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 June 2021. For more information, please see Climatological Rankings.


Contiguous U.S.

Precipitation Rankings, September 1939

View Period (Months):All1234567891011121824364860
Download: xml csv json
  • Record Driest
  • Bottom 1/10
  • Bottom 1/3
  • Normal
  • Top 1/3
  • Top 1/10
  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Wettest/Driest
Since
Record
September 1939
1-Month
1.62"
(41.15mm)
2.49"
(63.25mm)
-0.87"
(-22.10mm)
8th Driest Driest since: 1922 1956
119th Wettest Wettest since: 1938 1986
Aug–Sep 1939
2-Month
4.33"
(109.98mm)
5.11"
(129.79mm)
-0.78"
(-19.81mm)
12th Driest Driest since: 1930 1956
115th Wettest Wettest since: 1938 1977
Jul–Sep 1939
3-Month
6.69"
(169.93mm)
7.88"
(200.15mm)
-1.19"
(-30.22mm)
10th Driest Driest since: 1930 1930
117th Wettest Wettest since: 1938 1915
Jun–Sep 1939
4-Month
10.01"
(254.25mm)
10.81"
(274.57mm)
-0.80"
(-20.32mm)
25th Driest Driest since: 1936 1930
102nd Wettest Wettest since: 1938 1915
May–Sep 1939
5-Month
12.21"
(310.13mm)
13.72"
(348.49mm)
-1.51"
(-38.36mm)
14th Driest Driest since: 1936 1956
113th Wettest Wettest since: 1938 1915
Apr–Sep 1939
6-Month
14.37"
(365.00mm)
16.24"
(412.50mm)
-1.87"
(-47.50mm)
13th Driest Driest since: 1936 1956
114th Wettest Wettest since: 1938 1915
Mar–Sep 1939
7-Month
16.44"
(417.58mm)
18.75"
(476.25mm)
-2.31"
(-58.67mm)
10th Driest Driest since: 1936 1956
117th Wettest Wettest since: 1938 1973
Feb–Sep 1939
8-Month
19.37"
(492.00mm)
20.88"
(530.35mm)
-1.51"
(-38.35mm)
21st Driest Driest since: 1936 1930
106th Wettest Wettest since: 1938 2019
Jan–Sep 1939
9-Month
21.86"
(555.24mm)
23.20"
(589.28mm)
-1.34"
(-34.04mm)
24th Driest Driest since: 1936 1934
103rd Wettest Wettest since: 1938 2019
Dec 1938–Sep 1939
10-Month
23.57"
(598.68mm)
25.54"
(648.72mm)
-1.97"
(-50.04mm)
19th Driest Driest since: 1936 1931
107th Wettest Wettest since: 1938 2019
Nov 1938–Sep 1939
11-Month
25.58"
(649.73mm)
27.77"
(705.36mm)
-2.19"
(-55.63mm)
18th Driest Driest since: 1936 1934
108th Wettest Wettest since: 1938 2019
Oct 1938–Sep 1939
12-Month
26.88"
(682.75mm)
29.94"
(760.48mm)
-3.06"
(-77.73mm)
14th Driest Driest since: 1936 1934
112th Wettest Wettest since: 1938 2019
Apr 1938–Sep 1939
18-Month
43.78"
(1,112.01mm)
46.20"
(1,173.48mm)
-2.42"
(-61.47mm)
24th Driest Driest since: 1937 1931
102nd Wettest Wettest since: 1938 2019
Oct 1937–Sep 1939
24-Month
58.80"
(1,493.52mm)
59.92"
(1,521.97mm)
-1.12"
(-28.45mm)
41st Driest Driest since: 1937 1918
84th Wettest Wettest since: 1938 2020
Ties: 1944
Oct 1936–Sep 1939
36-Month
88.12"
(2,238.25mm)
89.87"
(2,282.70mm)
-1.75"
(-44.45mm)
39th Driest Driest since: 1938 1956
85th Wettest Wettest since: 1929 2019
Oct 1935–Sep 1939
48-Month
114.82"
(2,916.43mm)
119.78"
(3,042.41mm)
-4.96"
(-125.98mm)
18th Driest Driest since: 1937 1956
105th Wettest Wettest since: 1938 2019
Oct 1934–Sep 1939
60-Month
145.48"
(3,695.19mm)
149.66"
(3,801.36mm)
-4.18"
(-106.17mm)
25th Driest Driest since: 1938 1956
97th Wettest Wettest since: 1930 2020

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: National Time Series, published July 2021, retrieved on July 29, 2021 from https://www.ncdc.noaa.gov/cag/