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 2009

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 2009
1-Month
6.35"
(161.29mm)
2.29"
(58.17mm)
4.06"
(103.12mm)
128th Driest
Driest since:
1952
1st Wettest
Wettest to Date
2009
Sep–Oct 2009
2-Month
8.08"
(205.23mm)
5.96"
(151.38mm)
2.12"
(53.85mm)
106th Driest
Driest since:
1952
23rd Wettest
Wettest since:
1941
Aug–Oct 2009
3-Month
13.83"
(351.28mm)
9.80"
(248.92mm)
4.03"
(102.36mm)
118th Driest
Driest since:
1953
11th Wettest
Wettest since:
2018
Jul–Oct 2009
4-Month
18.45"
(468.63mm)
13.66"
(346.96mm)
4.79"
(121.67mm)
115th Driest
Driest since:
1953, 1976
14th Wettest
Wettest since:
1993
Jun–Oct 2009
5-Month
23.74"
(603.00mm)
18.29"
(464.57mm)
5.45"
(138.43mm)
118th Driest
Driest since:
1976
11th Wettest
Wettest since:
1993
May–Oct 2009
6-Month
27.38"
(695.45mm)
22.33"
(567.18mm)
5.05"
(128.27mm)
111th Driest
Driest since:
1976
18th Wettest
Wettest since:
1993
Apr–Oct 2009
7-Month
30.98"
(786.89mm)
25.28"
(642.11mm)
5.70"
(144.78mm)
110th Driest
Driest since:
1988
19th Wettest
Wettest since:
1993
Mar–Oct 2009
8-Month
33.95"
(862.33mm)
27.23"
(691.64mm)
6.72"
(170.69mm)
114th Driest
Driest since:
1988
15th Wettest
Wettest since:
1993
Feb–Oct 2009
9-Month
34.74"
(882.40mm)
28.25"
(717.55mm)
6.49"
(164.85mm)
113th Driest
Driest since:
1988
16th Wettest
Wettest since:
1993
Jan–Oct 2009
10-Month
35.42"
(899.67mm)
29.23"
(742.44mm)
6.19"
(157.23mm)
113th Driest
Driest since:
1988
16th Wettest
Wettest since:
1993
Dec 2008–Oct 2009
11-Month
37.30"
(947.42mm)
30.33"
(770.38mm)
6.97"
(177.04mm)
112th Driest
Driest since:
1988
16th Wettest
Wettest since:
1993
Nov 2008–Oct 2009
12-Month
39.02"
(991.11mm)
32.07"
(814.58mm)
6.95"
(176.53mm)
113th Driest
Driest since:
1956
15th Wettest
Wettest since:
1993
May 2008–Oct 2009
18-Month
68.83"
(1,748.28mm)
54.47"
(1,383.54mm)
14.36"
(364.74mm)
120th Driest
Driest since:
1956
8th Wettest
Wettest since:
2019
Nov 2007–Oct 2009
24-Month
80.96"
(2,056.38mm)
64.23"
(1,631.44mm)
16.73"
(424.94mm)
122nd Driest
Driest since:
1956
5th Wettest
Wettest since:
1993
Nov 2006–Oct 2009
36-Month
124.61"
(3,165.09mm)
96.34"
(2,447.04mm)
28.27"
(718.05mm)
124th Driest
Driest since:
1957
2nd Wettest
Wettest to Date
2010
Nov 2005–Oct 2009
48-Month
156.07"
(3,964.18mm)
128.36"
(3,260.34mm)
27.71"
(703.84mm)
120th Driest
Driest since:
1958
5th Wettest
Wettest since:
2010
Nov 2004–Oct 2009
60-Month
185.78"
(4,718.81mm)
160.34"
(4,072.64mm)
25.44"
(646.17mm)
114th Driest
Driest since:
1956
10th Wettest
Wettest since:
2010

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