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 2021. For more information, please see Climatological Rankings.


Contiguous U.S.

Precipitation Rankings, December 2017

View Period (Months):All1234567891011121824364860
Download: xml csv json
  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Wettest/Driest
Since
Record
December 2017
1-Month
1.59"
(40.39mm)
2.35"
(59.69mm)
-0.76"
(-19.30mm)
11th Driest Driest since: 1989 1930
116th Wettest Wettest since: 2016 2015
Nov–Dec 2017
2-Month
3.21"
(81.53mm)
4.58"
(116.33mm)
-1.37"
(-34.80mm)
8th Driest Driest since: 1999 1976
119th Wettest Wettest since: 2016 2015
Oct–Dec 2017
3-Month
5.81"
(147.57mm)
6.74"
(171.20mm)
-0.93"
(-23.63mm)
25th Driest Driest since: 1999 1917
102nd Wettest Wettest since: 2016 2015
Sep–Dec 2017
4-Month
8.08"
(205.23mm)
9.23"
(234.44mm)
-1.15"
(-29.21mm)
24th Driest Driest since: 1999 1939
103rd Wettest Wettest since: 2016 2018
Aug–Dec 2017
5-Month
11.50"
(292.10mm)
11.85"
(300.99mm)
-0.35"
(-8.89mm)
44th Driest Driest since: 2012 1917
83rd Wettest Wettest since: 2016 2018
Ties: 1896, 1987
Jul–Dec 2017
6-Month
14.30"
(363.22mm)
14.62"
(371.35mm)
-0.32"
(-8.13mm)
45th Driest Driest since: 2012 1917
82nd Wettest Wettest since: 2016 2018
Ties: 1912
Jun–Dec 2017
7-Month
17.37"
(441.20mm)
17.55"
(445.77mm)
-0.18"
(-4.57mm)
50th Driest Driest since: 2012 1917
77th Wettest Wettest since: 2016 2018
May–Dec 2017
8-Month
20.73"
(526.54mm)
20.46"
(519.68mm)
0.27"
(6.86mm)
68th Driest Driest since: 2012 1917
59th Wettest Wettest since: 2016 2015
Apr–Dec 2017
9-Month
24.23"
(615.44mm)
22.98"
(583.69mm)
1.25"
(31.75mm)
91st Driest Driest since: 2012 1956
36th Wettest Wettest since: 2016 2015
Mar–Dec 2017
10-Month
26.82"
(681.23mm)
25.49"
(647.45mm)
1.33"
(33.78mm)
92nd Driest Driest since: 2013 1956
35th Wettest Wettest since: 2016 2015
Feb–Dec 2017
11-Month
29.07"
(738.38mm)
27.62"
(701.55mm)
1.45"
(36.83mm)
90th Driest Driest since: 2013 1910
37th Wettest Wettest since: 2016 2018
Jan–Dec 2017
12-Month
32.31"
(820.67mm)
29.94"
(760.48mm)
2.37"
(60.19mm)
106th Driest Driest since: 2016 1910
21st Wettest Wettest since: 2015 1973
Jul 2016–Dec 2017
18-Month
48.29"
(1,226.57mm)
44.58"
(1,132.33mm)
3.71"
(94.24mm)
110th Driest Driest since: 2014 1954
16th Wettest Wettest since: 2016 2019
Jan 2016–Dec 2017
24-Month
63.73"
(1,618.74mm)
59.90"
(1,521.46mm)
3.83"
(97.28mm)
104th Driest Driest since: 2014 1931
22nd Wettest Wettest since: 2016 2019
Jan 2015–Dec 2017
36-Month
98.32"
(2,497.33mm)
89.86"
(2,282.44mm)
8.46"
(214.89mm)
117th Driest Driest since: 2016 1956
8th Wettest Wettest since: 1998 2019
Jan 2014–Dec 2017
48-Month
129.17"
(3,280.92mm)
119.78"
(3,042.41mm)
9.39"
(238.51mm)
115th Driest Driest since: 2016 1956
9th Wettest Wettest since: 1998 2019
Jan 2013–Dec 2017
60-Month
160.23"
(4,069.84mm)
149.68"
(3,801.87mm)
10.55"
(267.97mm)
113th Driest Driest since: 2016 1956
10th Wettest Wettest since: 1999 2019

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: National Time Series, published September 2021, retrieved on September 23, 2021 from https://www.ncdc.noaa.gov/cag/