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 1895. For more information, please see Climatological Rankings.


Contiguous U.S.

Precipitation Rankings, May 2018

View Period (Months):All1234567891011121824364860
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  • Record Wettest
Period Value 1901-2000
Mean
Amomaly Rank
(1895-2018)
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
49ᵗʰ Wettest Wettest since: 2017 2015
Apr–May 2018
2-Month
5.49"
(139.45mm)
5.43"
(137.92mm)
0.06"
(1.53mm)
69ᵗʰ Driest Driest since: 2012 1934
56ᵗʰ Wettest Wettest since: 2017 1957
Mar–May 2018
3-Month
7.97"
(202.44mm)
7.94"
(201.68mm)
0.03"
(0.76mm)
67ᵗʰ Driest Driest since: 2013 1925
58ᵗʰ Wettest Wettest since: 2017 1957, 1991
Ties: 1999, 2013
Feb–May 2018
4-Month
10.86"
(275.84mm)
10.07"
(255.78mm)
0.79"
(20.06mm)
93ʳᵈ Driest Driest since: 2014 1925
32ⁿᵈ Wettest Wettest since: 2017 1983
Jan–May 2018
5-Month
12.72"
(323.09mm)
12.39"
(314.71mm)
0.33"
(8.38mm)
79ᵗʰ Driest Driest since: 2014 1934
46ᵗʰ Wettest Wettest since: 2017 1983
Dec 2017–May 2018
6-Month
14.32"
(363.73mm)
14.73"
(374.14mm)
-0.41"
(-10.41mm)
48ᵗʰ Driest Driest since: 2014 1931
76ᵗʰ Wettest Wettest since: 2017 1983
Ties: 1940
Nov 2017–May 2018
7-Month
15.94"
(404.88mm)
16.96"
(430.78mm)
-1.02"
(-25.90mm)
35ᵗʰ Driest Driest since: 2014 1934
89ᵗʰ Wettest Wettest since: 2017 1983
Ties: 1913
Oct 2017–May 2018
8-Month
18.54"
(470.92mm)
19.13"
(485.90mm)
-0.59"
(-14.98mm)
41ˢᵗ Driest Driest since: 2014 1934
83ʳᵈ Wettest Wettest since: 2017 1983
Sep 2017–May 2018
9-Month
20.81"
(528.57mm)
21.62"
(549.15mm)
-0.81"
(-20.58mm)
39ᵗʰ Driest Driest since: 2006 1934
85ᵗʰ Wettest Wettest since: 2017 1983
Aug 2017–May 2018
10-Month
24.22"
(615.19mm)
24.25"
(615.95mm)
-0.03"
(-0.76mm)
60ᵗʰ Driest Driest since: 2014 1918
64ᵗʰ Wettest Wettest since: 2017 1983
Jul 2017–May 2018
11-Month
27.02"
(686.31mm)
27.03"
(686.56mm)
-0.01"
(-0.25mm)
61ˢᵗ Driest Driest since: 2013 1931
63ʳᵈ Wettest Wettest since: 2017 1983
Jun 2017–May 2018
12-Month
30.08"
(764.03mm)
29.95"
(760.73mm)
0.13"
(3.30mm)
60ᵗʰ Driest Driest since: 2013 1934
64ᵗʰ Wettest Wettest since: 2017 1983
Ties: 1968, 2007
Dec 2016–May 2018
18-Month
47.69"
(1,211.33mm)
44.70"
(1,135.38mm)
2.99"
(75.95mm)
100ᵗʰ Driest Driest since: 2015 1931
23ʳᵈ Wettest Wettest since: 2017 1983
Ties: 1942
Jun 2016–May 2018
24-Month
63.43"
(1,611.12mm)
59.92"
(1,521.97mm)
3.51"
(89.15mm)
102ⁿᵈ Driest Driest since: 2015 1931
21ˢᵗ Wettest Wettest since: 2017 1974
Ties: 2010
Jun 2015–May 2018
36-Month
98.01"
(2,489.45mm)
89.88"
(2,282.95mm)
8.13"
(206.50mm)
114ᵗʰ Driest Driest since: 2016 1955
8ᵗʰ Wettest Wettest since: 2017 1975
Jun 2014–May 2018
48-Month
130.15"
(3,305.81mm)
119.78"
(3,042.41mm)
10.37"
(263.40mm)
115ᵗʰ Driest Driest since: 2016 1956
6ᵗʰ Wettest Wettest since: 2017 1998
Jun 2013–May 2018
60-Month
160.53"
(4,077.46mm)
149.64"
(3,800.86mm)
10.89"
(276.60mm)
115ᵗʰ Driest Driest since: 2017 1957
5ᵗʰ Wettest Wettest since: 1999 1999

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: National Time Series, published September 2018, retrieved on September 23, 2018 from https://www.ncdc.noaa.gov/cag/