Climate at a Glance

Regional Rankings

Look up monthly rankings for 1-12, 18, 24, 36, 48, and 60-month time periods using the options below. Data and statistics are as of January 2021. For more information, please see Climatological Rankings.


West Climate Region

Precipitation Rankings, May 2020

View Period (Months):All1234567891011121824364860
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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Wettest/Driest
Since
Record
May 2020
1-Month
0.96"
(24.38mm)
0.92"
(23.37mm)
0.04"
(1.01mm)
78th Driest Driest since: 2017 1924
49th Wettest Wettest since: 2019 1998
Ties: 1901
Apr–May 2020
2-Month
2.40"
(60.96mm)
2.26"
(57.40mm)
0.14"
(3.56mm)
78th Driest Driest since: 2015 1909
49th Wettest Wettest since: 2019 1896
Mar–May 2020
3-Month
4.80"
(121.92mm)
4.59"
(116.59mm)
0.21"
(5.33mm)
74th Driest Driest since: 2017 2008
53rd Wettest Wettest since: 2019 1995
Ties: 1930
Feb–May 2020
4-Month
5.08"
(129.03mm)
7.31"
(185.67mm)
-2.23"
(-56.64mm)
27th Driest Driest since: 2015 1997
100th Wettest Wettest since: 2019 1998
Jan–May 2020
5-Month
6.58"
(167.13mm)
10.29"
(261.37mm)
-3.71"
(-94.24mm)
19th Driest Driest since: 2015 2013
108th Wettest Wettest since: 2019 1998
Ties: 1898
Dec 2019–May 2020
6-Month
10.05"
(255.27mm)
12.84"
(326.14mm)
-2.79"
(-70.87mm)
33rd Driest Driest since: 2018 1924
93rd Wettest Wettest since: 2019 1995
Nov 2019–May 2020
7-Month
11.40"
(289.56mm)
14.71"
(373.63mm)
-3.31"
(-84.07mm)
30th Driest Driest since: 2015 1977
96th Wettest Wettest since: 2019 1995
Oct 2019–May 2020
8-Month
11.54"
(293.12mm)
15.74"
(399.80mm)
-4.20"
(-106.68mm)
20th Driest Driest since: 2014 1977
106th Wettest Wettest since: 2019 1983
Ties: 1955
Sep 2019–May 2020
9-Month
12.22"
(310.39mm)
16.23"
(412.24mm)
-4.01"
(-101.85mm)
23rd Driest Driest since: 2014 1924
103rd Wettest Wettest since: 2019 1983
Aug 2019–May 2020
10-Month
12.37"
(314.20mm)
16.62"
(422.15mm)
-4.25"
(-107.95mm)
17th Driest Driest since: 2014 1924
109th Wettest Wettest since: 2019 1983
Jul 2019–May 2020
11-Month
12.53"
(318.26mm)
16.95"
(430.53mm)
-4.42"
(-112.27mm)
16th Driest Driest since: 2014 1924
110th Wettest Wettest since: 2019 1983
Jun 2019–May 2020
12-Month
12.71"
(322.83mm)
17.44"
(442.98mm)
-4.73"
(-120.15mm)
12th Driest Driest since: 2014 1924
114th Wettest Wettest since: 2019 1983
Dec 2018–May 2020
18-Month
31.17"
(791.72mm)
30.25"
(768.35mm)
0.92"
(23.37mm)
78th Driest Driest since: 2016 1977
47th Wettest Wettest since: 2019 1983
Jun 2018–May 2020
24-Month
34.69"
(881.13mm)
34.89"
(886.21mm)
-0.20"
(-5.08mm)
65th Driest Driest since: 2016 1977
60th Wettest Wettest since: 2019 1983
Jun 2017–May 2020
36-Month
48.23"
(1,225.04mm)
52.30"
(1,328.42mm)
-4.07"
(-103.38mm)
43rd Driest Driest since: 2016 2014
81st Wettest Wettest since: 2019 1984
Jun 2016–May 2020
48-Month
73.68"
(1,871.47mm)
69.56"
(1,766.82mm)
4.12"
(104.65mm)
90th Driest Driest since: 2018 2015
33rd Wettest Wettest since: 2019 1998
Jun 2015–May 2020
60-Month
92.80"
(2,357.12mm)
86.83"
(2,205.48mm)
5.97"
(151.64mm)
93rd Driest Driest since: 2018 1933
29th Wettest Wettest since: 2019 1999

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Regional Time Series, published February 2021, retrieved on March 3, 2021 from https://www.ncdc.noaa.gov/cag/