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, September 2018

View Period (Months):All1234567891011121824364860
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  • Record Wettest
Period Value 1901-2000
Mean
Amomaly Rank
(1895-2018)
Wettest/Driest
Since
Record
September 2018
1-Month
3.54"
(89.92mm)
2.49"
(63.25mm)
1.05"
(26.67mm)
123ʳᵈ Driest Driest since: 2017 1956
2ⁿᵈ Wettest Wettest since: 1986 1986
Aug–Sep 2018
2-Month
6.53"
(165.86mm)
5.11"
(129.79mm)
1.42"
(36.07mm)
123ʳᵈ Driest Driest since: 2017 1956
2ⁿᵈ Wettest Wettest since: 1977 1977
Jul–Sep 2018
3-Month
9.39"
(238.51mm)
7.88"
(200.15mm)
1.51"
(38.36mm)
122ⁿᵈ Driest Driest since: 2017 1930
3ʳᵈ Wettest Wettest since: 1915 1915
Jun–Sep 2018
4-Month
12.55"
(318.77mm)
10.81"
(274.57mm)
1.74"
(44.20mm)
119ᵗʰ Driest Driest since: 2017 1930
6ᵗʰ Wettest Wettest since: 2004 1915
May–Sep 2018
5-Month
15.57"
(395.48mm)
13.72"
(348.49mm)
1.85"
(46.99mm)
119ᵗʰ Driest Driest since: 2017 1956
6ᵗʰ Wettest Wettest since: 2015 1915
Ties: 2013
Apr–Sep 2018
6-Month
18.04"
(458.22mm)
16.24"
(412.50mm)
1.80"
(45.72mm)
114ᵗʰ Driest Driest since: 2016 1956
11ᵗʰ Wettest Wettest since: 2017 1915
Mar–Sep 2018
7-Month
20.52"
(521.21mm)
18.75"
(476.25mm)
1.77"
(44.96mm)
109ᵗʰ Driest Driest since: 2014 1956
16ᵗʰ Wettest Wettest since: 2017 1973
Feb–Sep 2018
8-Month
23.41"
(594.61mm)
20.88"
(530.35mm)
2.53"
(64.26mm)
118ᵗʰ Driest Driest since: 2017 1930
7ᵗʰ Wettest Wettest since: 1975 1945
Jan–Sep 2018
9-Month
25.26"
(641.60mm)
23.20"
(589.28mm)
2.06"
(52.32mm)
112ᵗʰ Driest Driest since: 2016 1934
13ᵗʰ Wettest Wettest since: 2017 2017
Dec 2017–Sep 2018
10-Month
26.85"
(681.99mm)
25.54"
(648.72mm)
1.31"
(33.27mm)
89ᵗʰ Driest Driest since: 2014 1931
35ᵗʰ Wettest Wettest since: 2017 1973
Ties: 1907
Nov 2017–Sep 2018
11-Month
28.47"
(723.14mm)
27.77"
(705.36mm)
0.70"
(17.78mm)
75ᵗʰ Driest Driest since: 2014 1934
49ᵗʰ Wettest Wettest since: 2017 1993
Oct 2017–Sep 2018
12-Month
31.07"
(789.18mm)
29.94"
(760.48mm)
1.13"
(28.70mm)
80ᵗʰ Driest Driest since: 2014 1934
44ᵗʰ Wettest Wettest since: 2017 1973
Apr 2017–Sep 2018
18-Month
49.48"
(1,256.79mm)
46.20"
(1,173.48mm)
3.28"
(83.31mm)
108ᵗʰ Driest Driest since: 2015 1931
16ᵗʰ Wettest Wettest since: 2017 2016
Oct 2016–Sep 2018
24-Month
64.42"
(1,636.27mm)
59.92"
(1,521.97mm)
4.50"
(114.30mm)
110ᵗʰ Driest Driest since: 2015 1918
13ᵗʰ Wettest Wettest since: 2017 2017
Oct 2015–Sep 2018
36-Month
99.29"
(2,521.97mm)
89.87"
(2,282.70mm)
9.42"
(239.27mm)
119ᵗʰ Driest Driest since: 2016 1956
3ʳᵈ Wettest Wettest since: 2017 1975
Oct 2014–Sep 2018
48-Month
130.70"
(3,319.78mm)
119.78"
(3,042.41mm)
10.92"
(277.37mm)
118ᵗʰ Driest Driest since: 2017 1956
3ʳᵈ Wettest Wettest since: 1998 1998
Oct 2013–Sep 2018
60-Month
160.90"
(4,086.86mm)
149.66"
(3,801.36mm)
11.24"
(285.50mm)
114ᵗʰ Driest Driest since: 2017 1956
6ᵗʰ Wettest Wettest since: 1999 1999

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: National Time Series, published November 2018, retrieved on November 15, 2018 from https://www.ncdc.noaa.gov/cag/