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, August 2018

View Period (Months):All1234567891011121824364860
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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
5.79"
(147.07mm)
5.40"
(137.16mm)
0.39"
(9.91mm)
98ᵗʰ Driest Driest since: 2015 1930
27ᵗʰ Wettest Wettest since: 2017 1915
Jun–Aug 2018
3-Month
8.95"
(227.33mm)
8.32"
(211.33mm)
0.63"
(16.00mm)
100ᵗʰ Driest Driest since: 2016 1930
25ᵗʰ Wettest Wettest since: 2017 1928
May–Aug 2018
4-Month
11.97"
(304.04mm)
11.23"
(285.24mm)
0.74"
(18.80mm)
95ᵗʰ Driest Driest since: 2016 1936
30ᵗʰ Wettest Wettest since: 2017 1915
Ties: 1996
Apr–Aug 2018
5-Month
14.44"
(366.78mm)
13.75"
(349.25mm)
0.69"
(17.53mm)
87ᵗʰ Driest Driest since: 2012 1934
38ᵗʰ Wettest Wettest since: 2017 2015
Ties: 1907, 1989
Mar–Aug 2018
6-Month
16.92"
(429.77mm)
16.26"
(413.00mm)
0.66"
(16.77mm)
81ˢᵗ Driest Driest since: 2012 1936
44ᵗʰ Wettest Wettest since: 2017 1905
Feb–Aug 2018
7-Month
19.81"
(503.17mm)
18.40"
(467.36mm)
1.41"
(35.81mm)
99ᵗʰ Driest Driest since: 2016 1934
26ᵗʰ Wettest Wettest since: 2017 1905
Jan–Aug 2018
8-Month
21.67"
(550.42mm)
20.71"
(526.03mm)
0.96"
(24.39mm)
91ˢᵗ Driest Driest since: 2014 1934
34ᵗʰ Wettest Wettest since: 2017 2017
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
48.46"
(1,230.88mm)
46.22"
(1,173.99mm)
2.24"
(56.89mm)
91ˢᵗ Driest Driest since: 2014 1931
33ʳᵈ Wettest Wettest since: 2017 2016
Sep 2016–Aug 2018
24-Month
63.51"
(1,613.15mm)
59.92"
(1,521.97mm)
3.59"
(91.18mm)
102ⁿᵈ Driest Driest since: 2015 1918
21ˢᵗ Wettest Wettest since: 2017 2017
Ties: 1942
Sep 2015–Aug 2018
36-Month
97.77"
(2,483.36mm)
89.86"
(2,282.44mm)
7.91"
(200.92mm)
114ᵗʰ Driest Driest since: 2016 1956
8ᵗʰ Wettest Wettest since: 2017 1975
Sep 2014–Aug 2018
48-Month
129.70"
(3,294.38mm)
119.77"
(3,042.16mm)
9.93"
(252.22mm)
116ᵗʰ Driest Driest since: 2016 1956
5ᵗʰ Wettest Wettest since: 2017 1998
Sep 2013–Aug 2018
60-Month
160.24"
(4,070.10mm)
149.64"
(3,800.86mm)
10.60"
(269.24mm)
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 September 2018, retrieved on September 22, 2018 from https://www.ncdc.noaa.gov/cag/