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 July 2020. For more information, please see Climatological Rankings.


Contiguous U.S.

Precipitation Rankings, May 2020

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 2020
1-Month
3.07"
(77.98mm)
2.91"
(73.91mm)
0.16"
(4.07mm)
81st Driest Driest since: 2018 1934
46th Wettest Wettest since: 2019 2019
Ties: 1974, 2016
Apr–May 2020
2-Month
5.59"
(141.99mm)
5.43"
(137.92mm)
0.16"
(4.07mm)
75th Driest Driest since: 2018 1934
52nd Wettest Wettest since: 2019 1957
Mar–May 2020
3-Month
8.45"
(214.63mm)
7.94"
(201.68mm)
0.51"
(12.95mm)
94th Driest Driest since: 2018 1925
33rd Wettest Wettest since: 2019 1957, 1991
Ties: 1982
Feb–May 2020
4-Month
10.89"
(276.61mm)
10.07"
(255.78mm)
0.82"
(20.83mm)
97th Driest Driest since: 2018 1925
30th Wettest Wettest since: 2019 2019
Ties: 1935, 1953, 1993
Jan–May 2020
5-Month
13.64"
(346.46mm)
12.39"
(314.71mm)
1.25"
(31.75mm)
110th Driest Driest since: 2018 1934
17th Wettest Wettest since: 2019 2019
Dec 2019–May 2020
6-Month
16.21"
(411.73mm)
14.73"
(374.14mm)
1.48"
(37.59mm)
108th Driest Driest since: 2018 1931
18th Wettest Wettest since: 2019 2019
Nov 2019–May 2020
7-Month
18.15"
(461.01mm)
16.96"
(430.78mm)
1.19"
(30.23mm)
98th Driest Driest since: 2018 1934
28th Wettest Wettest since: 2019 1983
Oct 2019–May 2020
8-Month
21.34"
(542.04mm)
19.13"
(485.90mm)
2.21"
(56.14mm)
112th Driest Driest since: 2018 1934
14th Wettest Wettest since: 2019 2019
Sep 2019–May 2020
9-Month
23.79"
(604.27mm)
21.62"
(549.15mm)
2.17"
(55.12mm)
106th Driest Driest since: 2018 1934
20th Wettest Wettest since: 2019 2019
Aug 2019–May 2020
10-Month
26.57"
(674.88mm)
24.25"
(615.95mm)
2.32"
(58.93mm)
107th Driest Driest since: 2018 1918
19th Wettest Wettest since: 2019 2019
Jul 2019–May 2020
11-Month
29.33"
(744.98mm)
27.03"
(686.56mm)
2.30"
(58.42mm)
106th Driest Driest since: 2018 1931
20th Wettest Wettest since: 2019 2019
Jun 2019–May 2020
12-Month
32.70"
(830.58mm)
29.95"
(760.73mm)
2.75"
(69.85mm)
109th Driest Driest since: 2018 1934
17th Wettest Wettest since: 2019 2019
Dec 2018–May 2020
18-Month
51.71"
(1,313.43mm)
44.70"
(1,135.38mm)
7.01"
(178.05mm)
123rd Driest Driest since: 2018 1931
2nd Wettest Wettest since: 2019 2019
Jun 2018–May 2020
24-Month
70.41"
(1,788.41mm)
59.92"
(1,521.97mm)
10.49"
(266.44mm)
124th Driest Driest since: 2019 1931
1st Wettest Wettest to Date 2020
Jun 2017–May 2020
36-Month
100.48"
(2,552.19mm)
89.88"
(2,282.95mm)
10.60"
(269.24mm)
122nd Driest Driest since: 2018 1955
2nd Wettest Wettest since: 2019 2019
Jun 2016–May 2020
48-Month
133.88"
(3,400.55mm)
119.78"
(3,042.41mm)
14.10"
(358.14mm)
121st Driest Driest since: 2018 1956
2nd Wettest Wettest since: 2019 2019
Jun 2015–May 2020
60-Month
168.46"
(4,278.88mm)
149.64"
(3,800.86mm)
18.82"
(478.02mm)
121st Driest Driest since: 2019 1957
1st Wettest Wettest to Date 2020

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: National Time Series, published August 2020, retrieved on August 14, 2020 from https://www.ncdc.noaa.gov/cag/