Climate at a Glance

National 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.


Contiguous U.S.

Precipitation Rankings, May 2018

View Period (Months):All1234567891011121824364860
Download: xml csv json
  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
May 2018
1-Month
3.02"
(76.71mm)
2.91"
(73.91mm)
0.11"
(2.80mm)
77th Driest Driest since: 2014 1934
52nd Wettest Wettest since: 2017 2019
Apr–May 2018
2-Month
5.48"
(139.19mm)
5.43"
(137.92mm)
0.05"
(1.27mm)
70th Driest Driest since: 2012 1934
59th Wettest Wettest since: 2017 1957
Mar–May 2018
3-Month
7.96"
(202.18mm)
7.94"
(201.68mm)
0.02"
(0.50mm)
66th Driest Driest since: 2012 1925
63rd Wettest Wettest since: 2017 1957, 1991
Ties: 1896, 1989
Feb–May 2018
4-Month
10.85"
(275.59mm)
10.07"
(255.78mm)
0.78"
(19.81mm)
95th Driest Driest since: 2014 1925
34th Wettest Wettest since: 2017 2019
Ties: 1948
Jan–May 2018
5-Month
12.70"
(322.58mm)
12.39"
(314.71mm)
0.31"
(7.87mm)
81st Driest Driest since: 2014 1934
48th Wettest Wettest since: 2017 2019
Dec 2017–May 2018
6-Month
14.29"
(362.97mm)
14.73"
(374.14mm)
-0.44"
(-11.17mm)
49th Driest Driest since: 2014 1931
79th Wettest Wettest since: 2017 2019
Nov 2017–May 2018
7-Month
15.91"
(404.11mm)
16.96"
(430.78mm)
-1.05"
(-26.67mm)
35th Driest Driest since: 2006 1934
93rd Wettest Wettest since: 2017 1983
Oct 2017–May 2018
8-Month
18.51"
(470.15mm)
19.13"
(485.90mm)
-0.62"
(-15.75mm)
43rd Driest Driest since: 2014 1934
85th Wettest Wettest since: 2017 2019
Sep 2017–May 2018
9-Month
20.78"
(527.81mm)
21.62"
(549.15mm)
-0.84"
(-21.34mm)
38th Driest Driest since: 2006 1934
90th Wettest Wettest since: 2017 2019
Aug 2017–May 2018
10-Month
24.20"
(614.68mm)
24.25"
(615.95mm)
-0.05"
(-1.27mm)
62nd Driest Driest since: 2014 1918
66th Wettest Wettest since: 2017 2019
Jul 2017–May 2018
11-Month
27.00"
(685.80mm)
27.03"
(686.56mm)
-0.03"
(-0.76mm)
62nd Driest Driest since: 2013 1931
66th Wettest Wettest since: 2017 2019
Jun 2017–May 2018
12-Month
30.07"
(763.78mm)
29.95"
(760.73mm)
0.12"
(3.05mm)
61st Driest Driest since: 2013 1934
67th Wettest Wettest since: 2017 2019
Dec 2016–May 2018
18-Month
47.73"
(1,212.34mm)
44.70"
(1,135.38mm)
3.03"
(76.96mm)
103rd Driest Driest since: 2015 1931
24th Wettest Wettest since: 2017 2019
Jun 2016–May 2018
24-Month
63.47"
(1,612.14mm)
59.92"
(1,521.97mm)
3.55"
(90.17mm)
104th Driest Driest since: 2015 1931
23rd Wettest Wettest since: 2017 2020
Jun 2015–May 2018
36-Month
98.05"
(2,490.47mm)
89.88"
(2,282.95mm)
8.17"
(207.52mm)
115th Driest Driest since: 2016 1955
11th Wettest Wettest since: 2017 2019
Jun 2014–May 2018
48-Month
130.19"
(3,306.83mm)
119.78"
(3,042.41mm)
10.41"
(264.42mm)
117th Driest Driest since: 2016 1956
8th Wettest Wettest since: 2017 2019
Jun 2013–May 2018
60-Month
160.57"
(4,078.48mm)
149.64"
(3,800.86mm)
10.93"
(277.62mm)
116th Driest Driest since: 2017 1957
8th Wettest Wettest since: 1999 2020

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: National Time Series, Precipitation, published September 2022, retrieved on September 25, 2022 from https://www.ncdc.noaa.gov/cag/