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 2017

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 2017
1-Month
3.00"
(76.20mm)
4.63"
(117.60mm)
-1.63"
(-41.40mm)
21st Driest Driest since: 2013 1976
107th Wettest Wettest since: 2016 1964
Nov–Dec 2017
2-Month
8.61"
(218.69mm)
8.97"
(227.84mm)
-0.36"
(-9.15mm)
59th Driest Driest since: 2016 1976
69th Wettest Wettest since: 2015 1996
Oct–Dec 2017
3-Month
11.76"
(298.70mm)
11.51"
(292.35mm)
0.25"
(6.35mm)
65th Driest Driest since: 2013 1976
63rd Wettest Wettest since: 2016 1996
Sep–Dec 2017
4-Month
13.37"
(339.60mm)
12.93"
(328.42mm)
0.44"
(11.18mm)
68th Driest Driest since: 2013 1976
60th Wettest Wettest since: 2016 1996
Aug–Dec 2017
5-Month
13.61"
(345.69mm)
13.73"
(348.74mm)
-0.12"
(-3.05mm)
64th Driest Driest since: 2013 1936
64th Wettest Wettest since: 2016 1996
Jul–Dec 2017
6-Month
13.76"
(349.50mm)
14.46"
(367.28mm)
-0.70"
(-17.78mm)
57th Driest Driest since: 2013 1936
71st Wettest Wettest since: 2016 1996
Jun–Dec 2017
7-Month
15.29"
(388.37mm)
16.18"
(410.97mm)
-0.89"
(-22.60mm)
58th Driest Driest since: 2013 1976
70th Wettest Wettest since: 2016 1996
May–Dec 2017
8-Month
17.11"
(434.59mm)
18.32"
(465.33mm)
-1.21"
(-30.74mm)
49th Driest Driest since: 2013 1935
79th Wettest Wettest since: 2016 1996
Apr–Dec 2017
9-Month
20.95"
(532.13mm)
20.67"
(525.02mm)
0.28"
(7.11mm)
71st Driest Driest since: 2013 1976
57th Wettest Wettest since: 2016 1996
Ties: 1994
Mar–Dec 2017
10-Month
26.93"
(684.02mm)
23.93"
(607.82mm)
3.00"
(76.20mm)
99th Driest Driest since: 2015 1976
29th Wettest Wettest since: 2016 1996
Feb–Dec 2017
11-Month
33.07"
(839.98mm)
27.54"
(699.52mm)
5.53"
(140.46mm)
113th Driest Driest since: 2016 1935
15th Wettest Wettest since: 2014 1996
Jan–Dec 2017
12-Month
37.14"
(943.36mm)
32.07"
(814.58mm)
5.07"
(128.78mm)
113th Driest Driest since: 2016 1929
15th Wettest Wettest since: 2012 1996
Jul 2016–Dec 2017
18-Month
55.09"
(1,399.29mm)
46.58"
(1,183.13mm)
8.51"
(216.16mm)
120th Driest Driest since: 2016 1929
7th Wettest Wettest since: 1997 1996
Jan 2016–Dec 2017
24-Month
72.45"
(1,840.23mm)
64.19"
(1,630.43mm)
8.26"
(209.80mm)
115th Driest Driest since: 2016 1930
12th Wettest Wettest since: 1999 1996
Jan 2015–Dec 2017
36-Month
103.59"
(2,631.19mm)
96.33"
(2,446.78mm)
7.26"
(184.41mm)
109th Driest Driest since: 2016 1930
17th Wettest Wettest since: 2012 1997
Jan 2014–Dec 2017
48-Month
139.57"
(3,545.08mm)
128.33"
(3,259.58mm)
11.24"
(285.50mm)
113th Driest Driest since: 2016 1931
12th Wettest Wettest since: 1999 1998
Jan 2013–Dec 2017
60-Month
164.08"
(4,167.63mm)
160.34"
(4,072.64mm)
3.74"
(94.99mm)
84th Driest Driest since: 2015 1932
40th Wettest Wettest since: 2016 1999

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Regional Time Series, published May 2022, retrieved on May 26, 2022 from https://www.ncdc.noaa.gov/cag/