41° | — | — |
| 1971 | 57° | 25° | 41° | — | — |
Flagstaff, AZ Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Flagstaff, AZ Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Flagstaff, AZ Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Flagstaff, AZ
Most pleasant months in Flagstaff, AZ: May, June, July, August, September.