Climate at a Glance

Statewide 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 December 2019. For more information, please see Climatological Rankings.


Iowa

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
(1895-2019)
Wettest/Driest
Since
Record
September 1970
1-Month
6.10"
(154.94mm)
3.67"
(93.22mm)
2.43"
(61.72mm)
112th Driest Driest since: 1969 1939
14th Wettest Wettest since: 1965 1965
Aug–Sep 1970
2-Month
10.08"
(256.03mm)
7.51"
(190.75mm)
2.57"
(65.28mm)
107th Driest Driest since: 1969 1976
19th Wettest Wettest since: 1965 2018
Jul–Sep 1970
3-Month
13.62"
(345.95mm)
11.36"
(288.54mm)
2.26"
(57.41mm)
100th Driest Driest since: 1969 2013
26th Wettest Wettest since: 1965 1993
Jun–Sep 1970
4-Month
16.75"
(425.45mm)
16.00"
(406.40mm)
0.75"
(19.05mm)
75th Driest Driest since: 1967 2012
51st Wettest Wettest since: 1969 1993
May–Sep 1970
5-Month
21.70"
(551.18mm)
20.04"
(509.02mm)
1.66"
(42.16mm)
84th Driest Driest since: 1968 1976
42nd Wettest Wettest since: 1969 1993
Apr–Sep 1970
6-Month
24.01"
(609.85mm)
22.99"
(583.95mm)
1.02"
(25.90mm)
74th Driest Driest since: 1967 1988
52nd Wettest Wettest since: 1969 1993
Mar–Sep 1970
7-Month
26.21"
(665.73mm)
24.94"
(633.48mm)
1.27"
(32.25mm)
78th Driest Driest since: 1968 1988
48th Wettest Wettest since: 1969 1993
Feb–Sep 1970
8-Month
26.38"
(670.05mm)
25.96"
(659.38mm)
0.42"
(10.67mm)
67th Driest Driest since: 1968 1988
59th Wettest Wettest since: 1969 1993
Jan–Sep 1970
9-Month
26.65"
(676.91mm)
26.93"
(684.02mm)
-0.28"
(-7.11mm)
59th Driest Driest since: 1968 1988
67th Wettest Wettest since: 1969 1993
Dec 1969–Sep 1970
10-Month
28.11"
(713.99mm)
28.04"
(712.22mm)
0.07"
(1.77mm)
63rd Driest Driest since: 1968 1988
62nd Wettest Wettest since: 1969 1993
Nov 1969–Sep 1970
11-Month
28.38"
(720.85mm)
29.78"
(756.41mm)
-1.40"
(-35.56mm)
49th Driest Driest since: 1968 1934
76th Wettest Wettest since: 1969 1993
Oct 1969–Sep 1970
12-Month
31.99"
(812.55mm)
32.09"
(815.09mm)
-0.10"
(-2.54mm)
58th Driest Driest since: 1968 1934
67th Wettest Wettest since: 1969 1993
Apr 1969–Sep 1970
18-Month
57.59"
(1,462.79mm)
55.13"
(1,400.30mm)
2.46"
(62.49mm)
81st Driest Driest since: 1968 1934
44th Wettest Wettest since: 1969 1993
Oct 1968–Sep 1970
24-Month
68.17"
(1,731.52mm)
64.26"
(1,632.20mm)
3.91"
(99.32mm)
84th Driest Driest since: 1969 1956
40th Wettest Wettest since: 1965 1993
Oct 1967–Sep 1970
36-Month
98.96"
(2,513.58mm)
96.36"
(2,447.54mm)
2.60"
(66.04mm)
75th Driest Driest since: 1969 1957
48th Wettest Wettest since: 1962 2010
Oct 1966–Sep 1970
48-Month
127.52"
(3,239.01mm)
128.36"
(3,260.34mm)
-0.84"
(-21.33mm)
55th Driest Driest since: 1969 1958
67th Wettest Wettest since: 1965 2010
Oct 1965–Sep 1970
60-Month
153.72"
(3,904.49mm)
160.34"
(4,072.64mm)
-6.62"
(-168.15mm)
28th Driest Driest since: 1967 1957
93rd Wettest Wettest since: 1969 2010

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published January 2020, retrieved on January 24, 2020 from https://www.ncdc.noaa.gov/cag/