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, July 1922

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
July 1922
1-Month
6.38"
(162.05mm)
3.86"
(98.04mm)
2.52"
(64.01mm)
119th Driest
Driest since:
1936
10th Wettest
Wettest since:
1993
Jun–Jul 1922
2-Month
8.15"
(207.01mm)
8.49"
(215.65mm)
-0.34"
(-8.64mm)
61st Driest
Driest since:
1936
68th Wettest
Wettest since:
1993
May–Jul 1922
3-Month
11.62"
(295.15mm)
12.53"
(318.26mm)
-0.91"
(-23.11mm)
49th Driest
Driest since:
1988
80th Wettest
Wettest since:
1993
Ties: 1970
Apr–Jul 1922
4-Month
14.63"
(371.60mm)
15.48"
(393.19mm)
-0.85"
(-21.59mm)
54th Driest
Driest since:
1936
75th Wettest
Wettest since:
1993
Mar–Jul 1922
5-Month
16.53"
(419.86mm)
17.43"
(442.72mm)
-0.90"
(-22.86mm)
47th Driest
Driest since:
1936
82nd Wettest
Wettest since:
1993
Feb–Jul 1922
6-Month
18.11"
(459.99mm)
18.45"
(468.63mm)
-0.34"
(-8.64mm)
56th Driest
Driest since:
1988
73rd Wettest
Wettest since:
1993
Jan–Jul 1922
7-Month
18.95"
(481.33mm)
19.43"
(493.52mm)
-0.48"
(-12.19mm)
59th Driest
Driest since:
1988
70th Wettest
Wettest since:
1993
Dec 1921–Jul 1922
8-Month
19.99"
(507.75mm)
20.53"
(521.46mm)
-0.54"
(-13.71mm)
56th Driest
Driest since:
1988
72nd Wettest
Wettest since:
1993
Nov 1921–Jul 1922
9-Month
20.57"
(522.48mm)
22.27"
(565.66mm)
-1.70"
(-43.18mm)
42nd Driest
Driest since:
1934
86th Wettest
Wettest since:
1993
Oct 1921–Jul 1922
10-Month
22.53"
(572.26mm)
24.58"
(624.33mm)
-2.05"
(-52.07mm)
37th Driest
Driest since:
1934
91st Wettest
Wettest since:
1993
Sep 1921–Jul 1922
11-Month
29.22"
(742.19mm)
28.28"
(718.31mm)
0.94"
(23.88mm)
72nd Driest
Driest since:
1988
56th Wettest
Wettest since:
1993
Aug 1921–Jul 1922
12-Month
34.24"
(869.70mm)
32.14"
(816.36mm)
2.10"
(53.34mm)
84th Driest
Driest since:
1956
44th Wettest
Wettest since:
2008
Ties: 1971
Feb 1921–Jul 1922
18-Month
50.47"
(1,281.94mm)
50.60"
(1,285.24mm)
-0.13"
(-3.30mm)
62nd Driest
Driest since:
1911
66th Wettest
Wettest since:
2008
Aug 1920–Jul 1922
24-Month
63.09"
(1,602.49mm)
64.31"
(1,633.47mm)
-1.22"
(-30.98mm)
56th Driest
Driest since:
1934
71st Wettest
Wettest since:
2008
Ties: 1953
Aug 1919–Jul 1922
36-Month
97.09"
(2,466.09mm)
96.40"
(2,448.56mm)
0.69"
(17.53mm)
66th Driest
Driest since:
1956
60th Wettest
Wettest since:
2010
Aug 1918–Jul 1922
48-Month
130.70"
(3,319.78mm)
128.38"
(3,260.85mm)
2.32"
(58.93mm)
74th Driest
Driest since:
1957
51st Wettest
Wettest since:
2010
Aug 1917–Jul 1922
60-Month
158.34"
(4,021.84mm)
160.37"
(4,073.40mm)
-2.03"
(-51.56mm)
53rd Driest
Driest since:
1957
71st Wettest
Wettest since:
2011

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