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, October 1991

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
October 1991
1-Month
2.92"
(74.17mm)
2.29"
(58.17mm)
0.63"
(16.00mm)
81st Driest
Driest since:
1952
48th Wettest
Wettest since:
2009
Sep–Oct 1991
2-Month
5.71"
(145.03mm)
5.96"
(151.38mm)
-0.25"
(-6.35mm)
61st Driest
Driest since:
1952
68th Wettest
Wettest since:
1941
Ties: 1960
Aug–Oct 1991
3-Month
9.16"
(232.66mm)
9.80"
(248.92mm)
-0.64"
(-16.26mm)
55th Driest
Driest since:
1953
74th Wettest
Wettest since:
2018
Ties: 1962
Jul–Oct 1991
4-Month
11.48"
(291.59mm)
13.66"
(346.96mm)
-2.18"
(-55.37mm)
35th Driest
Driest since:
1953, 1976
94th Wettest
Wettest since:
1993
Jun–Oct 1991
5-Month
15.62"
(396.75mm)
18.29"
(464.57mm)
-2.67"
(-67.82mm)
35th Driest
Driest since:
1976
94th Wettest
Wettest since:
1993
May–Oct 1991
6-Month
20.81"
(528.57mm)
22.33"
(567.18mm)
-1.52"
(-38.61mm)
47th Driest
Driest since:
1976
82nd Wettest
Wettest since:
1993
Apr–Oct 1991
7-Month
26.64"
(676.66mm)
25.28"
(642.11mm)
1.36"
(34.55mm)
78th Driest
Driest since:
1988
51st Wettest
Wettest since:
1993
Mar–Oct 1991
8-Month
30.83"
(783.08mm)
27.23"
(691.64mm)
3.60"
(91.44mm)
98th Driest
Driest since:
1988
31st Wettest
Wettest since:
1993
Feb–Oct 1991
9-Month
31.13"
(790.70mm)
28.25"
(717.55mm)
2.88"
(73.15mm)
92nd Driest
Driest since:
1988
37th Wettest
Wettest since:
1993
Jan–Oct 1991
10-Month
31.90"
(810.26mm)
29.23"
(742.44mm)
2.67"
(67.82mm)
86th Driest
Driest since:
1988
43rd Wettest
Wettest since:
1993
Dec 1990–Oct 1991
11-Month
33.40"
(848.36mm)
30.33"
(770.38mm)
3.07"
(77.98mm)
86th Driest
Driest since:
1988
42nd Wettest
Wettest since:
1993
Nov 1990–Oct 1991
12-Month
35.05"
(890.27mm)
32.07"
(814.58mm)
2.98"
(75.69mm)
89th Driest
Driest since:
1956
39th Wettest
Wettest since:
1993
May 1990–Oct 1991
18-Month
62.70"
(1,592.58mm)
54.47"
(1,383.54mm)
8.23"
(209.04mm)
112th Driest
Driest since:
1956
16th Wettest
Wettest since:
2019
Nov 1989–Oct 1991
24-Month
71.44"
(1,814.58mm)
64.23"
(1,631.44mm)
7.21"
(183.14mm)
103rd Driest
Driest since:
1956
24th Wettest
Wettest since:
1993
Nov 1988–Oct 1991
36-Month
98.91"
(2,512.31mm)
96.34"
(2,447.04mm)
2.57"
(65.27mm)
77th Driest
Driest since:
1957
49th Wettest
Wettest since:
2010
Nov 1987–Oct 1991
48-Month
121.42"
(3,084.07mm)
128.36"
(3,260.34mm)
-6.94"
(-176.27mm)
25th Driest
Driest since:
1958
100th Wettest
Wettest since:
2010
Nov 1986–Oct 1991
60-Month
151.79"
(3,855.47mm)
160.34"
(4,072.64mm)
-8.55"
(-217.17mm)
19th Driest
Driest since:
1956
105th Wettest
Wettest since:
2010

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