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 2021. For more information, please see Climatological Rankings.


Contiguous U.S.

Precipitation Rankings, May 2020

View Period (Months):All1234567891011121824364860
Download: xml csv json
  • Record Driest
  • Bottom 1/10
  • Bottom 1/3
  • Normal
  • Top 1/3
  • Top 1/10
  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Wettest/Driest
Since
Record
May 2020
1-Month
3.09"
(78.49mm)
2.91"
(73.91mm)
0.18"
(4.58mm)
83rd Driest Driest since: 2018 1934
45th Wettest Wettest since: 2019 2019
Ties: 1980
Apr–May 2020
2-Month
5.61"
(142.49mm)
5.43"
(137.92mm)
0.18"
(4.57mm)
77th Driest Driest since: 2018 1934
51st Wettest Wettest since: 2019 1957
Ties: 1919
Mar–May 2020
3-Month
8.47"
(215.14mm)
7.94"
(201.68mm)
0.53"
(13.46mm)
97th Driest Driest since: 2018 1925
31st Wettest Wettest since: 2019 1957, 1991
Ties: 1947
Feb–May 2020
4-Month
10.91"
(277.11mm)
10.07"
(255.78mm)
0.84"
(21.33mm)
98th Driest Driest since: 2018 1925
30th Wettest Wettest since: 2019 2019
Jan–May 2020
5-Month
13.65"
(346.71mm)
12.39"
(314.71mm)
1.26"
(32.00mm)
111th Driest Driest since: 2018 1934
17th Wettest Wettest since: 2019 2019
Dec 2019–May 2020
6-Month
16.22"
(411.99mm)
14.73"
(374.14mm)
1.49"
(37.85mm)
109th Driest Driest since: 2018 1931
18th Wettest Wettest since: 2019 2019
Nov 2019–May 2020
7-Month
18.16"
(461.26mm)
16.96"
(430.78mm)
1.20"
(30.48mm)
100th Driest Driest since: 2018 1934
27th Wettest Wettest since: 2019 1983
Ties: 1907
Oct 2019–May 2020
8-Month
21.35"
(542.29mm)
19.13"
(485.90mm)
2.22"
(56.39mm)
113th Driest Driest since: 2018 1934
14th Wettest Wettest since: 2019 2019
Sep 2019–May 2020
9-Month
23.80"
(604.52mm)
21.62"
(549.15mm)
2.18"
(55.37mm)
107th Driest Driest since: 2018 1934
20th Wettest Wettest since: 2019 2019
Aug 2019–May 2020
10-Month
26.58"
(675.13mm)
24.25"
(615.95mm)
2.33"
(59.18mm)
108th Driest Driest since: 2018 1918
19th Wettest Wettest since: 2019 2019
Jul 2019–May 2020
11-Month
29.34"
(745.24mm)
27.03"
(686.56mm)
2.31"
(58.68mm)
107th Driest Driest since: 2018 1931
20th Wettest Wettest since: 2019 2019
Jun 2019–May 2020
12-Month
32.71"
(830.83mm)
29.95"
(760.73mm)
2.76"
(70.10mm)
110th Driest Driest since: 2018 1934
17th Wettest Wettest since: 2019 2019
Dec 2018–May 2020
18-Month
51.72"
(1,313.69mm)
44.70"
(1,135.38mm)
7.02"
(178.31mm)
124th Driest Driest since: 2018 1931
2nd Wettest Wettest since: 2019 2019
Jun 2018–May 2020
24-Month
70.42"
(1,788.67mm)
59.92"
(1,521.97mm)
10.50"
(266.70mm)
125th Driest Driest since: 2019 1931
1st Wettest Wettest to Date 2020
Jun 2017–May 2020
36-Month
100.49"
(2,552.45mm)
89.88"
(2,282.95mm)
10.61"
(269.50mm)
123rd Driest Driest since: 2018 1955
2nd Wettest Wettest since: 2019 2019
Jun 2016–May 2020
48-Month
133.89"
(3,400.81mm)
119.78"
(3,042.41mm)
14.11"
(358.40mm)
122nd Driest Driest since: 2018 1956
2nd Wettest Wettest since: 2019 2019
Jun 2015–May 2020
60-Month
168.47"
(4,279.14mm)
149.64"
(3,800.86mm)
18.83"
(478.28mm)
122nd 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 September 2021, retrieved on September 19, 2021 from https://www.ncdc.noaa.gov/cag/