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 June 2019. For more information, please see Climatological Rankings.


Contiguous U.S.

Precipitation Rankings, May 1978

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
Amomaly Rank
(1895-2019)
Wettest/Driest
Since
Record
May 1978
1-Month
3.64"
(92.46mm)
2.91"
(73.91mm)
0.73"
(18.55mm)
114th Driest Driest since: 1977 1934
12th Wettest Wettest since: 1957 2015
Apr–May 1978
2-Month
6.18"
(156.97mm)
5.43"
(137.92mm)
0.75"
(19.05mm)
103rd Driest Driest since: 1977 1934
23rd Wettest Wettest since: 1973 1957
Mar–May 1978
3-Month
8.44"
(214.38mm)
7.94"
(201.68mm)
0.50"
(12.70mm)
92nd Driest Driest since: 1977 1925
34th Wettest Wettest since: 1975 1957, 1991
Feb–May 1978
4-Month
10.21"
(259.33mm)
10.07"
(255.78mm)
0.14"
(3.55mm)
72nd Driest Driest since: 1977 1925
54th Wettest Wettest since: 1975 2019
Jan–May 1978
5-Month
13.39"
(340.11mm)
12.39"
(314.71mm)
1.00"
(25.40mm)
101st Driest Driest since: 1977 1934
25th Wettest Wettest since: 1975 2019
Ties: 2011
Dec 1977–May 1978
6-Month
16.11"
(409.19mm)
14.73"
(374.14mm)
1.38"
(35.05mm)
104th Driest Driest since: 1977 1931
21st Wettest Wettest since: 1975 2019
Nov 1977–May 1978
7-Month
18.97"
(481.84mm)
16.96"
(430.78mm)
2.01"
(51.06mm)
108th Driest Driest since: 1977 1934
17th Wettest Wettest since: 1975 1983
Oct 1977–May 1978
8-Month
21.16"
(537.46mm)
19.13"
(485.90mm)
2.03"
(51.56mm)
108th Driest Driest since: 1977 1934
17th Wettest Wettest since: 1975 2019
Ties: 1903
Sep 1977–May 1978
9-Month
24.38"
(619.25mm)
21.62"
(549.15mm)
2.76"
(70.10mm)
114th Driest Driest since: 1977 1934
11th Wettest Wettest since: 1974 2019
Ties: 1927
Aug 1977–May 1978
10-Month
27.93"
(709.42mm)
24.25"
(615.95mm)
3.68"
(93.47mm)
119th Driest Driest since: 1977 1918
6th Wettest Wettest since: 1973 2019
Jul 1977–May 1978
11-Month
30.49"
(774.45mm)
27.03"
(686.56mm)
3.46"
(87.89mm)
117th Driest Driest since: 1977 1931
8th Wettest Wettest since: 1973 2019
Jun 1977–May 1978
12-Month
32.98"
(837.69mm)
29.95"
(760.73mm)
3.03"
(76.96mm)
112th Driest Driest since: 1977 1934
13th Wettest Wettest since: 1974 2019
Dec 1976–May 1978
18-Month
45.19"
(1,147.83mm)
44.70"
(1,135.38mm)
0.49"
(12.45mm)
67th Driest Driest since: 1977 1931
57th Wettest Wettest since: 1976 2019
Jun 1976–May 1978
24-Month
58.70"
(1,490.98mm)
59.92"
(1,521.97mm)
-1.22"
(-30.99mm)
37th Driest Driest since: 1977 1931
87th Wettest Wettest since: 1976 1974
Jun 1975–May 1978
36-Month
88.60"
(2,250.44mm)
89.88"
(2,282.95mm)
-1.28"
(-32.51mm)
43rd Driest Driest since: 1977 1955
80th Wettest Wettest since: 1976 2019
Jun 1974–May 1978
48-Month
120.71"
(3,066.03mm)
119.78"
(3,042.41mm)
0.93"
(23.62mm)
64th Driest Driest since: 1971 1956
58th Wettest Wettest since: 1977 2019
Jun 1973–May 1978
60-Month
153.95"
(3,910.33mm)
149.64"
(3,800.86mm)
4.31"
(109.47mm)
90th Driest Driest since: 1972 1957
31st Wettest Wettest since: 1977 2019

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: National Time Series, published July 2019, retrieved on July 20, 2019 from https://www.ncdc.noaa.gov/cag/