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 2022. For more information, please see Climatological Rankings.


Northwest Climate Region

Precipitation Rankings, December 2009

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 2009
1-Month
2.85"
(72.39mm)
4.63"
(117.60mm)
-1.78"
(-45.21mm)
18th Driest Driest since: 2000 1976
110th Wettest Wettest since: 2008 1964
Nov–Dec 2009
2-Month
6.90"
(175.26mm)
8.97"
(227.84mm)
-2.07"
(-52.58mm)
29th Driest Driest since: 2004 1976
99th Wettest Wettest since: 2008 1996
Ties: 1947, 1986
Oct–Dec 2009
3-Month
10.40"
(264.16mm)
11.51"
(292.35mm)
-1.11"
(-28.19mm)
47th Driest Driest since: 2004 1976
81st Wettest Wettest since: 2008 1996
Sep–Dec 2009
4-Month
11.17"
(283.72mm)
12.93"
(328.42mm)
-1.76"
(-44.70mm)
36th Driest Driest since: 2004 1976
92nd Wettest Wettest since: 2008 1996
Aug–Dec 2009
5-Month
12.19"
(309.63mm)
13.73"
(348.74mm)
-1.54"
(-39.11mm)
40th Driest Driest since: 2002 1936
88th Wettest Wettest since: 2008 1996
Ties: 1967
Jul–Dec 2009
6-Month
12.68"
(322.07mm)
14.46"
(367.28mm)
-1.78"
(-45.21mm)
38th Driest Driest since: 2002 1936
90th Wettest Wettest since: 2008 1996
Jun–Dec 2009
7-Month
14.98"
(380.49mm)
16.18"
(410.97mm)
-1.20"
(-30.48mm)
52nd Driest Driest since: 2008 1976
76th Wettest Wettest since: 2007 1996
May–Dec 2009
8-Month
17.55"
(445.77mm)
18.32"
(465.33mm)
-0.77"
(-19.56mm)
60th Driest Driest since: 2008 1935
68th Wettest Wettest since: 2006 1996
Apr–Dec 2009
9-Month
19.68"
(499.87mm)
20.67"
(525.02mm)
-0.99"
(-25.15mm)
54th Driest Driest since: 2008 1976
74th Wettest Wettest since: 2006 1996
Mar–Dec 2009
10-Month
23.62"
(599.95mm)
23.93"
(607.82mm)
-0.31"
(-7.87mm)
56th Driest Driest since: 2008 1976
72nd Wettest Wettest since: 2006 1996
Feb–Dec 2009
11-Month
25.60"
(650.24mm)
27.54"
(699.52mm)
-1.94"
(-49.28mm)
45th Driest Driest since: 2008 1935
83rd Wettest Wettest since: 2007 1996
Jan–Dec 2009
12-Month
29.36"
(745.74mm)
32.07"
(814.58mm)
-2.71"
(-68.84mm)
34th Driest Driest since: 2008 1929
94th Wettest Wettest since: 2006 1996
Jul 2008–Dec 2009
18-Month
42.14"
(1,070.36mm)
46.58"
(1,183.13mm)
-4.44"
(-112.77mm)
25th Driest Driest since: 2001 1929
102nd Wettest Wettest since: 2008 1996
Jan 2008–Dec 2009
24-Month
58.13"
(1,476.50mm)
64.19"
(1,630.43mm)
-6.06"
(-153.93mm)
20th Driest Driest since: 2008 1930
107th Wettest Wettest since: 2007 1996
Jan 2007–Dec 2009
36-Month
87.00"
(2,209.80mm)
96.33"
(2,446.78mm)
-9.33"
(-236.98mm)
17th Driest Driest since: 2003 1930
109th Wettest Wettest since: 2008 1997
Jan 2006–Dec 2009
48-Month
123.81"
(3,144.77mm)
128.33"
(3,259.58mm)
-4.52"
(-114.81mm)
39th Driest Driest since: 2005 1931
86th Wettest Wettest since: 2008 1998
Jan 2005–Dec 2009
60-Month
155.61"
(3,952.49mm)
160.34"
(4,072.64mm)
-4.73"
(-120.15mm)
40th Driest Driest since: 2005 1932
84th Wettest Wettest since: 2008 1999

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Regional Time Series, Precipitation, published September 2022, retrieved on October 2, 2022 from https://www.ncdc.noaa.gov/cag/