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, July 1939

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  • Record Wettest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
July 1939
1-Month 		0.18"
(4.57mm)		 0.18"
(4.57mm)		 0.00"
(0.00mm)		 76th Driest
Driest since:
 1940
53rd Wettest
Wettest since:
 1913
Ties: 1927, 1937, 2007
Jun–Jul 1939
2-Month 		0.31"
(7.87mm)		 0.53"
(13.46mm)		 -0.22"
(-5.59mm)		 41st Driest
Driest since:
 1901
88th Wettest
Wettest since:
 1913
Ties: 1921
May–Jul 1939
3-Month 		1.34"
(34.04mm)		 1.41"
(35.81mm)		 -0.07"
(-1.77mm)		 73rd Driest
Driest since:
 1924
56th Wettest
Wettest since:
 1998
Ties: 1997
Apr–Jul 1939
4-Month 		1.89"
(48.01mm)		 3.04"
(77.22mm)		 -1.15"
(-29.21mm)		 24th Driest
Driest since:
 1909
105th Wettest
Wettest since:
 1896
Ties: 2007
Mar–Jul 1939
5-Month 		4.54"
(115.32mm)		 6.26"
(159.00mm)		 -1.72"
(-43.68mm)		 38th Driest
Driest since:
 2008
91st Wettest
Wettest since:
 1995
Feb–Jul 1939
6-Month 		6.51"
(165.35mm)		 10.10"
(256.54mm)		 -3.59"
(-91.19mm)		 22nd Driest
Driest since:
 1997
107th Wettest
Wettest since:
 1998
Jan–Jul 1939
7-Month 		9.58"
(243.33mm)		 14.36"
(364.74mm)		 -4.78"
(-121.41mm)		 27th Driest
Driest since:
 2022
102nd Wettest
Wettest since:
 1995
Dec 1938–Jul 1939
8-Month 		12.31"
(312.67mm)		 17.98"
(456.69mm)		 -5.67"
(-144.02mm)		 19th Driest
Driest since:
 1924
109th Wettest
Wettest since:
 1998
Nov 1938–Jul 1939
9-Month 		13.55"
(344.17mm)		 20.55"
(521.97mm)		 -7.00"
(-177.80mm)		 12th Driest
Driest since:
 1924
116th Wettest
Wettest since:
 1983, 1998
Oct 1938–Jul 1939
10-Month 		15.06"
(382.52mm)		 21.75"
(552.45mm)		 -6.69"
(-169.93mm)		 16th Driest
Driest since:
 1977
112th Wettest
Wettest since:
 1983
Sep 1938–Jul 1939
11-Month 		15.52"
(394.21mm)		 22.20"
(563.88mm)		 -6.68"
(-169.67mm)		 14th Driest
Driest since:
 1977
114th Wettest
Wettest since:
 1983
Aug 1938–Jul 1939
12-Month 		15.63"
(397.00mm)		 22.44"
(569.98mm)		 -6.81"
(-172.98mm)		 14th Driest
Driest since:
 2021
114th Wettest
Wettest since:
 1983
Feb 1938–Jul 1939
18-Month 		34.79"
(883.67mm)		 32.51"
(825.75mm)		 2.28"
(57.92mm)		 88th Driest
Driest since:
 2014
40th Wettest
Wettest since:
 1983
Aug 1937–Jul 1939
24-Month 		48.87"
(1,241.30mm)		 44.90"
(1,140.46mm)		 3.97"
(100.84mm)		 90th Driest
Driest since:
 1977
37th Wettest
Wettest since:
 1983
Aug 1936–Jul 1939
36-Month 		72.31"
(1,836.67mm)		 67.31"
(1,709.67mm)		 5.00"
(127.00mm)		 88th Driest
Driest since:
 2022
38th Wettest
Wettest since:
 1984
Aug 1935–Jul 1939
48-Month 		95.55"
(2,426.97mm)		 89.50"
(2,273.30mm)		 6.05"
(153.67mm)		 89th Driest
Driest since:
 2015
36th Wettest
Wettest since:
 1998
Aug 1934–Jul 1939
60-Month 		120.48"
(3,060.19mm)		 111.68"
(2,836.67mm)		 8.80"
(223.52mm)		 96th Driest
Driest since:
 1991
28th Wettest
Wettest since:
 1999

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