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 1966

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PeriodValue1901-2000
Mean
AnomalyRank
(1895-2022)
Wettest/Driest
Since
Record
May 1966
1-Month
5.05"
(128.27mm)
4.04"
(102.62mm)
1.01"
(25.65mm)
92nd Driest
Driest since:
1992
37th Wettest
Wettest since:
1996
Apr–May 1966
2-Month
8.61"
(218.69mm)
7.38"
(187.45mm)
1.23"
(31.24mm)
83rd Driest
Driest since:
1956
46th Wettest
Wettest since:
2013
Mar–May 1966
3-Month
10.11"
(256.79mm)
9.74"
(247.40mm)
0.37"
(9.39mm)
66th Driest
Driest since:
1956
63rd Wettest
Wettest since:
1973
Feb–May 1966
4-Month
10.65"
(270.51mm)
10.97"
(278.64mm)
-0.32"
(-8.13mm)
56th Driest
Driest since:
1956
73rd Wettest
Wettest since:
1973
Jan–May 1966
5-Month
11.70"
(297.18mm)
12.29"
(312.17mm)
-0.59"
(-14.99mm)
50th Driest
Driest since:
1956
79th Wettest
Wettest since:
1973
Dec 1965–May 1966
6-Month
14.22"
(361.19mm)
13.78"
(350.01mm)
0.44"
(11.18mm)
63rd Driest
Driest since:
1956
65th Wettest
Wettest since:
1973
Nov 1965–May 1966
7-Month
15.80"
(401.32mm)
15.90"
(403.86mm)
-0.10"
(-2.54mm)
64th Driest
Driest since:
1956
64th Wettest
Wettest since:
1973
Ties: 1985
Oct 1965–May 1966
8-Month
16.58"
(421.13mm)
18.53"
(470.66mm)
-1.95"
(-49.53mm)
35th Driest
Driest since:
1956
93rd Wettest
Wettest since:
2019
Sep 1965–May 1966
9-Month
25.96"
(659.38mm)
22.45"
(570.23mm)
3.51"
(89.15mm)
98th Driest
Driest since:
1956
30th Wettest
Wettest since:
2019
Aug 1965–May 1966
10-Month
32.72"
(831.09mm)
26.20"
(665.48mm)
6.52"
(165.61mm)
111th Driest
Driest since:
1956
17th Wettest
Wettest since:
2019
Jul 1965–May 1966
11-Month
37.60"
(955.04mm)
30.18"
(766.57mm)
7.42"
(188.47mm)
111th Driest
Driest since:
1956
17th Wettest
Wettest since:
2019
Jun 1965–May 1966
12-Month
41.12"
(1,044.45mm)
34.73"
(882.14mm)
6.39"
(162.31mm)
107th Driest
Driest since:
1956
21st Wettest
Wettest since:
1903
Dec 1964–May 1966
18-Month
58.31"
(1,481.07mm)
48.55"
(1,233.17mm)
9.76"
(247.90mm)
111th Driest
Driest since:
1902
16th Wettest
Wettest since:
1974
Jun 1964–May 1966
24-Month
74.63"
(1,895.60mm)
69.46"
(1,764.28mm)
5.17"
(131.32mm)
86th Driest
Driest since:
1957
41st Wettest
Wettest since:
2011
Jun 1963–May 1966
36-Month
102.85"
(2,612.39mm)
104.12"
(2,644.65mm)
-1.27"
(-32.26mm)
54th Driest
Driest since:
1958
72nd Wettest
Wettest since:
2011
Jun 1962–May 1966
48-Month
132.12"
(3,355.85mm)
138.68"
(3,522.47mm)
-6.56"
(-166.62mm)
35th Driest
Driest since:
1957
90th Wettest
Wettest since:
2011
Ties: 1934
Jun 1961–May 1966
60-Month
175.69"
(4,462.53mm)
173.32"
(4,402.33mm)
2.37"
(60.20mm)
66th Driest
Driest since:
1958
58th Wettest
Wettest since:
2011

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