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 2019

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Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
September 2019
1-Month 		0.61"
(15.49mm)		 0.45"
(11.43mm)		 0.16"
(4.06mm)		 98th Driest
Driest since:
 1974
31st Wettest
Wettest since:
 1918
Ties: 1910
Aug–Sep 2019
2-Month 		0.74"
(18.80mm)		 0.69"
(17.53mm)		 0.05"
(1.27mm)		 87th Driest
Driest since:
 1937, 2018
42nd Wettest
Wettest since:
 1983
Ties: 2003
Jul–Sep 2019
3-Month 		0.82"
(20.83mm)		 0.87"
(22.10mm)		 -0.05"
(-1.27mm)		 76th Driest
Driest since:
 1928
53rd Wettest
Wettest since:
 1976
Ties: 1921, 1938, 1946, 1950
Jun–Sep 2019
4-Month 		0.91"
(23.11mm)		 1.22"
(30.99mm)		 -0.31"
(-7.88mm)		 46th Driest
Driest since:
 2002
83rd Wettest
Wettest since:
 1982
May–Sep 2019
5-Month 		3.41"
(86.61mm)		 2.10"
(53.34mm)		 1.31"
(33.27mm)		 121st Driest
Driest since:
 1924
8th Wettest
Wettest since:
 1998
Apr–Sep 2019
6-Month 		4.63"
(117.60mm)		 3.74"
(95.00mm)		 0.89"
(22.60mm)		 99th Driest
Driest since:
 1924
30th Wettest
Wettest since:
 1896
Mar–Sep 2019
7-Month 		8.68"
(220.47mm)		 6.95"
(176.53mm)		 1.73"
(43.94mm)		 104th Driest
Driest since:
 2008
25th Wettest
Wettest since:
 1995
Feb–Sep 2019
8-Month 		17.25"
(438.15mm)		 10.80"
(274.32mm)		 6.45"
(163.83mm)		 120th Driest
Driest since:
 2021
9th Wettest
Wettest since:
 1998
Jan–Sep 2019
9-Month 		22.48"
(570.99mm)		 15.05"
(382.27mm)		 7.43"
(188.72mm)		 117th Driest
Driest since:
 2022
12th Wettest
Wettest since:
 1998
Dec 2018–Sep 2019
10-Month 		24.86"
(631.44mm)		 18.67"
(474.22mm)		 6.19"
(157.22mm)		 110th Driest
Driest since:
 1924
18th Wettest
Wettest since:
 1983
Nov 2018–Sep 2019
11-Month 		27.67"
(702.82mm)		 21.25"
(539.75mm)		 6.42"
(163.07mm)		 108th Driest
Driest since:
 1924
20th Wettest
Wettest since:
 1983
Oct 2018–Sep 2019
12-Month 		28.37"
(720.60mm)		 22.45"
(570.23mm)		 5.92"
(150.37mm)		 108th Driest
Driest since:
 1924
20th Wettest
Wettest since:
 1983
Ties: 1904
Apr 2018–Sep 2019
18-Month 		31.55"
(801.37mm)		 26.19"
(665.23mm)		 5.36"
(136.14mm)		 105th Driest
Driest since:
 2021
23rd Wettest
Wettest since:
 1983
Oct 2017–Sep 2019
24-Month 		44.19"
(1,122.43mm)		 44.90"
(1,140.46mm)		 -0.71"
(-18.03mm)		 66th Driest
Driest since:
 1977
61st Wettest
Wettest since:
 1983
Oct 2016–Sep 2019
36-Month 		79.21"
(2,011.93mm)		 67.32"
(1,709.93mm)		 11.89"
(302.00mm)		 109th Driest
Driest since:
 2022
17th Wettest
Wettest since:
 1984
Oct 2015–Sep 2019
48-Month 		101.93"
(2,589.02mm)		 89.51"
(2,273.55mm)		 12.42"
(315.47mm)		 106th Driest
Driest since:
 2015
19th Wettest
Wettest since:
 1998
Oct 2014–Sep 2019
60-Month 		118.71"
(3,015.23mm)		 111.69"
(2,836.93mm)		 7.02"
(178.30mm)		 89th Driest
Driest since:
 1991
35th Wettest
Wettest since:
 1999

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