Statewide Rankings

Statewide Data Info
Please note, Degree Days and Palmer Indices are not available for Alaska. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Iowa

Precipitation Rankings, September 1952

View Period (Months):
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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
September 1952
1-Month
0.85"
(21.59mm)
3.67"
(93.22mm)
-2.82"
(-71.63mm)
2nd Driest
Driest since:
1939
127th Wettest
Wettest since:
1965
Aug–Sep 1952
2-Month
5.54"
(140.72mm)
7.51"
(190.75mm)
-1.97"
(-50.03mm)
29th Driest
Driest since:
1976
100th Wettest
Wettest since:
2018
Ties: 1958
Jul–Sep 1952
3-Month
9.32"
(236.73mm)
11.36"
(288.54mm)
-2.04"
(-51.81mm)
38th Driest
Driest since:
2013
91st Wettest
Wettest since:
1993
Jun–Sep 1952
4-Month
14.71"
(373.63mm)
16.00"
(406.40mm)
-1.29"
(-32.77mm)
48th Driest
Driest since:
2012
81st Wettest
Wettest since:
1993
May–Sep 1952
5-Month
18.53"
(470.66mm)
20.04"
(509.02mm)
-1.51"
(-38.36mm)
47th Driest
Driest since:
1976
82nd Wettest
Wettest since:
1993
Apr–Sep 1952
6-Month
20.40"
(518.16mm)
22.99"
(583.95mm)
-2.59"
(-65.79mm)
32nd Driest
Driest since:
1988
97th Wettest
Wettest since:
1993
Mar–Sep 1952
7-Month
23.62"
(599.95mm)
24.94"
(633.48mm)
-1.32"
(-33.53mm)
50th Driest
Driest since:
1988
79th Wettest
Wettest since:
1993
Feb–Sep 1952
8-Month
24.27"
(616.46mm)
25.96"
(659.38mm)
-1.69"
(-42.92mm)
47th Driest
Driest since:
1988
82nd Wettest
Wettest since:
1993
Jan–Sep 1952
9-Month
25.58"
(649.73mm)
26.93"
(684.02mm)
-1.35"
(-34.29mm)
51st Driest
Driest since:
1988
78th Wettest
Wettest since:
1993
Dec 1951–Sep 1952
10-Month
26.55"
(674.37mm)
28.04"
(712.22mm)
-1.49"
(-37.85mm)
50th Driest
Driest since:
1988
78th Wettest
Wettest since:
1993
Nov 1951–Sep 1952
11-Month
27.84"
(707.14mm)
29.78"
(756.41mm)
-1.94"
(-49.27mm)
47th Driest
Driest since:
1934
81st Wettest
Wettest since:
1993
Oct 1951–Sep 1952
12-Month
31.11"
(790.19mm)
32.09"
(815.09mm)
-0.98"
(-24.90mm)
54th Driest
Driest since:
1934
74th Wettest
Wettest since:
1993
Apr 1951–Sep 1952
18-Month
60.34"
(1,532.64mm)
55.13"
(1,400.30mm)
5.21"
(132.34mm)
94th Driest
Driest since:
1934
34th Wettest
Wettest since:
1993
Ties: 1979
Oct 1950–Sep 1952
24-Month
70.13"
(1,781.30mm)
64.26"
(1,632.20mm)
5.87"
(149.10mm)
95th Driest
Driest since:
1956
32nd Wettest
Wettest since:
1993
Oct 1949–Sep 1952
36-Month
100.08"
(2,542.03mm)
96.36"
(2,447.54mm)
3.72"
(94.49mm)
83rd Driest
Driest since:
1957
43rd Wettest
Wettest since:
2010
Oct 1948–Sep 1952
48-Month
131.05"
(3,328.67mm)
128.36"
(3,260.34mm)
2.69"
(68.33mm)
72nd Driest
Driest since:
1958
53rd Wettest
Wettest since:
2010
Oct 1947–Sep 1952
60-Month
160.32"
(4,072.13mm)
160.34"
(4,072.64mm)
-0.02"
(-0.51mm)
60th Driest
Driest since:
1957
64th Wettest
Wettest since:
2010

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