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 1897

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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
September 1897
1-Month
0.39"
(9.91mm)
0.45"
(11.43mm)
-0.06"
(-1.52mm)
79th Driest
Driest since:
1974
50th Wettest
Wettest since:
1918
Aug–Sep 1897
2-Month
0.63"
(16.00mm)
0.69"
(17.53mm)
-0.06"
(-1.53mm)
73rd Driest
Driest since:
1937, 2018
56th Wettest
Wettest since:
1983
Jul–Sep 1897
3-Month
0.74"
(18.80mm)
0.87"
(22.10mm)
-0.13"
(-3.30mm)
64th Driest
Driest since:
1928
65th Wettest
Wettest since:
1976
Jun–Sep 1897
4-Month
1.32"
(33.53mm)
1.22"
(30.99mm)
0.10"
(2.54mm)
83rd Driest
Driest since:
2002
46th Wettest
Wettest since:
1982
Ties: 1907
May–Sep 1897
5-Month
1.67"
(42.42mm)
2.10"
(53.34mm)
-0.43"
(-10.92mm)
44th Driest
Driest since:
1924
85th Wettest
Wettest since:
1998
Ties: 1947, 1980
Apr–Sep 1897
6-Month
2.29"
(58.17mm)
3.74"
(95.00mm)
-1.45"
(-36.83mm)
17th Driest
Driest since:
1924
112th Wettest
Wettest since:
1896
Mar–Sep 1897
7-Month
6.75"
(171.45mm)
6.95"
(176.53mm)
-0.20"
(-5.08mm)
75th Driest
Driest since:
2008
54th Wettest
Wettest since:
1995
Feb–Sep 1897
8-Month
12.64"
(321.06mm)
10.80"
(274.32mm)
1.84"
(46.74mm)
96th Driest
Driest since:
2021
33rd Wettest
Wettest to Date
1998
Jan–Sep 1897
9-Month
15.76"
(400.30mm)
15.05"
(382.27mm)
0.71"
(18.03mm)
82nd Driest
Driest since:
2022
47th Wettest
Wettest since:
1998
Dec 1896–Sep 1897
10-Month
19.49"
(495.05mm)
18.67"
(474.22mm)
0.82"
(20.83mm)
82nd Driest
Driest since:
1924
46th Wettest
Wettest since:
1983
Nov 1896–Sep 1897
11-Month
23.67"
(601.22mm)
21.25"
(539.75mm)
2.42"
(61.47mm)
89th Driest
Driest since:
1924
39th Wettest
Wettest since:
1983
Oct 1896–Sep 1897
12-Month
25.17"
(639.32mm)
22.45"
(570.23mm)
2.72"
(69.09mm)
92nd Driest
Driest since:
1924
36th Wettest
Wettest to Date
1983
Apr 1896–Sep 1897
18-Month
32.78"
(832.61mm)
26.19"
(665.23mm)
6.59"
(167.38mm)
111th Driest
Driest since:
2021
17th Wettest
Wettest to Date
1983
Oct 1895–Sep 1897
24-Month
49.90"
(1,267.46mm)
44.90"
(1,140.46mm)
5.00"
(127.00mm)
95th Driest
Driest since:
1977
32nd Wettest
Wettest to Date
1983

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