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 2018

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 2018
1-Month
0.04"
(1.02mm)
0.24"
(6.10mm)
-0.20"
(-5.08mm)
10th Driest
Driest since:
1937, 2002
119th Wettest
Wettest since:
1983
Ties: 1980, 1987
Jul–Aug 2018
2-Month
0.26"
(6.60mm)
0.42"
(10.67mm)
-0.16"
(-4.07mm)
33rd Driest
Driest since:
1940
96th Wettest
Wettest since:
1983
Ties: 1996, 2008
Jun–Aug 2018
3-Month
0.33"
(8.38mm)
0.77"
(19.56mm)
-0.44"
(-11.18mm)
16th Driest
Driest since:
2002
113th Wettest
Wettest since:
1913
Ties: 2004
May–Aug 2018
4-Month
0.99"
(25.15mm)
1.65"
(41.91mm)
-0.66"
(-16.76mm)
22nd Driest
Driest since:
1924
107th Wettest
Wettest since:
1998
Apr–Aug 2018
5-Month
3.12"
(79.25mm)
3.28"
(83.31mm)
-0.16"
(-4.06mm)
71st Driest
Driest since:
2021
58th Wettest
Wettest since:
1896
Mar–Aug 2018
6-Month
8.24"
(209.30mm)
6.50"
(165.10mm)
1.74"
(44.20mm)
103rd Driest
Driest since:
2008
26th Wettest
Wettest since:
1995
Feb–Aug 2018
7-Month
8.81"
(223.77mm)
10.35"
(262.89mm)
-1.54"
(-39.12mm)
58th Driest
Driest since:
1997, 2021
71st Wettest
Wettest since:
1998
Jan–Aug 2018
8-Month
12.14"
(308.36mm)
14.60"
(370.84mm)
-2.46"
(-62.48mm)
51st Driest
Driest since:
2022
78th Wettest
Wettest since:
1995
Dec 2017–Aug 2018
9-Month
12.44"
(315.98mm)
18.22"
(462.79mm)
-5.78"
(-146.81mm)
18th Driest
Driest since:
1924
110th Wettest
Wettest since:
1998
Ties: 2002
Nov 2017–Aug 2018
10-Month
15.42"
(391.67mm)
20.80"
(528.32mm)
-5.38"
(-136.65mm)
26th Driest
Driest since:
1924
102nd Wettest
Wettest since:
1983
Oct 2017–Aug 2018
11-Month
15.76"
(400.30mm)
22.00"
(558.80mm)
-6.24"
(-158.50mm)
20th Driest
Driest since:
1924
108th Wettest
Wettest since:
1983
Sep 2017–Aug 2018
12-Month
16.19"
(411.23mm)
22.44"
(569.98mm)
-6.25"
(-158.75mm)
20th Driest
Driest since:
2021
108th Wettest
Wettest since:
1983
Mar 2017–Aug 2018
18-Month
22.45"
(570.23mm)
28.96"
(735.58mm)
-6.51"
(-165.35mm)
23rd Driest
Driest since:
1977
105th Wettest
Wettest since:
1983
Sep 2016–Aug 2018
24-Month
50.88"
(1,292.35mm)
44.90"
(1,140.46mm)
5.98"
(151.89mm)
102nd Driest
Driest since:
1977
25th Wettest
Wettest since:
1983
Sep 2015–Aug 2018
36-Month
73.83"
(1,875.28mm)
67.31"
(1,709.67mm)
6.52"
(165.61mm)
94th Driest
Driest since:
2022
32nd Wettest
Wettest since:
1984
Ties: 1954
Sep 2014–Aug 2018
48-Month
91.00"
(2,311.40mm)
89.50"
(2,273.30mm)
1.50"
(38.10mm)
75th Driest
Driest since:
2015
50th Wettest
Wettest since:
1998
Sep 2013–Aug 2018
60-Month
103.44"
(2,627.38mm)
111.68"
(2,836.67mm)
-8.24"
(-209.29mm)
43rd Driest
Driest since:
1991
81st Wettest
Wettest since:
1999

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