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, August 1990

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
August 1990
1-Month
4.32"
(109.73mm)
3.84"
(97.54mm)
0.48"
(12.19mm)
86th Driest
Driest since:
1984
43rd Wettest
Wettest since:
2007
Ties: 1972
Jul–Aug 1990
2-Month
10.69"
(271.53mm)
7.70"
(195.58mm)
2.99"
(75.95mm)
111th Driest
Driest since:
1947
18th Wettest
Wettest since:
1993
Jun–Aug 1990
3-Month
18.65"
(473.71mm)
12.33"
(313.18mm)
6.32"
(160.53mm)
124th Driest
Driest since:
1927
5th Wettest
Wettest since:
1993
May–Aug 1990
4-Month
24.38"
(619.25mm)
16.38"
(416.05mm)
8.00"
(203.20mm)
125th Driest
Driest since:
1936
4th Wettest
Wettest since:
1993
Apr–Aug 1990
5-Month
26.64"
(676.66mm)
19.32"
(490.73mm)
7.32"
(185.93mm)
123rd Driest
Driest since:
1936
6th Wettest
Wettest since:
1993
Mar–Aug 1990
6-Month
30.94"
(785.88mm)
21.28"
(540.51mm)
9.66"
(245.37mm)
125th Driest
Driest since:
1936
4th Wettest
Wettest since:
1993
Ties: 1951
Feb–Aug 1990
7-Month
31.61"
(802.89mm)
22.29"
(566.17mm)
9.32"
(236.72mm)
124th Driest
Driest since:
1988
5th Wettest
Wettest since:
1993
Jan–Aug 1990
8-Month
32.49"
(825.25mm)
23.27"
(591.06mm)
9.22"
(234.19mm)
124th Driest
Driest since:
1988
5th Wettest
Wettest since:
1993
Dec 1989–Aug 1990
9-Month
32.85"
(834.39mm)
24.37"
(619.00mm)
8.48"
(215.39mm)
121st Driest
Driest since:
1988
7th Wettest
Wettest since:
1993
Nov 1989–Aug 1990
10-Month
33.12"
(841.25mm)
26.11"
(663.19mm)
7.01"
(178.06mm)
119th Driest
Driest since:
1934
9th Wettest
Wettest since:
1993
Oct 1989–Aug 1990
11-Month
35.04"
(890.02mm)
28.42"
(721.87mm)
6.62"
(168.15mm)
115th Driest
Driest since:
1934
13th Wettest
Wettest since:
1993
Sep 1989–Aug 1990
12-Month
39.88"
(1,012.95mm)
32.12"
(815.85mm)
7.76"
(197.10mm)
116th Driest
Driest since:
1934
12th Wettest
Wettest since:
1993
Mar 1989–Aug 1990
18-Month
55.72"
(1,415.29mm)
53.43"
(1,357.12mm)
2.29"
(58.17mm)
78th Driest
Driest since:
1911
50th Wettest
Wettest since:
1993
Sep 1988–Aug 1990
24-Month
64.85"
(1,647.19mm)
64.28"
(1,632.71mm)
0.57"
(14.48mm)
63rd Driest
Driest since:
1934
64th Wettest
Wettest since:
1993
Sep 1987–Aug 1990
36-Month
86.46"
(2,196.08mm)
96.39"
(2,448.31mm)
-9.93"
(-252.23mm)
16th Driest
Driest since:
1957
110th Wettest
Wettest since:
2010
Sep 1986–Aug 1990
48-Month
124.03"
(3,150.36mm)
128.37"
(3,260.60mm)
-4.34"
(-110.24mm)
35th Driest
Driest since:
1936
90th Wettest
Wettest since:
2010
Sep 1985–Aug 1990
60-Month
163.39"
(4,150.11mm)
160.37"
(4,073.40mm)
3.02"
(76.71mm)
69th Driest
Driest since:
1957
55th Wettest
Wettest since:
2011

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