Climate at a Glance

Statewide 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 September 2020. For more information, please see Climatological Rankings.


Washington

Precipitation Rankings, September 2020

View Period (Months):All1234567891011121824364860
Download: xml csv json
  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Wettest/Driest
Since
Record
September 2020
1-Month
2.41"
(61.21mm)
1.95"
(49.53mm)
0.46"
(11.68mm)
87th Driest Driest since: 2018 1975
40th Wettest Wettest since: 2019 2013
Aug–Sep 2020
2-Month
2.97"
(75.44mm)
2.97"
(75.44mm)
0.00"
(0.00mm)
71st Driest Driest since: 2018 2012
56th Wettest Wettest since: 2019 2013
Jul–Sep 2020
3-Month
3.37"
(85.60mm)
3.87"
(98.30mm)
-0.50"
(-12.70mm)
56th Driest Driest since: 2018 1929
71st Wettest Wettest since: 2019 1920, 1978
Jun–Sep 2020
4-Month
5.76"
(146.30mm)
5.76"
(146.30mm)
0.00"
(0.00mm)
72nd Driest Driest since: 2018 2003
55th Wettest Wettest since: 2019 1948
Ties: 1926, 2014
May–Sep 2020
5-Month
9.26"
(235.20mm)
8.00"
(203.20mm)
1.26"
(32.00mm)
96th Driest Driest since: 2019 2003
31st Wettest Wettest since: 2013 1948
Apr–Sep 2020
6-Month
10.64"
(270.26mm)
10.83"
(275.08mm)
-0.19"
(-4.82mm)
61st Driest Driest since: 2018 1938
66th Wettest Wettest since: 2019 1948
Mar–Sep 2020
7-Month
13.48"
(342.39mm)
14.98"
(380.49mm)
-1.50"
(-38.10mm)
39th Driest Driest since: 2019 1924
88th Wettest Wettest since: 2017 1997
Feb–Sep 2020
8-Month
18.42"
(467.87mm)
19.72"
(500.89mm)
-1.30"
(-33.02mm)
49th Driest Driest since: 2019 1973
78th Wettest Wettest since: 2017 1948
Jan–Sep 2020
9-Month
28.93"
(734.82mm)
25.78"
(654.81mm)
3.15"
(80.01mm)
100th Driest Driest since: 2019 1929
27th Wettest Wettest since: 2017 1972
Dec 2019–Sep 2020
10-Month
34.52"
(876.81mm)
32.30"
(820.42mm)
2.22"
(56.39mm)
85th Driest Driest since: 2019 1929
41st Wettest Wettest since: 2017 1997
Nov 2019–Sep 2020
11-Month
36.38"
(924.05mm)
38.43"
(976.12mm)
-2.05"
(-52.07mm)
48th Driest Driest since: 2019 1929
78th Wettest Wettest since: 2018 1997
Oct 2019–Sep 2020
12-Month
40.16"
(1,020.06mm)
42.12"
(1,069.85mm)
-1.96"
(-49.79mm)
50th Driest Driest since: 2019 1977
76th Wettest Wettest since: 2018 1997
Apr 2019–Sep 2020
18-Month
51.99"
(1,320.55mm)
52.97"
(1,345.44mm)
-0.98"
(-24.89mm)
59th Driest Driest since: 2019 1929
67th Wettest Wettest since: 2018 1997
Ties: 1928
Oct 2018–Sep 2020
24-Month
77.88"
(1,978.15mm)
84.27"
(2,140.46mm)
-6.39"
(-162.31mm)
31st Driest Driest since: 2015 1930
94th Wettest Wettest since: 2019 1997
Oct 2017–Sep 2020
36-Month
122.33"
(3,107.18mm)
126.34"
(3,209.04mm)
-4.01"
(-101.86mm)
41st Driest Driest since: 2005 1931
83rd Wettest Wettest since: 2019 1997
Oct 2016–Sep 2020
48-Month
174.14"
(4,423.16mm)
168.46"
(4,278.88mm)
5.68"
(144.28mm)
79th Driest Driest since: 2015 1931
44th Wettest Wettest since: 2019 1999
Oct 2015–Sep 2020
60-Month
223.81"
(5,684.77mm)
210.45"
(5,345.43mm)
13.36"
(339.34mm)
96th Driest Driest since: 2019 1930
26th Wettest Wettest since: 2017 1999

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published October 2020, retrieved on October 23, 2020 from https://www.ncdc.noaa.gov/cag/