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 2022. For more information, please see Climatological Rankings.


Contiguous U.S.

Precipitation Rankings, September 2017

View Period (Months):All1234567891011121824364860
Download: xml csv json
  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Wettest/Driest
Since
Record
September 2017
1-Month
2.27"
(57.66mm)
2.49"
(63.25mm)
-0.22"
(-5.59mm)
39th Driest Driest since: 2015 1956
89th Wettest Wettest since: 2016 1986
Aug–Sep 2017
2-Month
5.69"
(144.53mm)
5.11"
(129.79mm)
0.58"
(14.74mm)
107th Driest Driest since: 2015 1956
21st Wettest Wettest since: 2016 1977
Jul–Sep 2017
3-Month
8.49"
(215.65mm)
7.88"
(200.15mm)
0.61"
(15.50mm)
98th Driest Driest since: 2015 1930
30th Wettest Wettest since: 2016 1915
Jun–Sep 2017
4-Month
11.56"
(293.62mm)
10.81"
(274.57mm)
0.75"
(19.05mm)
100th Driest Driest since: 2015 1930
28th Wettest Wettest since: 2016 1915
May–Sep 2017
5-Month
14.92"
(378.97mm)
13.72"
(348.49mm)
1.20"
(30.48mm)
107th Driest Driest since: 2016 1956
21st Wettest Wettest since: 2015 1915
Apr–Sep 2017
6-Month
18.42"
(467.87mm)
16.24"
(412.50mm)
2.18"
(55.37mm)
120th Driest Driest since: 2016 1956
8th Wettest Wettest since: 2015 1915
Ties: 1945, 2004
Mar–Sep 2017
7-Month
21.01"
(533.65mm)
18.75"
(476.25mm)
2.26"
(57.40mm)
119th Driest Driest since: 2016 1956
9th Wettest Wettest since: 1991 1973
Feb–Sep 2017
8-Month
23.26"
(590.80mm)
20.88"
(530.35mm)
2.38"
(60.45mm)
119th Driest Driest since: 2016 1930
9th Wettest Wettest since: 1975 2019
Jan–Sep 2017
9-Month
26.50"
(673.10mm)
23.20"
(589.28mm)
3.30"
(83.82mm)
126th Driest Driest since: 2016 1934
2nd Wettest Wettest to Date 2019
Dec 2016–Sep 2017
10-Month
29.22"
(742.19mm)
25.54"
(648.72mm)
3.68"
(93.47mm)
124th Driest Driest since: 2016 1931
3rd Wettest Wettest since: 1973 2019
Nov 2016–Sep 2017
11-Month
30.97"
(786.64mm)
27.77"
(705.36mm)
3.20"
(81.28mm)
119th Driest Driest since: 2015 1934
8th Wettest Wettest since: 2016 2019
Oct 2016–Sep 2017
12-Month
33.36"
(847.34mm)
29.94"
(760.48mm)
3.42"
(86.86mm)
117th Driest Driest since: 2015 1934
10th Wettest Wettest since: 2016 2019
Apr 2016–Sep 2017
18-Month
51.03"
(1,296.16mm)
46.20"
(1,173.48mm)
4.83"
(122.68mm)
119th Driest Driest since: 2015 1931
8th Wettest Wettest since: 2016 2019
Oct 2015–Sep 2017
24-Month
68.23"
(1,733.04mm)
59.92"
(1,521.97mm)
8.31"
(211.07mm)
124th Driest Driest since: 2016 1918
2nd Wettest Wettest to Date 2020
Oct 2014–Sep 2017
36-Month
99.64"
(2,530.86mm)
89.87"
(2,282.70mm)
9.77"
(248.16mm)
122nd Driest Driest since: 2016 1956
3rd Wettest Wettest since: 1975 2019
Oct 2013–Sep 2017
48-Month
129.84"
(3,297.94mm)
119.78"
(3,042.41mm)
10.06"
(255.53mm)
117th Driest Driest since: 2016 1956
7th Wettest Wettest since: 1999 2019
Oct 2012–Sep 2017
60-Month
160.85"
(4,085.59mm)
149.66"
(3,801.36mm)
11.19"
(284.23mm)
113th Driest Driest since: 2016 1956
10th Wettest Wettest since: 1999 2020

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: National Time Series, Precipitation, published September 2022, retrieved on October 2, 2022 from https://www.ncdc.noaa.gov/cag/