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 1937

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  • Record Wettest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
September 1937
1-Month 		0.09"
(2.29mm)		 0.45"
(11.43mm)		 -0.36"
(-9.14mm)		 14th Driest
Driest since:
 1974
115th Wettest
Wettest since:
 1918
Ties: 1915, 2009
Aug–Sep 1937
2-Month 		0.10"
(2.54mm)		 0.69"
(17.53mm)		 -0.59"
(-14.99mm)		 1st Driest
Driest since:
 1937, 2018
128th Wettest
Wettest since:
 1983
Ties: 2018
Jul–Sep 1937
3-Month 		0.28"
(7.11mm)		 0.87"
(22.10mm)		 -0.59"
(-14.99mm)		 8th Driest
Driest since:
 1928
121st Wettest
Wettest since:
 1976
Jun–Sep 1937
4-Month 		1.03"
(26.16mm)		 1.22"
(30.99mm)		 -0.19"
(-4.83mm)		 56th Driest
Driest since:
 2002
73rd Wettest
Wettest since:
 1982
May–Sep 1937
5-Month 		1.33"
(33.78mm)		 2.10"
(53.34mm)		 -0.77"
(-19.56mm)		 25th Driest
Driest since:
 1924
104th Wettest
Wettest since:
 1998
Apr–Sep 1937
6-Month 		2.82"
(71.63mm)		 3.74"
(95.00mm)		 -0.92"
(-23.37mm)		 37th Driest
Driest since:
 1924
92nd Wettest
Wettest since:
 1896
Mar–Sep 1937
7-Month 		7.68"
(195.07mm)		 6.95"
(176.53mm)		 0.73"
(18.54mm)		 91st Driest
Driest since:
 2008
38th Wettest
Wettest since:
 1995
Feb–Sep 1937
8-Month 		13.88"
(352.55mm)		 10.80"
(274.32mm)		 3.08"
(78.23mm)		 107th Driest
Driest since:
 2021
22nd Wettest
Wettest since:
 1998
Jan–Sep 1937
9-Month 		17.28"
(438.91mm)		 15.05"
(382.27mm)		 2.23"
(56.64mm)		 93rd Driest
Driest since:
 2022
36th Wettest
Wettest since:
 1998
Dec 1936–Sep 1937
10-Month 		21.81"
(553.97mm)		 18.67"
(474.22mm)		 3.14"
(79.75mm)		 95th Driest
Driest since:
 1924
33rd Wettest
Wettest since:
 1983
Nov 1936–Sep 1937
11-Month 		21.95"
(557.53mm)		 21.25"
(539.75mm)		 0.70"
(17.78mm)		 82nd Driest
Driest since:
 1924
46th Wettest
Wettest since:
 1983
Oct 1936–Sep 1937
12-Month 		23.12"
(587.25mm)		 22.45"
(570.23mm)		 0.67"
(17.02mm)		 79th Driest
Driest since:
 1924
49th Wettest
Wettest since:
 1983
Apr 1936–Sep 1937
18-Month 		26.85"
(681.99mm)		 26.19"
(665.23mm)		 0.66"
(16.76mm)		 80th Driest
Driest since:
 2021
48th Wettest
Wettest since:
 1983
Oct 1935–Sep 1937
24-Month 		46.18"
(1,172.97mm)		 44.90"
(1,140.46mm)		 1.28"
(32.51mm)		 77th Driest
Driest since:
 1977
50th Wettest
Wettest since:
 1983
Ties: 1971
Oct 1934–Sep 1937
36-Month 		71.14"
(1,806.96mm)		 67.32"
(1,709.93mm)		 3.82"
(97.03mm)		 84th Driest
Driest since:
 2022
42nd Wettest
Wettest since:
 1984
Oct 1933–Sep 1937
48-Month 		86.75"
(2,203.45mm)		 89.51"
(2,273.55mm)		 -2.76"
(-70.10mm)		 59th Driest
Driest since:
 2015
66th Wettest
Wettest since:
 1998
Oct 1932–Sep 1937
60-Month 		102.71"
(2,608.83mm)		 111.69"
(2,836.93mm)		 -8.98"
(-228.10mm)		 40th Driest
Driest since:
 1991
84th Wettest
Wettest since:
 1999

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