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 August 2020. For more information, please see Climatological Rankings.


Northwest Climate Region

Precipitation Rankings, May 2019

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 2019
1-Month
2.45"
(62.23mm)
2.14"
(54.36mm)
0.31"
(7.87mm)
85th Driest Driest since: 2018 1924
42nd Wettest Wettest since: 2011 1998
Apr–May 2019
2-Month
6.34"
(161.04mm)
4.50"
(114.30mm)
1.84"
(46.74mm)
116th Driest Driest since: 2018 1924
11th Wettest Wettest since: 2011 1996
Mar–May 2019
3-Month
8.00"
(203.20mm)
7.76"
(197.10mm)
0.24"
(6.10mm)
68th Driest Driest since: 2015 1924
59th Wettest Wettest since: 2018 2011
Ties: 1967, 1982
Feb–May 2019
4-Month
13.31"
(338.07mm)
11.37"
(288.80mm)
1.94"
(49.27mm)
100th Driest Driest since: 2018 1924
27th Wettest Wettest since: 2017 1904
Jan–May 2019
5-Month
16.65"
(422.91mm)
15.90"
(403.86mm)
0.75"
(19.05mm)
76th Driest Driest since: 2018 1924
51st Wettest Wettest since: 2017 1904
Dec 2018–May 2019
6-Month
21.09"
(535.69mm)
20.54"
(521.72mm)
0.55"
(13.97mm)
77th Driest Driest since: 2018 1977
49th Wettest Wettest since: 2017 1997
Nov 2018–May 2019
7-Month
24.37"
(619.00mm)
24.89"
(632.21mm)
-0.52"
(-13.21mm)
57th Driest Driest since: 2015 1977
69th Wettest Wettest since: 2018 1974
Oct 2018–May 2019
8-Month
26.85"
(681.99mm)
27.45"
(697.23mm)
-0.60"
(-15.24mm)
55th Driest Driest since: 2015 1977
71st Wettest Wettest since: 2018 1974
Sep 2018–May 2019
9-Month
27.46"
(697.48mm)
28.87"
(733.30mm)
-1.41"
(-35.82mm)
39th Driest Driest since: 2015 1977
87th Wettest Wettest since: 2018 1974
Ties: 1906, 2000
Aug 2018–May 2019
10-Month
27.80"
(706.12mm)
29.68"
(753.87mm)
-1.88"
(-47.75mm)
35th Driest Driest since: 2013 1977
91st Wettest Wettest since: 2018 1974
Jul 2018–May 2019
11-Month
27.91"
(708.91mm)
30.40"
(772.16mm)
-2.49"
(-63.25mm)
28th Driest Driest since: 2009 1977
98th Wettest Wettest since: 2018 1974
Jun 2018–May 2019
12-Month
29.27"
(743.46mm)
32.13"
(816.10mm)
-2.86"
(-72.64mm)
28th Driest Driest since: 2009 1977
98th Wettest Wettest since: 2018 1996
Dec 2017–May 2019
18-Month
48.21"
(1,224.53mm)
52.65"
(1,337.31mm)
-4.44"
(-112.78mm)
26th Driest Driest since: 2002 1930
99th Wettest Wettest since: 2018 1997
Jun 2017–May 2019
24-Month
60.50"
(1,536.70mm)
64.28"
(1,632.71mm)
-3.78"
(-96.01mm)
33rd Driest Driest since: 2010 1930
92nd Wettest Wettest since: 2018 1997
Jun 2016–May 2019
36-Month
101.47"
(2,577.34mm)
96.36"
(2,447.54mm)
5.11"
(129.80mm)
95th Driest Driest since: 2016 1931
29th Wettest Wettest since: 2018 1998
Jun 2015–May 2019
48-Month
136.34"
(3,463.04mm)
128.40"
(3,261.36mm)
7.94"
(201.68mm)
105th Driest Driest since: 2016 1931
18th Wettest Wettest since: 2018 1999
Jun 2014–May 2019
60-Month
166.65"
(4,232.91mm)
160.37"
(4,073.40mm)
6.28"
(159.51mm)
91st Driest Driest since: 2016 1933
31st Wettest Wettest since: 2018 1999

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Regional Time Series, published September 2020, retrieved on September 27, 2020 from https://www.ncdc.noaa.gov/cag/