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


Contiguous U.S.

Precipitation Rankings, August 2018

View Period (Months):All1234567891011121824364860
Download: xml csv json
  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Amomaly Rank
(1895-2018)
Wettest/Driest
Since
Record
August 2018
1-Month
2.99"
(75.95mm)
2.62"
(66.55mm)
0.37"
(9.40mm)
105th Driest Driest since: 2015 1929
20th Wettest Wettest since: 2017 1977
Ties: 1979, 2005
Jul–Aug 2018
2-Month
5.84"
(148.34mm)
5.40"
(137.16mm)
0.44"
(11.18mm)
100th Driest Driest since: 2015 1930
25th Wettest Wettest since: 2017 1915
Jun–Aug 2018
3-Month
9.00"
(228.60mm)
8.32"
(211.33mm)
0.68"
(17.27mm)
103rd Driest Driest since: 2016 1930
22nd Wettest Wettest since: 2017 1928
May–Aug 2018
4-Month
12.02"
(305.31mm)
11.23"
(285.24mm)
0.79"
(20.07mm)
96th Driest Driest since: 2016 1936
29th Wettest Wettest since: 2017 1915
Ties: 1935
Apr–Aug 2018
5-Month
14.48"
(367.79mm)
13.75"
(349.25mm)
0.73"
(18.54mm)
88th Driest Driest since: 2012 1934
37th Wettest Wettest since: 2017 2015
Mar–Aug 2018
6-Month
16.95"
(430.53mm)
16.26"
(413.00mm)
0.69"
(17.53mm)
81st Driest Driest since: 2012 1936
44th Wettest Wettest since: 2017 1905
Feb–Aug 2018
7-Month
19.83"
(503.68mm)
18.40"
(467.36mm)
1.43"
(36.32mm)
99th Driest Driest since: 2016 1934
26th Wettest Wettest since: 2017 1905
Jan–Aug 2018
8-Month
21.68"
(550.67mm)
20.71"
(526.03mm)
0.97"
(24.64mm)
92nd Driest Driest since: 2014 1934
33rd Wettest Wettest since: 2017 2017
Ties: 1920
Dec 2017–Aug 2018
9-Month
23.27"
(591.06mm)
23.05"
(585.47mm)
0.22"
(5.59mm)
59th Driest Driest since: 2012 1931
65th Wettest Wettest since: 2017 2017
Nov 2017–Aug 2018
10-Month
24.89"
(632.21mm)
25.28"
(642.11mm)
-0.39"
(-9.90mm)
46th Driest Driest since: 2012 1934
78th Wettest Wettest since: 2017 1993
Oct 2017–Aug 2018
11-Month
27.49"
(698.25mm)
27.45"
(697.23mm)
0.04"
(1.02mm)
55th Driest Driest since: 2012 1934
69th Wettest Wettest since: 2017 2016
Sep 2017–Aug 2018
12-Month
29.76"
(755.90mm)
29.94"
(760.48mm)
-0.18"
(-4.58mm)
52nd Driest Driest since: 2012 1934
72nd Wettest Wettest since: 2017 1973
Mar 2017–Aug 2018
18-Month
48.50"
(1,231.90mm)
46.22"
(1,173.99mm)
2.28"
(57.91mm)
92nd Driest Driest since: 2014 1931
32nd Wettest Wettest since: 2017 2016
Sep 2016–Aug 2018
24-Month
63.58"
(1,614.93mm)
59.92"
(1,521.97mm)
3.66"
(92.96mm)
103rd Driest Driest since: 2015 1918
20th Wettest Wettest since: 2017 2017
Sep 2015–Aug 2018
36-Month
97.84"
(2,485.14mm)
89.86"
(2,282.44mm)
7.98"
(202.70mm)
114th Driest Driest since: 2016 1956
8th Wettest Wettest since: 2017 1975
Sep 2014–Aug 2018
48-Month
129.77"
(3,296.16mm)
119.77"
(3,042.16mm)
10.00"
(254.00mm)
116th Driest Driest since: 2016 1956
5th Wettest Wettest since: 2017 1998
Sep 2013–Aug 2018
60-Month
160.31"
(4,071.87mm)
149.64"
(3,800.86mm)
10.67"
(271.01mm)
114th Driest Driest since: 2016 1934
6th Wettest Wettest since: 2017 1999

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: National Time Series, published June 2019, retrieved on June 19, 2019 from https://www.ncdc.noaa.gov/cag/