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 2009

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 2009
1-Month
0.09"
(2.29mm)
0.45"
(11.43mm)
-0.36"
(-9.14mm)
14th Driest
Driest since:
1974
115th Wettest
Wettest since:
1918
Ties: 1915, 1937
Aug–Sep 2009
2-Month
0.21"
(5.33mm)
0.69"
(17.53mm)
-0.48"
(-12.20mm)
14th Driest
Driest since:
1937, 2018
115th Wettest
Wettest since:
1983
Jul–Sep 2009
3-Month
0.26"
(6.60mm)
0.87"
(22.10mm)
-0.61"
(-15.50mm)
6th Driest
Driest since:
1928
123rd Wettest
Wettest since:
1976
Jun–Sep 2009
4-Month
0.86"
(21.84mm)
1.22"
(30.99mm)
-0.36"
(-9.15mm)
36th Driest
Driest since:
2002
93rd Wettest
Wettest since:
1982
Ties: 1930, 1943, 2001
May–Sep 2009
5-Month
2.10"
(53.34mm)
2.10"
(53.34mm)
0.00"
(0.00mm)
74th Driest
Driest since:
1924
55th Wettest
Wettest since:
1998
Ties: 1922
Apr–Sep 2009
6-Month
2.67"
(67.82mm)
3.74"
(95.00mm)
-1.07"
(-27.18mm)
28th Driest
Driest since:
1924
101st Wettest
Wettest since:
1896
Ties: 1974
Mar–Sep 2009
7-Month
4.93"
(125.22mm)
6.95"
(176.53mm)
-2.02"
(-51.31mm)
32nd Driest
Driest since:
2008
97th Wettest
Wettest since:
1995
Feb–Sep 2009
8-Month
9.57"
(243.08mm)
10.80"
(274.32mm)
-1.23"
(-31.24mm)
62nd Driest
Driest since:
2021
67th Wettest
Wettest since:
1998
Jan–Sep 2009
9-Month
10.84"
(275.34mm)
15.05"
(382.27mm)
-4.21"
(-106.93mm)
31st Driest
Driest since:
2022
98th Wettest
Wettest since:
1998
Dec 2008–Sep 2009
10-Month
13.89"
(352.81mm)
18.67"
(474.22mm)
-4.78"
(-121.41mm)
31st Driest
Driest since:
1924
97th Wettest
Wettest since:
1983
Nov 2008–Sep 2009
11-Month
16.30"
(414.02mm)
21.25"
(539.75mm)
-4.95"
(-125.73mm)
31st Driest
Driest since:
1924
97th Wettest
Wettest since:
1983
Oct 2008–Sep 2009
12-Month
17.00"
(431.80mm)
22.45"
(570.23mm)
-5.45"
(-138.43mm)
31st Driest
Driest since:
1924
97th Wettest
Wettest since:
1983
Apr 2008–Sep 2009
18-Month
18.21"
(462.53mm)
26.19"
(665.23mm)
-7.98"
(-202.70mm)
11th Driest
Driest since:
2021
117th Wettest
Wettest since:
1983
Oct 2007–Sep 2009
24-Month
34.22"
(869.19mm)
44.90"
(1,140.46mm)
-10.68"
(-271.27mm)
20th Driest
Driest since:
1977
107th Wettest
Wettest since:
1983
Oct 2006–Sep 2009
36-Month
48.18"
(1,223.77mm)
67.32"
(1,709.93mm)
-19.14"
(-486.16mm)
6th Driest
Driest since:
2022
120th Wettest
Wettest since:
1984
Oct 2005–Sep 2009
48-Month
77.20"
(1,960.88mm)
89.51"
(2,273.55mm)
-12.31"
(-312.67mm)
21st Driest
Driest since:
2015
104th Wettest
Wettest since:
1998
Oct 2004–Sep 2009
60-Month
107.14"
(2,721.36mm)
111.69"
(2,836.93mm)
-4.55"
(-115.57mm)
57th Driest
Driest since:
1991
67th Wettest
Wettest since:
1999

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