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 2010

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 2010
1-Month
0.16"
(4.06mm)
0.45"
(11.43mm)
-0.29"
(-7.37mm)
35th Driest
Driest since:
1974
94th Wettest
Wettest since:
1918
Ties: 1907, 1943, 1965
Aug–Sep 2010
2-Month
0.26"
(6.60mm)
0.69"
(17.53mm)
-0.43"
(-10.93mm)
20th Driest
Driest since:
1937, 2018
109th Wettest
Wettest since:
1983
Ties: 1933, 1949, 1980, 1993
Jul–Sep 2010
3-Month
0.33"
(8.38mm)
0.87"
(22.10mm)
-0.54"
(-13.72mm)
16th Driest
Driest since:
1928
113th Wettest
Wettest since:
1976
Ties: 1949
Jun–Sep 2010
4-Month
0.59"
(14.99mm)
1.22"
(30.99mm)
-0.63"
(-16.00mm)
20th Driest
Driest since:
2002
109th Wettest
Wettest since:
1982
Ties: 1987
May–Sep 2010
5-Month
1.66"
(42.16mm)
2.10"
(53.34mm)
-0.44"
(-11.18mm)
43rd Driest
Driest since:
1924
86th Wettest
Wettest since:
1998
Apr–Sep 2010
6-Month
5.13"
(130.30mm)
3.74"
(95.00mm)
1.39"
(35.30mm)
106th Driest
Driest since:
1924
23rd Wettest
Wettest since:
1896
Mar–Sep 2010
7-Month
7.32"
(185.93mm)
6.95"
(176.53mm)
0.37"
(9.40mm)
84th Driest
Driest since:
2008
45th Wettest
Wettest since:
1995
Feb–Sep 2010
8-Month
10.97"
(278.64mm)
10.80"
(274.32mm)
0.17"
(4.32mm)
76th Driest
Driest since:
2021
53rd Wettest
Wettest since:
1998
Jan–Sep 2010
9-Month
17.45"
(443.23mm)
15.05"
(382.27mm)
2.40"
(60.96mm)
94th Driest
Driest since:
2022
35th Wettest
Wettest since:
1998
Dec 2009–Sep 2010
10-Month
20.60"
(523.24mm)
18.67"
(474.22mm)
1.93"
(49.02mm)
89th Driest
Driest since:
1924
39th Wettest
Wettest since:
1983
Nov 2009–Sep 2010
11-Month
21.59"
(548.39mm)
21.25"
(539.75mm)
0.34"
(8.64mm)
78th Driest
Driest since:
1924
50th Wettest
Wettest since:
1983
Oct 2009–Sep 2010
12-Month
23.66"
(600.96mm)
22.45"
(570.23mm)
1.21"
(30.73mm)
81st Driest
Driest since:
1924
47th Wettest
Wettest since:
1983
Apr 2009–Sep 2010
18-Month
26.33"
(668.78mm)
26.19"
(665.23mm)
0.14"
(3.55mm)
77th Driest
Driest since:
2021
51st Wettest
Wettest since:
1983
Oct 2008–Sep 2010
24-Month
40.66"
(1,032.76mm)
44.90"
(1,140.46mm)
-4.24"
(-107.70mm)
45th Driest
Driest since:
1977
82nd Wettest
Wettest since:
1983
Oct 2007–Sep 2010
36-Month
57.88"
(1,470.15mm)
67.32"
(1,709.93mm)
-9.44"
(-239.78mm)
31st Driest
Driest since:
2022
95th Wettest
Wettest since:
1984
Oct 2006–Sep 2010
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: 1920
Oct 2005–Sep 2010
60-Month
100.86"
(2,561.84mm)
111.69"
(2,836.93mm)
-10.83"
(-275.09mm)
31st Driest
Driest since:
1991
93rd Wettest
Wettest since:
1999

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