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 2015

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 2015
1-Month
0.33"
(8.38mm)
0.45"
(11.43mm)
-0.12"
(-3.05mm)
72nd Driest
Driest since:
1974
57th Wettest
Wettest since:
1918
Ties: 1914, 1934
Aug–Sep 2015
2-Month
0.41"
(10.41mm)
0.69"
(17.53mm)
-0.28"
(-7.12mm)
48th Driest
Driest since:
1937, 2018
81st Wettest
Wettest since:
1983
Ties: 1917
Jul–Sep 2015
3-Month
1.07"
(27.18mm)
0.87"
(22.10mm)
0.20"
(5.08mm)
95th Driest
Driest since:
1928
34th Wettest
Wettest since:
1976
Ties: 1979, 1998
Jun–Sep 2015
4-Month
1.30"
(33.02mm)
1.22"
(30.99mm)
0.08"
(2.03mm)
80th Driest
Driest since:
2002
49th Wettest
Wettest since:
1982
Ties: 1941
May–Sep 2015
5-Month
2.23"
(56.64mm)
2.10"
(53.34mm)
0.13"
(3.30mm)
82nd Driest
Driest since:
1924
47th Wettest
Wettest since:
1998
Apr–Sep 2015
6-Month
3.29"
(83.57mm)
3.74"
(95.00mm)
-0.45"
(-11.43mm)
58th Driest
Driest since:
1924
71st Wettest
Wettest since:
1896
Mar–Sep 2015
7-Month
4.07"
(103.38mm)
6.95"
(176.53mm)
-2.88"
(-73.15mm)
10th Driest
Driest since:
2008
119th Wettest
Wettest since:
1995
Feb–Sep 2015
8-Month
6.93"
(176.02mm)
10.80"
(274.32mm)
-3.87"
(-98.30mm)
19th Driest
Driest since:
2021
110th Wettest
Wettest since:
1998
Jan–Sep 2015
9-Month
7.58"
(192.53mm)
15.05"
(382.27mm)
-7.47"
(-189.74mm)
5th Driest
Driest since:
2022
124th Wettest
Wettest since:
1998
Dec 2014–Sep 2015
10-Month
13.88"
(352.55mm)
18.67"
(474.22mm)
-4.79"
(-121.67mm)
30th Driest
Driest since:
1924
98th Wettest
Wettest since:
1983
Nov 2014–Sep 2015
11-Month
15.72"
(399.29mm)
21.25"
(539.75mm)
-5.53"
(-140.46mm)
27th Driest
Driest since:
1924
101st Wettest
Wettest since:
1983
Ties: 2008
Oct 2014–Sep 2015
12-Month
16.78"
(426.21mm)
22.45"
(570.23mm)
-5.67"
(-144.02mm)
29th Driest
Driest since:
1924
99th Wettest
Wettest since:
1983
Apr 2014–Sep 2015
18-Month
19.64"
(498.86mm)
26.19"
(665.23mm)
-6.55"
(-166.37mm)
20th Driest
Driest since:
2021
108th Wettest
Wettest since:
1983
Oct 2013–Sep 2015
24-Month
29.17"
(740.92mm)
44.90"
(1,140.46mm)
-15.73"
(-399.54mm)
4th Driest
Driest since:
1977
123rd Wettest
Wettest since:
1983
Oct 2012–Sep 2015
36-Month
46.12"
(1,171.45mm)
67.32"
(1,709.93mm)
-21.20"
(-538.48mm)
3rd Driest
Driest since:
2022
123rd Wettest
Wettest since:
1984
Oct 2011–Sep 2015
48-Month
62.56"
(1,589.02mm)
89.51"
(2,273.55mm)
-26.95"
(-684.53mm)
1st Driest
Driest since:
2015
124th Wettest
Wettest since:
1998
Oct 2010–Sep 2015
60-Month
91.38"
(2,321.05mm)
111.69"
(2,836.93mm)
-20.31"
(-515.88mm)
8th Driest
Driest since:
1991
116th Wettest
Wettest since:
1999

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