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, September 1939

View Period (Months):All1234567891011121824364860
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Wettest/Driest
Since
Record
September 1939
1-Month
0.91"
(23.11mm)
1.42"
(36.07mm)
-0.51"
(-12.96mm)
31st Driest Driest since: 1938 1975
97th Wettest Wettest since: 1937 2013
Aug–Sep 1939
2-Month
1.28"
(32.51mm)
2.22"
(56.39mm)
-0.94"
(-23.88mm)
19th Driest Driest since: 1938 2012
109th Wettest Wettest since: 1937 2013
Ties: 2006
Jul–Sep 1939
3-Month
2.02"
(51.31mm)
2.95"
(74.93mm)
-0.93"
(-23.62mm)
28th Driest Driest since: 1935 1929
100th Wettest Wettest since: 1938 1978
Jun–Sep 1939
4-Month
3.41"
(86.61mm)
4.67"
(118.62mm)
-1.26"
(-32.01mm)
25th Driest Driest since: 1938 2003
103rd Wettest Wettest since: 1937 1941
Ties: 1988
May–Sep 1939
5-Month
4.73"
(120.14mm)
6.81"
(172.97mm)
-2.08"
(-52.83mm)
14th Driest Driest since: 1938 1928
114th Wettest Wettest since: 1937 1941
Apr–Sep 1939
6-Month
5.52"
(140.21mm)
9.17"
(232.92mm)
-3.65"
(-92.71mm)
2nd Driest Driest since: 1924 1924
126th Wettest Wettest since: 1938 1948
Mar–Sep 1939
7-Month
7.94"
(201.68mm)
12.43"
(315.72mm)
-4.49"
(-114.04mm)
3rd Driest Driest since: 1924 1924
125th Wettest Wettest since: 1938 1948
Feb–Sep 1939
8-Month
11.75"
(298.45mm)
16.04"
(407.42mm)
-4.29"
(-108.97mm)
6th Driest Driest since: 1935 1924
122nd Wettest Wettest since: 1938 1983
Jan–Sep 1939
9-Month
15.49"
(393.45mm)
20.57"
(522.48mm)
-5.08"
(-129.03mm)
6th Driest Driest since: 1929 1924
122nd Wettest Wettest since: 1938 1983
Dec 1938–Sep 1939
10-Month
18.68"
(474.47mm)
25.21"
(640.33mm)
-6.53"
(-165.86mm)
6th Driest Driest since: 1929 2001
121st Wettest Wettest since: 1938 1997
Nov 1938–Sep 1939
11-Month
22.15"
(562.61mm)
29.56"
(750.82mm)
-7.41"
(-188.21mm)
8th Driest Driest since: 1931 2001
119th Wettest Wettest since: 1938 1997
Oct 1938–Sep 1939
12-Month
25.35"
(643.89mm)
32.12"
(815.85mm)
-6.77"
(-171.96mm)
11th Driest Driest since: 1931 1977
116th Wettest Wettest since: 1938 1997
Apr 1938–Sep 1939
18-Month
32.19"
(817.63mm)
41.30"
(1,049.02mm)
-9.11"
(-231.39mm)
5th Driest Driest since: 1931 1929, 2001
122nd Wettest Wettest since: 1938 1997
Oct 1937–Sep 1939
24-Month
61.01"
(1,549.65mm)
64.26"
(1,632.20mm)
-3.25"
(-82.55mm)
38th Driest Driest since: 1937 1930
88th Wettest Wettest since: 1938 1997
Oct 1936–Sep 1939
36-Month
88.23"
(2,241.04mm)
96.34"
(2,447.04mm)
-8.11"
(-206.00mm)
16th Driest Driest since: 1937 1931
109th Wettest Wettest since: 1938 1997
Oct 1935–Sep 1939
48-Month
118.13"
(3,000.50mm)
128.40"
(3,261.36mm)
-10.27"
(-260.86mm)
16th Driest Driest since: 1937 1931
108th Wettest Wettest since: 1938 1998
Oct 1934–Sep 1939
60-Month
148.72"
(3,777.49mm)
160.37"
(4,073.40mm)
-11.65"
(-295.91mm)
15th Driest Driest since: 1934 1932
108th Wettest Wettest since: 1938 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/