Weather on March 21
Glendale, AZ
55 Years of Data
Avg High
80°F
Avg Low
51°F
Warmest
2004
79°F avg
Coldest
1979
51°F avg
About This Date
March 21st in Glendale, AZ typically brings warm spring weather, with average highs around 80°F and lows near 51°F — a 29°F daily swing. Over 55 years of records, the warmest March 21st was in 2004 (79°F average), while the coldest was 1979 (51°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 15% of March 21st dates historically, with the wettest March 21st recording 1.55" of rain. The last decade has been 2.4°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.4°F cooler on this date compared to 20-30 years ago.
Planning for March 21st in Glendale, AZ? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 81° | 49° | 65° | — | — |
| 2024 | 85° | 52° | 68° | — | — |
| 2023 | 62° | 56° | 59° | 1.09" | — |
| 2022 | 78° | 48° | 63° | — | — |
| 2021 | 77° | 48° | 63° | — | — |
| 2020 | 71° | 46° | 59° | — | — |
| 2019 | 79° | 51° | 65° | — | — |
| 2018 | 80° | 42° | 61° | — | — |
| 2017 | 94° | 62° | 78° | — | — |
| 2016 | 91° | 57° | 74° | — | — |
| 2015 | 84° | 58° | 71° | — | — |
| 2014 | 82° | 49° | 65° | — | — |
| 2013 | 84° | 59° | 72° | — | — |
| 2012 | 75° | 44° | 60° | — | — |
| 2011 | 75° | 51° | 63° | 0.28" | — |
| 2010 | 77° | 47° | 62° | — | — |
| 2009 | 88° | 57° | 72° | — | — |
| 2008 | 85° | 51° | 68° | — | — |
| 2007 | 79° | 61° | 70° | — | — |
| 2006 | 64° | 45° | 54° | 0.18" | — |
| 2005 | 74° | 45° | 59° | — | — |
| 2004warmest | 97° | 62° | 79° | — | — |
| 2003 | 76° | 49° | 62° | — | — |
| 2002 | 91° | 51° | 71° | — | — |
| 2001 | 89° | 56° | 72° | — | — |
| 2000 | 64° | 47° | 55° | — | — |
| 1999 | 87° | 50° | 69° | — | — |
| 1998 | 80° | 51° | 66° | — | — |
| 1997 | 94° | 61° | 77° | — | — |
| 1996 | 88° | 51° | 69° | — | — |
| 1995 | 85° | 56° | 70° | — | — |
| 1994 | 79° | 55° | 67° | — | — |
| 1993 | 83° | 58° | 70° | — | — |
| 1992 | 79° | 56° | 67° | 0.15" | — |
| 1991 | 62° | 44° | 53° | 1.07" | — |
| 1990 | 91° | 63° | 77° | — | — |
| 1989 | 82° | 55° | 69° | — | — |
| 1988 | 88° | 52° | 70° | — | — |
| 1987 | 73° | 46° | 60° | — | — |
| 1986 | 87° | 54° | 70° | — | — |
| 1985 | 78° | 46° | 62° | — | — |
| 1984 | 87° | 45° | 66° | — | — |
| 1983 | 61° | 44° | 52° | 1.32" | — |
| 1982 | 70° | 37° | 53° | — | — |
| 1981 | 73° | 41° | 57° | — | — |
| 1980 | 76° | 43° | 59° | — | — |
| 1979coldest | 58° | 45° | 51° | 1.55" | — |
| 1978 | 79° | 59° | 69° | — | — |
| 1977 | 80° | 44° | 62° | — | — |
| 1976 | 84° | 38° | 61° | — | — |
| 1975 | 80° | 56° | 68° | — | — |
| 1974 | 75° | 55° | 65° | — | — |
| 1973 | 65° | 47° | 56° | 0.36" | — |
| 1972 | 92° | 50° | 71° | — | — |
| 1971 | 83° | 39° | 61° | — | — |
55 years of data from ALHAMBRA