Weather on March 31
Phoenix, AZ
55 Years of Data
Avg High
82°F
Avg Low
52°F
Warmest
2026
85°F avg
Coldest
1998
53°F avg
About This Date
March 31st in Phoenix, AZ typically brings warm spring weather, with average highs around 82°F and lows near 52°F — a 30°F daily swing. Over 56 years of records, the warmest March 31st was in 2026 (85°F average), while the coldest was 1998 (53°F) — a 32°F range across recorded history. Rain or other precipitation has occurred on about 5% of March 31st dates historically. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for March 31st in Phoenix, AZ? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026warmest | 89° | 80° | 85° | — | — |
| 2025 | 82° | 57° | 70° | — | — |
| 2024 | 83° | 46° | 64° | — | — |
| 2023 | 70° | 40° | 55° | — | — |
| 2022 | 81° | 50° | 65° | — | — |
| 2021 | 88° | 61° | 74° | — | — |
| 2020 | 81° | 50° | 65° | — | — |
| 2019 | 83° | 50° | 66° | — | — |
| 2018 | 92° | 58° | 75° | — | — |
| 2017 | 87° | 55° | 71° | — | — |
| 2016 | 74° | 48° | 61° | — | — |
| 2015 | 95° | 63° | 79° | — | — |
| 2014 | 83° | 50° | 66° | — | — |
| 2013 | 88° | 56° | 72° | — | — |
| 2012 | 91° | 59° | 75° | — | — |
| 2011 | 94° | 62° | 78° | — | — |
| 2010 | 86° | 56° | 71° | — | — |
| 2009 | 79° | 52° | 65° | — | — |
| 2008 | 77° | 49° | 63° | — | — |
| 2007 | 83° | 50° | 66° | — | — |
| 2006 | 75° | 55° | 65° | — | — |
| 2005 | 76° | 48° | 62° | — | — |
| 2004 | 97° | 63° | 80° | — | — |
| 2003 | 88° | 51° | 69° | — | — |
| 2002 | 91° | 54° | 72° | — | — |
| 2001 | 89° | 53° | 71° | — | — |
| 2000 | 71° | 51° | 61° | 0.05" | — |
| 1999 | 86° | 54° | 70° | — | — |
| 1998coldest | 66° | 40° | 53° | — | — |
| 1997 | 86° | 63° | 74° | — | — |
| 1996 | 87° | 46° | 67° | — | — |
| 1995 | 80° | 55° | 68° | — | — |
| 1994 | 88° | 52° | 70° | — | — |
| 1993 | 80° | 50° | 65° | — | — |
| 1992 | 74° | 55° | 64° | 0.05" | — |
| 1991 | 82° | 47° | 64° | — | — |
| 1990 | 72° | 52° | 62° | 0.08" | — |
| 1989 | 90° | 56° | 73° | — | — |
| 1988 | 76° | 46° | 61° | — | — |
| 1987 | 83° | 45° | 64° | — | — |
| 1986 | 90° | 63° | 76° | — | — |
| 1985 | 75° | 40° | 57° | — | — |
| 1984 | 78° | 46° | 62° | — | — |
| 1983 | 87° | 50° | 69° | — | — |
| 1982 | 78° | 44° | 61° | — | — |
| 1981 | 83° | 52° | 67° | — | — |
| 1980 | 74° | 48° | 61° | — | — |
| 1979 | 71° | 45° | 58° | — | — |
| 1978 | 85° | 56° | 70° | — | — |
| 1977 | 73° | 44° | 59° | — | — |
| 1976 | 85° | 42° | 63° | — | — |
| 1975 | 76° | 38° | 57° | — | — |
| 1974 | 83° | 54° | 68° | — | — |
| 1973 | 72° | 40° | 56° | — | — |
| 1972 | 82° | 43° | 62° | — | — |
| 1971 | 94° | 58° | 76° | — | — |
56 years of data from BEARDSLEY