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.


West Climate Region

Precipitation Rankings, May 1940

View Period (Months):All1234567891011121824364860
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
May 1940
1-Month
0.50"
(12.70mm)
0.92"
(23.37mm)
-0.42"
(-10.67mm)
30th 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)
53rd 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)
67th 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)
111th 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)
113th Driest Driest since: 1939 2022
16th Wettest Wettest since: 1938 1998
Dec 1939–May 1940
6-Month
16.74"
(425.20mm)
12.84"
(326.14mm)
3.90"
(99.06mm)
106th 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)
94th 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)
94th 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)
103rd 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)
102nd 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)
103rd 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)
101st 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)
65th 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)
57th Driest Driest since: 1935 2022
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)
99th Driest Driest since: 1939 2022
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)
101st 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)
98th 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, Precipitation, published September 2022, retrieved on October 2, 2022 from https://www.ncdc.noaa.gov/cag/