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 1920

View Period (Months):
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
September 1920
1-Month
0.37"
(9.40mm)
0.45"
(11.43mm)
-0.08"
(-2.03mm)
78th Driest
Driest since:
1974
51st Wettest
Wettest since:
1918
Aug–Sep 1920
2-Month
0.84"
(21.34mm)
0.69"
(17.53mm)
0.15"
(3.81mm)
94th Driest
Driest since:
1937, 2018
35th Wettest
Wettest since:
1983
Jul–Sep 1920
3-Month
0.97"
(24.64mm)
0.87"
(22.10mm)
0.10"
(2.54mm)
90th Driest
Driest since:
1928
39th Wettest
Wettest since:
1976
Ties: 1972
Jun–Sep 1920
4-Month
1.48"
(37.59mm)
1.22"
(30.99mm)
0.26"
(6.60mm)
98th Driest
Driest since:
2002
31st Wettest
Wettest since:
1982
May–Sep 1920
5-Month
1.69"
(42.93mm)
2.10"
(53.34mm)
-0.41"
(-10.41mm)
47th Driest
Driest since:
1924
82nd Wettest
Wettest since:
1998
Apr–Sep 1920
6-Month
3.73"
(94.74mm)
3.74"
(95.00mm)
-0.01"
(-0.26mm)
82nd Driest
Driest since:
1924
47th Wettest
Wettest since:
1896
Ties: 1936, 2000
Mar–Sep 1920
7-Month
8.22"
(208.79mm)
6.95"
(176.53mm)
1.27"
(32.26mm)
96th Driest
Driest since:
2008
33rd Wettest
Wettest since:
1995
Ties: 1986
Feb–Sep 1920
8-Month
10.52"
(267.21mm)
10.80"
(274.32mm)
-0.28"
(-7.11mm)
71st Driest
Driest since:
2021
58th Wettest
Wettest since:
1998
Jan–Sep 1920
9-Month
11.43"
(290.32mm)
15.05"
(382.27mm)
-3.62"
(-91.95mm)
40th Driest
Driest since:
2022
89th Wettest
Wettest since:
1998
Dec 1919–Sep 1920
10-Month
14.71"
(373.63mm)
18.67"
(474.22mm)
-3.96"
(-100.59mm)
38th Driest
Driest since:
1924
90th Wettest
Wettest since:
1983
Nov 1919–Sep 1920
11-Month
15.53"
(394.46mm)
21.25"
(539.75mm)
-5.72"
(-145.29mm)
24th Driest
Driest since:
1924
104th Wettest
Wettest since:
1983
Ties: 1933
Oct 1919–Sep 1920
12-Month
16.03"
(407.16mm)
22.45"
(570.23mm)
-6.42"
(-163.07mm)
20th Driest
Driest since:
1924
108th Wettest
Wettest since:
1983
Apr 1919–Sep 1920
18-Month
18.63"
(473.20mm)
26.19"
(665.23mm)
-7.56"
(-192.03mm)
15th Driest
Driest since:
2021
113th Wettest
Wettest since:
1983
Oct 1918–Sep 1920
24-Month
35.67"
(906.02mm)
44.90"
(1,140.46mm)
-9.23"
(-234.44mm)
24th Driest
Driest since:
1977
103rd Wettest
Wettest since:
1983
Oct 1917–Sep 1920
36-Month
53.16"
(1,350.26mm)
67.32"
(1,709.93mm)
-14.16"
(-359.67mm)
17th Driest
Driest since:
2022
109th Wettest
Wettest since:
1984
Oct 1916–Sep 1920
48-Month
71.84"
(1,824.74mm)
89.51"
(2,273.55mm)
-17.67"
(-448.81mm)
14th Driest
Driest since:
2015
111th Wettest
Wettest since:
1998
Ties: 2010
Oct 1915–Sep 1920
60-Month
96.92"
(2,461.77mm)
111.69"
(2,836.93mm)
-14.77"
(-375.16mm)
20th Driest
Driest since:
1991
104th Wettest
Wettest since:
1999

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