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, December 1959

View Period (Months):
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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Wettest/Driest
Since
Record
December 1959
1-Month
1.77"
(44.96mm)
1.11"
(28.19mm)
0.66"
(16.77mm)
107th Driest
Driest since:
2002
21st Wettest
Wettest since:
2015
Nov–Dec 1959
2-Month
3.63"
(92.20mm)
2.87"
(72.90mm)
0.76"
(19.30mm)
96th Driest
Driest since:
1976
32nd Wettest
Wettest since:
2015
Ties: 1935
Oct–Dec 1959
3-Month
6.57"
(166.88mm)
5.16"
(131.06mm)
1.41"
(35.82mm)
96th Driest
Driest since:
1910
32nd Wettest
Wettest since:
1931
Sep–Dec 1959
4-Month
10.92"
(277.37mm)
8.83"
(224.28mm)
2.09"
(53.09mm)
96th Driest
Driest since:
1939, 1976
32nd Wettest
Wettest since:
1931
Aug–Dec 1959
5-Month
15.83"
(402.08mm)
12.67"
(321.82mm)
3.16"
(80.26mm)
105th Driest
Driest since:
1976
23rd Wettest
Wettest since:
2018
Jul–Dec 1959
6-Month
18.22"
(462.79mm)
16.52"
(419.61mm)
1.70"
(43.18mm)
87th Driest
Driest since:
1976
41st Wettest
Wettest since:
2018
Jun–Dec 1959
7-Month
22.27"
(565.66mm)
21.15"
(537.21mm)
1.12"
(28.45mm)
75th Driest
Driest since:
1976
53rd Wettest
Wettest since:
2018
May–Dec 1959
8-Month
29.85"
(758.19mm)
25.20"
(640.08mm)
4.65"
(118.11mm)
105th Driest
Driest since:
1976
23rd Wettest
Wettest since:
1993
Apr–Dec 1959
9-Month
32.68"
(830.07mm)
28.15"
(715.01mm)
4.53"
(115.06mm)
103rd Driest
Driest since:
1910
25th Wettest
Wettest since:
1993
Ties: 1903
Mar–Dec 1959
10-Month
35.91"
(912.11mm)
30.10"
(764.54mm)
5.81"
(147.57mm)
107th Driest
Driest since:
1910
21st Wettest
Wettest since:
1993
Feb–Dec 1959
11-Month
37.23"
(945.64mm)
31.12"
(790.45mm)
6.11"
(155.19mm)
107th Driest
Driest since:
1910
21st Wettest
Wettest since:
1993
Jan–Dec 1959
12-Month
38.00"
(965.20mm)
32.09"
(815.09mm)
5.91"
(150.11mm)
107th Driest
Driest since:
1910
21st Wettest
Wettest since:
1993
Jul 1958–Dec 1959
18-Month
53.50"
(1,358.90mm)
48.69"
(1,236.73mm)
4.81"
(122.17mm)
91st Driest
Driest since:
1956
36th Wettest
Wettest since:
1993
Jan 1958–Dec 1959
24-Month
63.33"
(1,608.58mm)
64.24"
(1,631.70mm)
-0.91"
(-23.12mm)
58th Driest
Driest since:
1989
69th Wettest
Wettest since:
2019
Jan 1957–Dec 1959
36-Month
94.85"
(2,409.19mm)
96.36"
(2,447.54mm)
-1.51"
(-38.35mm)
51st Driest
Driest since:
1957
75th Wettest
Wettest since:
2010
Jan 1956–Dec 1959
48-Month
119.13"
(3,025.90mm)
128.37"
(3,260.60mm)
-9.24"
(-234.70mm)
17th Driest
Driest since:
1958
108th Wettest
Wettest since:
2010
Jan 1955–Dec 1959
60-Month
142.10"
(3,609.34mm)
160.36"
(4,073.14mm)
-18.26"
(-463.80mm)
7th Driest
Driest since:
1956
117th Wettest
Wettest since:
2010

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