Statewide Rankings

Statewide Data Info
Please note, Degree Days and Palmer Indices are not available for Alaska. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Arizona

Precipitation Rankings, April 1977

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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
April 1977
1-Month 		0.39"
(9.91mm)		 0.57"
(14.48mm)		 -0.18"
(-4.57mm)		 61st Driest
Driest since:
 1989, 1991
68th Wettest
Wettest since:
 1926
Ties: 1959
Mar–Apr 1977
2-Month 		0.86"
(21.84mm)		 1.69"
(42.93mm)		 -0.83"
(-21.09mm)		 31st Driest
Driest since:
 2008
98th Wettest
Wettest since:
 1905
Feb–Apr 1977
3-Month 		1.07"
(27.18mm)		 2.83"
(71.88mm)		 -1.76"
(-44.70mm)		 12th Driest
Driest since:
 1972
117th Wettest
Wettest since:
 1905
Jan–Apr 1977
4-Month 		2.34"
(59.44mm)		 3.98"
(101.09mm)		 -1.64"
(-41.65mm)		 29th Driest
Driest since:
 1972
100th Wettest
Wettest since:
 1905
Dec 1976–Apr 1977
5-Month 		2.70"
(68.58mm)		 5.16"
(131.06mm)		 -2.46"
(-62.48mm)		 18th Driest
Driest since:
 1904
110th Wettest
Wettest since:
 1905
Nov 1976–Apr 1977
6-Month 		3.06"
(77.72mm)		 6.01"
(152.65mm)		 -2.95"
(-74.93mm)		 16th Driest
Driest since:
 1904
112th Wettest
Wettest since:
 1905
Oct 1976–Apr 1977
7-Month 		3.88"
(98.55mm)		 6.89"
(175.01mm)		 -3.01"
(-76.46mm)		 20th Driest
Driest since:
 1904
108th Wettest
Wettest since:
 1941
Sep 1976–Apr 1977
8-Month 		6.22"
(157.99mm)		 8.08"
(205.23mm)		 -1.86"
(-47.24mm)		 42nd Driest
Driest since:
 2002
86th Wettest
Wettest since:
 1941
Ties: 1910, 1948, 1964
Aug 1976–Apr 1977
9-Month 		6.93"
(176.02mm)		 10.16"
(258.06mm)		 -3.23"
(-82.04mm)		 19th Driest
Driest since:
 2021
109th Wettest
Wettest since:
 1941
Jul 1976–Apr 1977
10-Month 		9.38"
(238.25mm)		 11.97"
(304.04mm)		 -2.59"
(-65.79mm)		 29th Driest
Driest since:
 2021
99th Wettest
Wettest since:
 1941
Jun 1976–Apr 1977
11-Month 		9.46"
(240.28mm)		 12.25"
(311.15mm)		 -2.79"
(-70.87mm)		 26th Driest
Driest since:
 2021
102nd Wettest
Wettest since:
 1941
May 1976–Apr 1977
12-Month 		10.33"
(262.38mm)		 12.59"
(319.79mm)		 -2.26"
(-57.41mm)		 37th Driest
Driest since:
 2021
91st Wettest
Wettest since:
 1941
Nov 1975–Apr 1977
18-Month 		15.80"
(401.32mm)		 18.61"
(472.69mm)		 -2.81"
(-71.37mm)		 40th Driest
Driest since:
 1903
87th Wettest
Wettest since:
 1993
May 1975–Apr 1977
24-Month 		20.55"
(521.97mm)		 25.16"
(639.06mm)		 -4.61"
(-117.09mm)		 24th Driest
Driest since:
 1904
103rd Wettest
Wettest since:
 1906
May 1974–Apr 1977
36-Month 		32.25"
(819.15mm)		 37.71"
(957.83mm)		 -5.46"
(-138.68mm)		 25th Driest
Driest since:
 1904
101st Wettest
Wettest since:
 1907
May 1973–Apr 1977
48-Month 		39.75"
(1,009.65mm)		 50.22"
(1,275.59mm)		 -10.47"
(-265.94mm)		 5th Driest
Driest since:
 1904
120th Wettest
Wettest since:
 1908
May 1972–Apr 1977
60-Month 		57.82"
(1,468.63mm)		 62.77"
(1,594.36mm)		 -4.95"
(-125.73mm)		 43rd Driest
Driest since:
 1904
81st Wettest
Wettest since:
 1909
Ties: 1971, 2009

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