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.

California

Precipitation Rankings, September 1990

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Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
September 1990
1-Month 		0.41"
(10.41mm)		 0.45"
(11.43mm)		 -0.04"
(-1.02mm)		 81st Driest
Driest since:
 1974
48th Wettest
Wettest since:
 1918
Aug–Sep 1990
2-Month 		0.77"
(19.56mm)		 0.69"
(17.53mm)		 0.08"
(2.03mm)		 89th Driest
Driest since:
 1937, 2018
40th Wettest
Wettest since:
 1983
Ties: 1930
Jul–Sep 1990
3-Month 		1.05"
(26.67mm)		 0.87"
(22.10mm)		 0.18"
(4.57mm)		 92nd Driest
Driest since:
 1928
37th Wettest
Wettest since:
 1976
Jun–Sep 1990
4-Month 		1.23"
(31.24mm)		 1.22"
(30.99mm)		 0.01"
(0.25mm)		 74th Driest
Driest since:
 2002
55th Wettest
Wettest since:
 1982
May–Sep 1990
5-Month 		3.69"
(93.73mm)		 2.10"
(53.34mm)		 1.59"
(40.39mm)		 123rd Driest
Driest since:
 1924
6th Wettest
Wettest since:
 1998
Apr–Sep 1990
6-Month 		4.52"
(114.81mm)		 3.74"
(95.00mm)		 0.78"
(19.81mm)		 98th Driest
Driest since:
 1924
31st Wettest
Wettest since:
 1896
Ties: 1900
Mar–Sep 1990
7-Month 		5.82"
(147.83mm)		 6.95"
(176.53mm)		 -1.13"
(-28.70mm)		 56th Driest
Driest since:
 2008
73rd Wettest
Wettest since:
 1995
Feb–Sep 1990
8-Month 		8.18"
(207.77mm)		 10.80"
(274.32mm)		 -2.62"
(-66.55mm)		 42nd Driest
Driest since:
 2021
87th Wettest
Wettest since:
 1998
Jan–Sep 1990
9-Month 		11.90"
(302.26mm)		 15.05"
(382.27mm)		 -3.15"
(-80.01mm)		 46th Driest
Driest since:
 2022
83rd Wettest
Wettest since:
 1998
Dec 1989–Sep 1990
10-Month 		12.02"
(305.31mm)		 18.67"
(474.22mm)		 -6.65"
(-168.91mm)		 14th Driest
Driest since:
 1924
114th Wettest
Wettest since:
 1983
Nov 1989–Sep 1990
11-Month 		13.07"
(331.98mm)		 21.25"
(539.75mm)		 -8.18"
(-207.77mm)		 7th Driest
Driest since:
 1924
121st Wettest
Wettest since:
 1983
Oct 1989–Sep 1990
12-Month 		15.02"
(381.51mm)		 22.45"
(570.23mm)		 -7.43"
(-188.72mm)		 9th Driest
Driest since:
 1924
119th Wettest
Wettest since:
 1983
Apr 1989–Sep 1990
18-Month 		18.59"
(472.19mm)		 26.19"
(665.23mm)		 -7.60"
(-193.04mm)		 14th Driest
Driest since:
 2021
114th Wettest
Wettest since:
 1983
Oct 1988–Sep 1990
24-Month 		34.21"
(868.93mm)		 44.90"
(1,140.46mm)		 -10.69"
(-271.53mm)		 19th Driest
Driest since:
 1977
108th Wettest
Wettest since:
 1983
Oct 1987–Sep 1990
36-Month 		52.58"
(1,335.53mm)		 67.32"
(1,709.93mm)		 -14.74"
(-374.40mm)		 14th Driest
Driest since:
 2022
112th Wettest
Wettest since:
 1984
Oct 1986–Sep 1990
48-Month 		66.55"
(1,690.37mm)		 89.51"
(2,273.55mm)		 -22.96"
(-583.18mm)		 2nd Driest
Driest to Date
 2015
123rd Wettest
Wettest since:
 1998
Oct 1985–Sep 1990
60-Month 		94.98"
(2,412.49mm)		 111.69"
(2,836.93mm)		 -16.71"
(-424.44mm)		 14th Driest
Driest since:
 1991
110th Wettest
Wettest since:
 1999

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