Divisional Rankings

Divisional 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, Climate Division 9. Southeast

Precipitation Rankings, May 1933

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PeriodValue1901-2000
Mean
AnomalyRank
(1895-2022)
Wettest/Driest
Since
Record
May 1933
1-Month
6.70"
(170.18mm)
4.04"
(102.62mm)
2.66"
(67.56mm)
115th Driest
Driest since:
1992
14th Wettest
Wettest since:
1996
Apr–May 1933
2-Month
8.40"
(213.36mm)
7.38"
(187.45mm)
1.02"
(25.91mm)
76th Driest
Driest since:
1956
53rd Wettest
Wettest since:
2013
Mar–May 1933
3-Month
11.09"
(281.69mm)
9.74"
(247.40mm)
1.35"
(34.29mm)
79th Driest
Driest since:
1956
50th Wettest
Wettest since:
1973
Feb–May 1933
4-Month
11.47"
(291.34mm)
10.97"
(278.64mm)
0.50"
(12.70mm)
69th Driest
Driest since:
1956
60th Wettest
Wettest since:
1973
Jan–May 1933
5-Month
12.82"
(325.63mm)
12.29"
(312.17mm)
0.53"
(13.46mm)
65th Driest
Driest since:
1956
64th Wettest
Wettest since:
1973
Dec 1932–May 1933
6-Month
15.14"
(384.56mm)
13.78"
(350.01mm)
1.36"
(34.55mm)
82nd Driest
Driest since:
1956
46th Wettest
Wettest since:
1973
Nov 1932–May 1933
7-Month
16.83"
(427.48mm)
15.90"
(403.86mm)
0.93"
(23.62mm)
73rd Driest
Driest since:
1956
55th Wettest
Wettest since:
1973
Oct 1932–May 1933
8-Month
20.07"
(509.78mm)
18.53"
(470.66mm)
1.54"
(39.12mm)
84th Driest
Driest since:
1956
44th Wettest
Wettest since:
2019
Ties: 1976
Sep 1932–May 1933
9-Month
21.35"
(542.29mm)
22.45"
(570.23mm)
-1.10"
(-27.94mm)
53rd Driest
Driest since:
1956
75th Wettest
Wettest since:
2019
Aug 1932–May 1933
10-Month
29.54"
(750.32mm)
26.20"
(665.48mm)
3.34"
(84.84mm)
93rd Driest
Driest since:
1956
35th Wettest
Wettest since:
2019
Jul 1932–May 1933
11-Month
34.52"
(876.81mm)
30.18"
(766.57mm)
4.34"
(110.24mm)
98th Driest
Driest since:
1956
30th Wettest
Wettest since:
2019
Jun 1932–May 1933
12-Month
41.04"
(1,042.42mm)
34.73"
(882.14mm)
6.31"
(160.28mm)
105th Driest
Driest since:
1956
23rd Wettest
Wettest since:
1903
Dec 1931–May 1933
18-Month
52.79"
(1,340.87mm)
48.55"
(1,233.17mm)
4.24"
(107.70mm)
90th Driest
Driest since:
1902
37th Wettest
Wettest since:
1974
Ties: 1899
Jun 1931–May 1933
24-Month
80.17"
(2,036.32mm)
69.46"
(1,764.28mm)
10.71"
(272.04mm)
108th Driest
Driest since:
1957
19th Wettest
Wettest since:
2011
Jun 1930–May 1933
36-Month
110.98"
(2,818.89mm)
104.12"
(2,644.65mm)
6.86"
(174.24mm)
89th Driest
Driest since:
1958
37th Wettest
Wettest since:
2011
Jun 1929–May 1933
48-Month
141.74"
(3,600.20mm)
138.68"
(3,522.47mm)
3.06"
(77.73mm)
70th Driest
Driest since:
1957
55th Wettest
Wettest since:
2011
Jun 1928–May 1933
60-Month
189.44"
(4,811.78mm)
173.32"
(4,402.33mm)
16.12"
(409.45mm)
98th Driest
Driest since:
1958
26th Wettest
Wettest since:
2011

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