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 2021. For more information, please see Climatological Rankings.


Contiguous U.S.

Precipitation Rankings, September 1947

View Period (Months):All1234567891011121824364860
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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Wettest/Driest
Since
Record
September 1947
1-Month
2.16"
(54.86mm)
2.49"
(63.25mm)
-0.33"
(-8.39mm)
26th Driest Driest since: 1943 1956
101st Wettest Wettest since: 1946 1986
Ties: 1932
Aug–Sep 1947
2-Month
4.55"
(115.57mm)
5.11"
(129.79mm)
-0.56"
(-14.22mm)
21st Driest Driest since: 1943 1956
106th Wettest Wettest since: 1946 1977
Ties: 1929, 1937
Jul–Sep 1947
3-Month
6.54"
(166.12mm)
7.88"
(200.15mm)
-1.34"
(-34.03mm)
6th Driest Driest since: 1930 1930
121st Wettest Wettest since: 1946 1915
Ties: 1952
Jun–Sep 1947
4-Month
10.37"
(263.40mm)
10.81"
(274.57mm)
-0.44"
(-11.17mm)
36th Driest Driest since: 1943 1930
91st Wettest Wettest since: 1946 1915
May–Sep 1947
5-Month
13.56"
(344.42mm)
13.72"
(348.49mm)
-0.16"
(-4.07mm)
51st Driest Driest since: 1943 1956
76th Wettest Wettest since: 1946 1915
Apr–Sep 1947
6-Month
16.57"
(420.88mm)
16.24"
(412.50mm)
0.33"
(8.38mm)
72nd Driest Driest since: 1946 1956
55th Wettest Wettest since: 1945 1915
Mar–Sep 1947
7-Month
18.84"
(478.54mm)
18.75"
(476.25mm)
0.09"
(2.29mm)
61st Driest Driest since: 1946 1956
66th Wettest Wettest since: 1945 1973
Feb–Sep 1947
8-Month
19.87"
(504.70mm)
20.88"
(530.35mm)
-1.01"
(-25.65mm)
32nd Driest Driest since: 1943 1930
95th Wettest Wettest since: 1946 2019
Ties: 1953, 2007
Jan–Sep 1947
9-Month
22.30"
(566.42mm)
23.20"
(589.28mm)
-0.90"
(-22.86mm)
33rd Driest Driest since: 1943 1934
94th Wettest Wettest since: 1946 2019
Dec 1946–Sep 1947
10-Month
24.24"
(615.70mm)
25.54"
(648.72mm)
-1.30"
(-33.02mm)
28th Driest Driest since: 1939 1931
98th Wettest Wettest since: 1946 2019
Nov 1946–Sep 1947
11-Month
27.32"
(693.93mm)
27.77"
(705.36mm)
-0.45"
(-11.43mm)
49th Driest Driest since: 1943 1934
77th Wettest Wettest since: 1946 2019
Oct 1946–Sep 1947
12-Month
30.04"
(763.02mm)
29.94"
(760.48mm)
0.10"
(2.54mm)
61st Driest Driest since: 1944 1934
65th Wettest Wettest since: 1946 2019
Apr 1946–Sep 1947
18-Month
46.12"
(1,171.45mm)
46.20"
(1,173.48mm)
-0.08"
(-2.03mm)
55th Driest Driest since: 1944 1931
71st Wettest Wettest since: 1946 2019
Oct 1945–Sep 1947
24-Month
60.33"
(1,532.38mm)
59.92"
(1,521.97mm)
0.41"
(10.41mm)
61st Driest Driest since: 1944 1918
64th Wettest Wettest since: 1946 2020
Oct 1944–Sep 1947
36-Month
92.50"
(2,349.50mm)
89.87"
(2,282.70mm)
2.63"
(66.80mm)
87th Driest Driest since: 1946 1956
37th Wettest Wettest since: 1943 2019
Oct 1943–Sep 1947
48-Month
122.12"
(3,101.85mm)
119.78"
(3,042.41mm)
2.34"
(59.44mm)
79th Driest Driest since: 1946 1956
44th Wettest Wettest since: 1945 2019
Oct 1942–Sep 1947
60-Month
151.30"
(3,843.02mm)
149.66"
(3,801.36mm)
1.64"
(41.66mm)
68th Driest Driest since: 1944 1956
54th Wettest Wettest since: 1946 2020

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: National Time Series, published June 2021, retrieved on June 15, 2021 from https://www.ncdc.noaa.gov/cag/