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 1945

View Period (Months):
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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
September 1945
1-Month
0.17"
(4.32mm)
0.45"
(11.43mm)
-0.28"
(-7.11mm)
39th Driest
Driest since:
1974
90th Wettest
Wettest since:
1918
Ties: 2003
Aug–Sep 1945
2-Month
0.70"
(17.78mm)
0.69"
(17.53mm)
0.01"
(0.25mm)
85th Driest
Driest since:
1937, 2018
44th Wettest
Wettest since:
1983
Ties: 1921, 1941, 1955, 1973, 2017
Jul–Sep 1945
3-Month
0.84"
(21.34mm)
0.87"
(22.10mm)
-0.03"
(-0.76mm)
79th Driest
Driest since:
1928
50th Wettest
Wettest since:
1976
Ties: 1975
Jun–Sep 1945
4-Month
1.24"
(31.50mm)
1.22"
(30.99mm)
0.02"
(0.51mm)
75th Driest
Driest since:
2002
54th Wettest
Wettest since:
1982
May–Sep 1945
5-Month
2.73"
(69.34mm)
2.10"
(53.34mm)
0.63"
(16.00mm)
107th Driest
Driest since:
1924
22nd Wettest
Wettest since:
1998
Apr–Sep 1945
6-Month
3.32"
(84.33mm)
3.74"
(95.00mm)
-0.42"
(-10.67mm)
60th Driest
Driest since:
1924
69th Wettest
Wettest since:
1896
Mar–Sep 1945
7-Month
7.23"
(183.64mm)
6.95"
(176.53mm)
0.28"
(7.11mm)
82nd Driest
Driest since:
2008
47th Wettest
Wettest since:
1995
Feb–Sep 1945
8-Month
12.27"
(311.66mm)
10.80"
(274.32mm)
1.47"
(37.34mm)
92nd Driest
Driest since:
2021
37th Wettest
Wettest since:
1998
Jan–Sep 1945
9-Month
13.46"
(341.88mm)
15.05"
(382.27mm)
-1.59"
(-40.39mm)
59th Driest
Driest since:
2022
70th Wettest
Wettest since:
1998
Dec 1944–Sep 1945
10-Month
16.09"
(408.69mm)
18.67"
(474.22mm)
-2.58"
(-65.53mm)
56th Driest
Driest since:
1924
72nd Wettest
Wettest since:
1983
Nov 1944–Sep 1945
11-Month
21.18"
(537.97mm)
21.25"
(539.75mm)
-0.07"
(-1.78mm)
76th Driest
Driest since:
1924
52nd Wettest
Wettest since:
1983
Oct 1944–Sep 1945
12-Month
22.28"
(565.91mm)
22.45"
(570.23mm)
-0.17"
(-4.32mm)
71st Driest
Driest since:
1924
57th Wettest
Wettest since:
1983
Apr 1944–Sep 1945
18-Month
25.80"
(655.32mm)
26.19"
(665.23mm)
-0.39"
(-9.91mm)
70th Driest
Driest since:
2021
58th Wettest
Wettest since:
1983
Ties: 1979
Oct 1943–Sep 1945
24-Month
40.96"
(1,040.38mm)
44.90"
(1,140.46mm)
-3.94"
(-100.08mm)
47th Driest
Driest since:
1977
80th Wettest
Wettest since:
1983
Oct 1942–Sep 1945
36-Month
66.24"
(1,682.50mm)
67.32"
(1,709.93mm)
-1.08"
(-27.43mm)
70th Driest
Driest since:
2022
56th Wettest
Wettest since:
1984
Oct 1941–Sep 1945
48-Month
92.39"
(2,346.71mm)
89.51"
(2,273.55mm)
2.88"
(73.16mm)
80th Driest
Driest since:
2015
45th Wettest
Wettest since:
1998
Oct 1940–Sep 1945
60-Month
127.26"
(3,232.40mm)
111.69"
(2,836.93mm)
15.57"
(395.47mm)
106th Driest
Driest since:
1991
18th Wettest
Wettest since:
1999

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