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 May 2021. For more information, please see Climatological Rankings.


Northwest Climate Region

Precipitation Rankings, September 1900

View Period (Months):All1234567891011121824364860
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Wettest/Driest
Since
Record
September 1900
1-Month
1.60"
(40.64mm)
1.42"
(36.07mm)
0.18"
(4.57mm)
84th Driest Driest since: 1899 1975
43rd Wettest Wettest since: 1897 2013
Aug–Sep 1900
2-Month
2.49"
(63.25mm)
2.22"
(56.39mm)
0.27"
(6.86mm)
84th Driest Driest since: 1898 2012
43rd Wettest Wettest since: 1899 2013
Jul–Sep 1900
3-Month
2.81"
(71.37mm)
2.95"
(74.93mm)
-0.14"
(-3.56mm)
67th Driest Driest since: 1898 1929
60th Wettest Wettest since: 1899 1978
Ties: 2015
Jun–Sep 1900
4-Month
4.42"
(112.27mm)
4.67"
(118.62mm)
-0.25"
(-6.35mm)
67th Driest Driest since: 1899 2003
60th Wettest Wettest since: 1897 1941
May–Sep 1900
5-Month
7.10"
(180.34mm)
6.81"
(172.97mm)
0.29"
(7.37mm)
77th Driest Driest since: 1899 1928
50th Wettest Wettest since: 1896 1941
Ties: 1933, 1985
Apr–Sep 1900
6-Month
9.55"
(242.57mm)
9.17"
(232.92mm)
0.38"
(9.65mm)
75th Driest Driest since: 1899 1924
52nd Wettest Wettest since: 1896 1948
Mar–Sep 1900
7-Month
12.49"
(317.25mm)
12.43"
(315.72mm)
0.06"
(1.53mm)
61st Driest Driest since: 1898 1924
66th Wettest Wettest since: 1899 1948
Feb–Sep 1900
8-Month
15.75"
(400.05mm)
16.04"
(407.42mm)
-0.29"
(-7.37mm)
64th Driest Driest since: 1898 1924
63rd Wettest Wettest since: 1899 1983
Jan–Sep 1900
9-Month
19.15"
(486.41mm)
20.57"
(522.48mm)
-1.42"
(-36.07mm)
44th Driest Driest since: 1898 1924
83rd Wettest Wettest since: 1899 1983
Dec 1899–Sep 1900
10-Month
23.49"
(596.65mm)
25.21"
(640.33mm)
-1.72"
(-43.68mm)
37th Driest Driest since: 1898 2001
89th Wettest Wettest since: 1899 1997
Nov 1899–Sep 1900
11-Month
29.32"
(744.73mm)
29.56"
(750.82mm)
-0.24"
(-6.09mm)
60th Driest Driest to Date 2001
66th Wettest Wettest since: 1899 1997
Ties: 2010
Oct 1899–Sep 1900
12-Month
33.21"
(843.53mm)
32.12"
(815.85mm)
1.09"
(27.68mm)
80th Driest Driest since: 1899 1977
46th Wettest Wettest since: 1897 1997
Apr 1899–Sep 1900
18-Month
42.61"
(1,082.29mm)
41.30"
(1,049.02mm)
1.31"
(33.27mm)
78th Driest Driest since: 1899 1929, 2001
48th Wettest Wettest since: 1897 1997
Oct 1898–Sep 1900
24-Month
64.67"
(1,642.62mm)
64.26"
(1,632.20mm)
0.41"
(10.42mm)
68th Driest Driest since: 1899 1930
57th Wettest Wettest since: 1898 1997
Oct 1897–Sep 1900
36-Month
96.08"
(2,440.43mm)
96.34"
(2,447.04mm)
-0.26"
(-6.61mm)
63rd Driest Driest to Date 1931
61st Wettest Wettest since: 1899 1997
Oct 1896–Sep 1900
48-Month
132.90"
(3,375.66mm)
128.40"
(3,261.36mm)
4.50"
(114.30mm)
91st Driest Driest since: 1899 1931
32nd Wettest Wettest to Date 1998
Oct 1895–Sep 1900
60-Month
165.76"
(4,210.30mm)
160.37"
(4,073.40mm)
5.39"
(136.90mm)
87th Driest Driest to Date 1932
35th Wettest Wettest to Date 1999

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Regional Time Series, published June 2021, retrieved on June 18, 2021 from https://www.ncdc.noaa.gov/cag/