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 April 2022. For more information, please see Climatological Rankings.


Northwest Climate Region

Precipitation Rankings, December 2018

View Period (Months):All1234567891011121824364860
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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Wettest/Driest
Since
Record
December 2018
1-Month
4.44"
(112.78mm)
4.63"
(117.60mm)
-0.19"
(-4.82mm)
63rd Driest Driest since: 2017 1976
65th Wettest Wettest since: 2016 1964
Ties: 1932
Nov–Dec 2018
2-Month
7.72"
(196.09mm)
8.97"
(227.84mm)
-1.25"
(-31.75mm)
43rd Driest Driest since: 2013 1976
85th Wettest Wettest since: 2017 1996
Oct–Dec 2018
3-Month
10.20"
(259.08mm)
11.51"
(292.35mm)
-1.31"
(-33.27mm)
42nd Driest Driest since: 2013 1976
86th Wettest Wettest since: 2017 1996
Ties: 1974
Sep–Dec 2018
4-Month
10.81"
(274.57mm)
12.93"
(328.42mm)
-2.12"
(-53.85mm)
31st Driest Driest since: 2013 1976
97th Wettest Wettest since: 2017 1996
Aug–Dec 2018
5-Month
11.15"
(283.21mm)
13.73"
(348.74mm)
-2.58"
(-65.53mm)
28th Driest Driest since: 2013 1936
100th Wettest Wettest since: 2017 1996
Jul–Dec 2018
6-Month
11.26"
(286.00mm)
14.46"
(367.28mm)
-3.20"
(-81.28mm)
18th Driest Driest since: 2013 1936
110th Wettest Wettest since: 2017 1996
Ties: 2013
Jun–Dec 2018
7-Month
12.62"
(320.55mm)
16.18"
(410.97mm)
-3.56"
(-90.42mm)
16th Driest Driest since: 2011 1976
112th Wettest Wettest since: 2017 1996
May–Dec 2018
8-Month
14.25"
(361.95mm)
18.32"
(465.33mm)
-4.07"
(-103.38mm)
13th Driest Driest since: 2002 1935
115th Wettest Wettest since: 2017 1996
Apr–Dec 2018
9-Month
17.87"
(453.90mm)
20.67"
(525.02mm)
-2.80"
(-71.12mm)
27th Driest Driest since: 2013 1976
101st Wettest Wettest since: 2017 1996
Mar–Dec 2018
10-Month
21.03"
(534.16mm)
23.93"
(607.82mm)
-2.90"
(-73.66mm)
32nd Driest Driest since: 2013 1976
96th Wettest Wettest since: 2017 1996
Feb–Dec 2018
11-Month
23.90"
(607.06mm)
27.54"
(699.52mm)
-3.64"
(-92.46mm)
28th Driest Driest since: 2013 1935
100th Wettest Wettest since: 2017 1996
Jan–Dec 2018
12-Month
28.56"
(725.42mm)
32.07"
(814.58mm)
-3.51"
(-89.16mm)
28th Driest Driest since: 2013 1929
100th Wettest Wettest since: 2017 1996
Jul 2017–Dec 2018
18-Month
42.32"
(1,074.93mm)
46.58"
(1,183.13mm)
-4.26"
(-108.20mm)
28th Driest Driest since: 2013 1929
99th Wettest Wettest since: 2017 1996
Jan 2017–Dec 2018
24-Month
65.70"
(1,668.78mm)
64.19"
(1,630.43mm)
1.51"
(38.35mm)
73rd Driest Driest since: 2014 1930
54th Wettest Wettest since: 2017 1996
Jan 2016–Dec 2018
36-Month
101.01"
(2,565.65mm)
96.33"
(2,446.78mm)
4.68"
(118.87mm)
99th Driest Driest since: 2015 1930
27th Wettest Wettest since: 2017 1997
Jan 2015–Dec 2018
48-Month
132.15"
(3,356.61mm)
128.33"
(3,259.58mm)
3.82"
(97.03mm)
92nd Driest Driest since: 2016 1931
33rd Wettest Wettest since: 2017 1998
Jan 2014–Dec 2018
60-Month
168.13"
(4,270.50mm)
160.34"
(4,072.64mm)
7.79"
(197.86mm)
104th Driest Driest since: 2017 1932
20th Wettest Wettest since: 2000 1999

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Regional Time Series, published May 2022, retrieved on May 18, 2022 from https://www.ncdc.noaa.gov/cag/