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, August 1939

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
August 1939
1-Month
0.18"
(4.57mm)
0.24"
(6.10mm)
-0.06"
(-1.53mm)
59th Driest
Driest since:
1937, 2002
70th Wettest
Wettest since:
1983
Jul–Aug 1939
2-Month
0.36"
(9.14mm)
0.42"
(10.67mm)
-0.06"
(-1.53mm)
75th Driest
Driest since:
1940
54th Wettest
Wettest since:
1983
Ties: 1938, 1962, 2017
Jun–Aug 1939
3-Month
0.49"
(12.45mm)
0.77"
(19.56mm)
-0.28"
(-7.11mm)
40th Driest
Driest since:
2002
89th Wettest
Wettest since:
1913
Ties: 1987
May–Aug 1939
4-Month
1.52"
(38.61mm)
1.65"
(41.91mm)
-0.13"
(-3.30mm)
69th Driest
Driest since:
1924
60th Wettest
Wettest since:
1998
Ties: 1944
Apr–Aug 1939
5-Month
2.07"
(52.58mm)
3.29"
(83.57mm)
-1.22"
(-30.99mm)
23rd Driest
Driest since:
2021
106th Wettest
Wettest since:
1896
Mar–Aug 1939
6-Month
4.72"
(119.89mm)
6.50"
(165.10mm)
-1.78"
(-45.21mm)
38th Driest
Driest since:
2008
91st Wettest
Wettest since:
1995
Feb–Aug 1939
7-Month
6.69"
(169.93mm)
10.35"
(262.89mm)
-3.66"
(-92.96mm)
22nd Driest
Driest since:
1997, 2021
107th Wettest
Wettest since:
1998
Jan–Aug 1939
8-Month
9.76"
(247.90mm)
14.60"
(370.84mm)
-4.84"
(-122.94mm)
25th Driest
Driest since:
2022
104th Wettest
Wettest since:
1995
Dec 1938–Aug 1939
9-Month
12.49"
(317.25mm)
18.22"
(462.79mm)
-5.73"
(-145.54mm)
22nd Driest
Driest since:
1924
106th Wettest
Wettest since:
1998
Nov 1938–Aug 1939
10-Month
13.73"
(348.74mm)
20.80"
(528.32mm)
-7.07"
(-179.58mm)
12th Driest
Driest since:
1924
116th Wettest
Wettest since:
1983
Oct 1938–Aug 1939
11-Month
15.24"
(387.10mm)
22.00"
(558.80mm)
-6.76"
(-171.70mm)
15th Driest
Driest since:
1924
113th Wettest
Wettest since:
1983
Sep 1938–Aug 1939
12-Month
15.70"
(398.78mm)
22.44"
(569.98mm)
-6.74"
(-171.20mm)
14th Driest
Driest since:
2021
114th Wettest
Wettest since:
1983
Mar 1938–Aug 1939
18-Month
26.61"
(675.89mm)
28.96"
(735.58mm)
-2.35"
(-59.69mm)
51st Driest
Driest since:
1977
77th Wettest
Wettest since:
1983
Sep 1937–Aug 1939
24-Month
49.04"
(1,245.62mm)
44.90"
(1,140.46mm)
4.14"
(105.16mm)
91st Driest
Driest since:
1977
36th Wettest
Wettest since:
1983
Sep 1936–Aug 1939
36-Month
72.25"
(1,835.15mm)
67.31"
(1,709.67mm)
4.94"
(125.48mm)
87th Driest
Driest since:
2022
39th Wettest
Wettest since:
1984
Sep 1935–Aug 1939
48-Month
95.38"
(2,422.65mm)
89.50"
(2,273.30mm)
5.88"
(149.35mm)
88th Driest
Driest since:
2015
37th Wettest
Wettest since:
1998
Sep 1934–Aug 1939
60-Month
120.42"
(3,058.67mm)
111.68"
(2,836.67mm)
8.74"
(222.00mm)
95th Driest
Driest since:
1991
29th Wettest
Wettest since:
1999

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