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 1929

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
May 1929
1-Month
1.86"
(47.24mm)
4.04"
(102.62mm)
-2.18"
(-55.38mm)
11th Driest
Driest since:
1992
118th Wettest
Wettest since:
1996
Apr–May 1929
2-Month
8.26"
(209.80mm)
7.38"
(187.45mm)
0.88"
(22.35mm)
75th Driest
Driest since:
1956
54th Wettest
Wettest since:
2013
Mar–May 1929
3-Month
10.81"
(274.57mm)
9.74"
(247.40mm)
1.07"
(27.17mm)
74th Driest
Driest since:
1956
55th Wettest
Wettest since:
1973
Feb–May 1929
4-Month
11.81"
(299.97mm)
10.97"
(278.64mm)
0.84"
(21.33mm)
76th Driest
Driest since:
1956
53rd Wettest
Wettest since:
1973
Jan–May 1929
5-Month
14.37"
(365.00mm)
12.29"
(312.17mm)
2.08"
(52.83mm)
98th Driest
Driest since:
1956
31st Wettest
Wettest since:
1973
Dec 1928–May 1929
6-Month
15.71"
(399.03mm)
13.78"
(350.01mm)
1.93"
(49.02mm)
89th Driest
Driest since:
1956
39th Wettest
Wettest since:
1973
Nov 1928–May 1929
7-Month
20.52"
(521.21mm)
15.90"
(403.86mm)
4.62"
(117.35mm)
114th Driest
Driest since:
1956
14th Wettest
Wettest to Date
1973
Oct 1928–May 1929
8-Month
24.97"
(634.24mm)
18.53"
(470.66mm)
6.44"
(163.58mm)
118th Driest
Driest since:
1956
10th Wettest
Wettest to Date
2019
Sep 1928–May 1929
9-Month
29.10"
(739.14mm)
22.45"
(570.23mm)
6.65"
(168.91mm)
114th Driest
Driest since:
1956
14th Wettest
Wettest since:
2019
Aug 1928–May 1929
10-Month
34.47"
(875.54mm)
26.20"
(665.48mm)
8.27"
(210.06mm)
117th Driest
Driest since:
1956
11th Wettest
Wettest since:
2019
Jul 1928–May 1929
11-Month
40.16"
(1,020.06mm)
30.18"
(766.57mm)
9.98"
(253.49mm)
119th Driest
Driest since:
1956
9th Wettest
Wettest since:
2019
Jun 1928–May 1929
12-Month
47.70"
(1,211.58mm)
34.73"
(882.14mm)
12.97"
(329.44mm)
122nd Driest
Driest since:
1956
6th Wettest
Wettest since:
1903
Dec 1927–May 1929
18-Month
57.74"
(1,466.60mm)
48.55"
(1,233.17mm)
9.19"
(233.43mm)
110th Driest
Driest since:
1902
17th Wettest
Wettest since:
1974
Ties: 1996
Jun 1927–May 1929
24-Month
77.80"
(1,976.12mm)
69.46"
(1,764.28mm)
8.34"
(211.84mm)
100th Driest
Driest since:
1957
27th Wettest
Wettest since:
2011
Jun 1926–May 1929
36-Month
127.97"
(3,250.44mm)
104.12"
(2,644.65mm)
23.85"
(605.79mm)
121st Driest
Driest since:
1958
5th Wettest
Wettest to Date
2011
Jun 1925–May 1929
48-Month
163.33"
(4,148.58mm)
138.68"
(3,522.47mm)
24.65"
(626.11mm)
118th Driest
Driest since:
1957
7th Wettest
Wettest to Date
2011
Jun 1924–May 1929
60-Month
199.42"
(5,065.27mm)
173.32"
(4,402.33mm)
26.10"
(662.94mm)
115th Driest
Driest since:
1958
9th Wettest
Wettest to Date
2011

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