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


Contiguous U.S.

Precipitation Rankings, September 1970

View Period (Months):All1234567891011121824364860
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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Wettest/Driest
Since
Record
September 1970
1-Month
3.06"
(77.72mm)
2.49"
(63.25mm)
0.57"
(14.47mm)
117th Driest Driest since: 1969 1956
11th Wettest Wettest since: 1965 1986
Aug–Sep 1970
2-Month
5.43"
(137.92mm)
5.11"
(129.79mm)
0.32"
(8.13mm)
94th Driest Driest since: 1969 1956
34th Wettest Wettest since: 1966 1977
Jul–Sep 1970
3-Month
7.84"
(199.14mm)
7.88"
(200.15mm)
-0.04"
(-1.01mm)
61st Driest Driest since: 1969 1930
67th Wettest Wettest since: 1968 1915
Jun–Sep 1970
4-Month
10.61"
(269.49mm)
10.81"
(274.57mm)
-0.20"
(-5.08mm)
46th Driest Driest since: 1966 1930
82nd Wettest Wettest since: 1969 1915
May–Sep 1970
5-Month
13.22"
(335.79mm)
13.72"
(348.49mm)
-0.50"
(-12.70mm)
41st Driest Driest since: 1966 1956
87th Wettest Wettest since: 1969 1915
Apr–Sep 1970
6-Month
16.00"
(406.40mm)
16.24"
(412.50mm)
-0.24"
(-6.10mm)
50th Driest Driest since: 1966 1956
78th Wettest Wettest since: 1969 1915
Mar–Sep 1970
7-Month
18.68"
(474.47mm)
18.75"
(476.25mm)
-0.07"
(-1.78mm)
54th Driest Driest since: 1969 1956
74th Wettest Wettest since: 1968 1973
Ties: 1999
Feb–Sep 1970
8-Month
20.31"
(515.87mm)
20.88"
(530.35mm)
-0.57"
(-14.48mm)
39th Driest Driest since: 1966 1930
89th Wettest Wettest since: 1969 2019
Jan–Sep 1970
9-Month
22.40"
(568.96mm)
23.20"
(589.28mm)
-0.80"
(-20.32mm)
35th Driest Driest since: 1966 1934
93rd Wettest Wettest since: 1969 2019
Ties: 1960
Dec 1969–Sep 1970
10-Month
25.34"
(643.64mm)
25.54"
(648.72mm)
-0.20"
(-5.08mm)
54th Driest Driest since: 1967 1931
73rd Wettest Wettest since: 1969 2019
Nov 1969–Sep 1970
11-Month
26.93"
(684.02mm)
27.77"
(705.36mm)
-0.84"
(-21.34mm)
39th Driest Driest since: 1966 1934
88th Wettest Wettest since: 1969 2019
Oct 1969–Sep 1970
12-Month
29.63"
(752.60mm)
29.94"
(760.48mm)
-0.31"
(-7.88mm)
50th Driest Driest since: 1967 1934
77th Wettest Wettest since: 1969 2019
Apr 1969–Sep 1970
18-Month
45.90"
(1,165.86mm)
46.20"
(1,173.48mm)
-0.30"
(-7.62mm)
49th Driest Driest since: 1967 1931
78th Wettest Wettest since: 1969 2019
Oct 1968–Sep 1970
24-Month
60.74"
(1,542.80mm)
59.92"
(1,521.97mm)
0.82"
(20.83mm)
71st Driest Driest since: 1968 1918
55th Wettest Wettest since: 1969 2020
Oct 1967–Sep 1970
36-Month
90.43"
(2,296.92mm)
89.87"
(2,282.70mm)
0.56"
(14.22mm)
65th Driest Driest since: 1969 1956
60th Wettest Wettest since: 1960 2019
Oct 1966–Sep 1970
48-Month
119.24"
(3,028.70mm)
119.78"
(3,042.41mm)
-0.54"
(-13.71mm)
54th Driest Driest since: 1969 1956
70th Wettest Wettest since: 1961 2019
Oct 1965–Sep 1970
60-Month
146.09"
(3,710.69mm)
149.66"
(3,801.36mm)
-3.57"
(-90.67mm)
29th Driest Driest since: 1968 1956
94th Wettest Wettest since: 1969 2020

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: National Time Series, published December 2021, retrieved on December 9, 2021 from https://www.ncdc.noaa.gov/cag/