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 January 2021. 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
(1895-2020)
Wettest/Driest
Since
Record
May 2018
1-Month
3.02"
(76.71mm)
2.91"
(73.91mm)
0.11"
(2.80mm)
76th Driest Driest since: 2014 1934
51st Wettest Wettest since: 2017 2019
Apr–May 2018
2-Month
5.48"
(139.19mm)
5.43"
(137.92mm)
0.05"
(1.27mm)
69th Driest Driest since: 2012 1934
58th Wettest Wettest since: 2017 1957
Mar–May 2018
3-Month
7.96"
(202.18mm)
7.94"
(201.68mm)
0.02"
(0.50mm)
65th Driest Driest since: 2012 1925
62nd 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)
93rd 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)
79th 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)
47th 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)
33rd 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)
41st 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)
36th 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)
60th 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)
61st Driest Driest since: 2013 1931
65th Wettest Wettest since: 2017 2019
Jun 2017–May 2018
12-Month
30.07"
(763.78mm)
29.95"
(760.73mm)
0.12"
(3.05mm)
60th Driest Driest since: 2013 1934
66th 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)
101st 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)
102nd 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)
114th Driest Driest since: 2016 1955
10th 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)
115th 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)
115th Driest Driest since: 2017 1957
7th Wettest Wettest since: 1999 2020

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: National Time Series, published February 2021, retrieved on March 7, 2021 from https://www.ncdc.noaa.gov/cag/