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 1948

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  • Record Wettest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
September 1948
1-Month 		0.40"
(10.16mm)		 0.45"
(11.43mm)		 -0.05"
(-1.27mm)		 80th Driest
Driest since:
 1974
49th Wettest
Wettest since:
 1918
Aug–Sep 1948
2-Month 		0.48"
(12.19mm)		 0.69"
(17.53mm)		 -0.21"
(-5.34mm)		 57th Driest
Driest since:
 1937, 2018
72nd Wettest
Wettest since:
 1983
Jul–Sep 1948
3-Month 		0.65"
(16.51mm)		 0.87"
(22.10mm)		 -0.22"
(-5.59mm)		 50th Driest
Driest since:
 1928
79th Wettest
Wettest since:
 1976
Ties: 1951
Jun–Sep 1948
4-Month 		1.31"
(33.27mm)		 1.22"
(30.99mm)		 0.09"
(2.28mm)		 81st Driest
Driest since:
 2002
48th Wettest
Wettest since:
 1982
May–Sep 1948
5-Month 		2.62"
(66.55mm)		 2.10"
(53.34mm)		 0.52"
(13.21mm)		 99th Driest
Driest since:
 1924
30th Wettest
Wettest since:
 1998
Apr–Sep 1948
6-Month 		7.00"
(177.80mm)		 3.74"
(95.00mm)		 3.26"
(82.80mm)		 125th Driest
Driest since:
 1924
4th Wettest
Wettest since:
 1896
Mar–Sep 1948
7-Month 		10.48"
(266.19mm)		 6.95"
(176.53mm)		 3.53"
(89.66mm)		 111th Driest
Driest since:
 2008
18th Wettest
Wettest since:
 1995
Feb–Sep 1948
8-Month 		12.47"
(316.74mm)		 10.80"
(274.32mm)		 1.67"
(42.42mm)		 93rd Driest
Driest since:
 2021
36th Wettest
Wettest since:
 1998
Jan–Sep 1948
9-Month 		14.51"
(368.55mm)		 15.05"
(382.27mm)		 -0.54"
(-13.72mm)		 70th Driest
Driest since:
 2022
59th Wettest
Wettest since:
 1998
Dec 1947–Sep 1948
10-Month 		15.95"
(405.13mm)		 18.67"
(474.22mm)		 -2.72"
(-69.09mm)		 53rd Driest
Driest since:
 1924
75th Wettest
Wettest since:
 1983
Nov 1947–Sep 1948
11-Month 		16.75"
(425.45mm)		 21.25"
(539.75mm)		 -4.50"
(-114.30mm)		 40th Driest
Driest since:
 1924
88th Wettest
Wettest since:
 1983
Oct 1947–Sep 1948
12-Month 		19.50"
(495.30mm)		 22.45"
(570.23mm)		 -2.95"
(-74.93mm)		 56th Driest
Driest since:
 1924
72nd Wettest
Wettest since:
 1983
Apr 1947–Sep 1948
18-Month 		21.93"
(557.02mm)		 26.19"
(665.23mm)		 -4.26"
(-108.21mm)		 43rd Driest
Driest since:
 2021
85th Wettest
Wettest since:
 1983
Oct 1946–Sep 1948
24-Month 		36.02"
(914.91mm)		 44.90"
(1,140.46mm)		 -8.88"
(-225.55mm)		 26th Driest
Driest since:
 1977
101st Wettest
Wettest since:
 1983
Oct 1945–Sep 1948
36-Month 		57.12"
(1,450.85mm)		 67.32"
(1,709.93mm)		 -10.20"
(-259.08mm)		 29th Driest
Driest since:
 2022
97th Wettest
Wettest since:
 1984
Oct 1944–Sep 1948
48-Month 		79.40"
(2,016.76mm)		 89.51"
(2,273.55mm)		 -10.11"
(-256.79mm)		 32nd Driest
Driest since:
 2015
93rd Wettest
Wettest since:
 1998
Ties: 1979
Oct 1943–Sep 1948
60-Month 		98.08"
(2,491.23mm)		 111.69"
(2,836.93mm)		 -13.61"
(-345.70mm)		 23rd Driest
Driest since:
 1991
101st Wettest
Wettest since:
 1999

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