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


West Climate Region

Precipitation Rankings, May 1940

View Period (Months):All1234567891011121824364860
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Wettest/Driest
Since
Record
May 1940
1-Month
0.50"
(12.70mm)
0.92"
(23.37mm)
-0.42"
(-10.67mm)
29th Driest Driest since: 1937 1924
99th Wettest Wettest since: 1939 1998
Ties: 1903, 1919, 1928, 1999
Apr–May 1940
2-Month
1.85"
(46.99mm)
2.26"
(57.40mm)
-0.41"
(-10.41mm)
52nd Driest Driest since: 1939 1909
76th Wettest Wettest since: 1938 1896
Mar–May 1940
3-Month
4.41"
(112.01mm)
4.59"
(116.59mm)
-0.18"
(-4.58mm)
66th Driest Driest since: 1939 2008
62nd Wettest Wettest since: 1938 1995
Feb–May 1940
4-Month
9.71"
(246.63mm)
7.31"
(185.67mm)
2.40"
(60.96mm)
110th Driest Driest since: 1939 1997
18th Wettest Wettest since: 1938 1998
Jan–May 1940
5-Month
14.76"
(374.90mm)
10.29"
(261.37mm)
4.47"
(113.53mm)
112th Driest Driest since: 1939 2013
16th Wettest Wettest since: 1938 1998
Dec 1939–May 1940
6-Month
16.74"
(425.20mm)
12.84"
(326.14mm)
3.90"
(99.06mm)
105th Driest Driest since: 1939 1924
22nd Wettest Wettest since: 1938 1995
Nov 1939–May 1940
7-Month
17.13"
(435.10mm)
14.71"
(373.63mm)
2.42"
(61.47mm)
93rd Driest Driest since: 1939 1977
34th Wettest Wettest since: 1938 1995
Oct 1939–May 1940
8-Month
18.26"
(463.80mm)
15.74"
(399.80mm)
2.52"
(64.00mm)
93rd Driest Driest since: 1939 1977
34th Wettest Wettest since: 1938 1983
Sep 1939–May 1940
9-Month
19.46"
(494.28mm)
16.23"
(412.24mm)
3.23"
(82.04mm)
102nd Driest Driest since: 1939 2021
25th Wettest Wettest since: 1938 1983
Ties: 1973
Aug 1939–May 1940
10-Month
19.79"
(502.67mm)
16.62"
(422.15mm)
3.17"
(80.52mm)
101st Driest Driest since: 1939 2021
26th Wettest Wettest since: 1938 1983
Jul 1939–May 1940
11-Month
20.19"
(512.83mm)
16.95"
(430.53mm)
3.24"
(82.30mm)
102nd Driest Driest since: 1939 2021
25th Wettest Wettest since: 1938 1983
Jun 1939–May 1940
12-Month
20.36"
(517.14mm)
17.44"
(442.98mm)
2.92"
(74.16mm)
100th Driest Driest since: 1939 2021
27th Wettest Wettest since: 1938 1983
Dec 1938–May 1940
18-Month
29.58"
(751.33mm)
30.25"
(768.35mm)
-0.67"
(-17.02mm)
64th Driest Driest since: 1935 1977
62nd Wettest Wettest since: 1939 1983
Jun 1938–May 1940
24-Month
33.75"
(857.25mm)
34.89"
(886.21mm)
-1.14"
(-28.96mm)
56th Driest Driest since: 1935 2021
70th Wettest Wettest since: 1939 1983
Jun 1937–May 1940
36-Month
58.61"
(1,488.69mm)
52.30"
(1,328.42mm)
6.31"
(160.27mm)
98th Driest Driest since: 1939 2014
27th Wettest Wettest since: 1938 1984
Jun 1936–May 1940
48-Month
77.49"
(1,968.25mm)
69.56"
(1,766.82mm)
7.93"
(201.43mm)
100th Driest Driest since: 1939 2015
24th Wettest Wettest since: 1938 1998
Jun 1935–May 1940
60-Month
93.92"
(2,385.57mm)
86.83"
(2,205.48mm)
7.09"
(180.09mm)
97th Driest Driest since: 1939 1933
26th Wettest Wettest since: 1911 1999

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Regional Time Series, published November 2021, retrieved on December 8, 2021 from https://www.ncdc.noaa.gov/cag/