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 1987

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 1987
1-Month
0.10"
(2.54mm)
0.45"
(11.43mm)
-0.35"
(-8.89mm)
17th Driest
Driest since:
1974
112th Wettest
Wettest since:
1918
Ties: 1928, 1944, 2012, 2016
Aug–Sep 1987
2-Month
0.14"
(3.56mm)
0.69"
(17.53mm)
-0.55"
(-13.97mm)
8th Driest
Driest since:
1937, 2018
121st Wettest
Wettest since:
1983
Ties: 2020
Jul–Sep 1987
3-Month
0.39"
(9.91mm)
0.87"
(22.10mm)
-0.48"
(-12.19mm)
22nd Driest
Driest since:
1928
107th Wettest
Wettest since:
1976
Ties: 2004
Jun–Sep 1987
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: 2010
May–Sep 1987
5-Month
1.22"
(30.99mm)
2.10"
(53.34mm)
-0.88"
(-22.35mm)
18th Driest
Driest since:
1924
111th Wettest
Wettest since:
1998
Apr–Sep 1987
6-Month
1.62"
(41.15mm)
3.74"
(95.00mm)
-2.12"
(-53.85mm)
4th Driest
Driest since:
1924
125th Wettest
Wettest since:
1896
Ties: 2004
Mar–Sep 1987
7-Month
5.21"
(132.33mm)
6.95"
(176.53mm)
-1.74"
(-44.20mm)
39th Driest
Driest since:
2008
90th Wettest
Wettest since:
1995
Feb–Sep 1987
8-Month
8.00"
(203.20mm)
10.80"
(274.32mm)
-2.80"
(-71.12mm)
39th Driest
Driest since:
2021
90th Wettest
Wettest since:
1998
Jan–Sep 1987
9-Month
11.07"
(281.18mm)
15.05"
(382.27mm)
-3.98"
(-101.09mm)
35th Driest
Driest since:
2022
94th Wettest
Wettest since:
1998
Dec 1986–Sep 1987
10-Month
12.56"
(319.02mm)
18.67"
(474.22mm)
-6.11"
(-155.20mm)
19th Driest
Driest since:
1924
109th Wettest
Wettest since:
1983
Ties: 1961
Nov 1986–Sep 1987
11-Month
13.33"
(338.58mm)
21.25"
(539.75mm)
-7.92"
(-201.17mm)
9th Driest
Driest since:
1924
119th Wettest
Wettest since:
1983
Oct 1986–Sep 1987
12-Month
13.97"
(354.84mm)
22.45"
(570.23mm)
-8.48"
(-215.39mm)
6th Driest
Driest since:
1924
122nd Wettest
Wettest since:
1983
Apr 1986–Sep 1987
18-Month
17.49"
(444.25mm)
26.19"
(665.23mm)
-8.70"
(-220.98mm)
6th Driest
Driest since:
2021
122nd Wettest
Wettest since:
1983
Oct 1985–Sep 1987
24-Month
42.40"
(1,076.96mm)
44.90"
(1,140.46mm)
-2.50"
(-63.50mm)
55th Driest
Driest since:
1977
72nd Wettest
Wettest since:
1983
Oct 1984–Sep 1987
36-Month
60.64"
(1,540.26mm)
67.32"
(1,709.93mm)
-6.68"
(-169.67mm)
43rd Driest
Driest since:
2022
83rd Wettest
Wettest since:
1984
Oct 1983–Sep 1987
48-Month
83.02"
(2,108.71mm)
89.51"
(2,273.55mm)
-6.49"
(-164.84mm)
48th Driest
Driest since:
2015
77th Wettest
Wettest since:
1998
Oct 1982–Sep 1987
60-Month
123.43"
(3,135.12mm)
111.69"
(2,836.93mm)
11.74"
(298.19mm)
101st Driest
Driest since:
1991
23rd Wettest
Wettest since:
1999

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