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 1931

View Period (Months):
Download: csv json xml
  • Record Driest
  • Bottom 1/10
  • Bottom 1/3
  • Normal
  • Top 1/3
  • Top 1/10
  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Wettest/Driest
Since
Record
December 1931
1-Month
2.40"
(60.96mm)
1.11"
(28.19mm)
1.29"
(32.77mm)
122nd Driest
Driest since:
2002
6th Wettest
Wettest since:
2015
Nov–Dec 1931
2-Month
8.15"
(207.01mm)
2.87"
(72.90mm)
5.28"
(134.11mm)
126th Driest
Driest since:
1976
2nd Wettest
Wettest to Date
2015
Oct–Dec 1931
3-Month
11.12"
(282.45mm)
5.16"
(131.06mm)
5.96"
(151.39mm)
127th Driest
Driest since:
1910
1st Wettest
Wettest to Date
1931
Sep–Dec 1931
4-Month
17.86"
(453.64mm)
8.83"
(224.28mm)
9.03"
(229.36mm)
127th Driest
Driest since:
1939, 1976
1st Wettest
Wettest to Date
1931
Aug–Dec 1931
5-Month
21.00"
(533.40mm)
12.67"
(321.82mm)
8.33"
(211.58mm)
126th Driest
Driest since:
1976
2nd Wettest
Wettest to Date
2018
Jul–Dec 1931
6-Month
23.61"
(599.69mm)
16.52"
(419.61mm)
7.09"
(180.08mm)
119th Driest
Driest since:
1976
9th Wettest
Wettest since:
2018
Jun–Dec 1931
7-Month
27.06"
(687.32mm)
21.15"
(537.21mm)
5.91"
(150.11mm)
116th Driest
Driest since:
1976
12th Wettest
Wettest since:
2018
May–Dec 1931
8-Month
29.97"
(761.24mm)
25.20"
(640.08mm)
4.77"
(121.16mm)
107th Driest
Driest since:
1976
21st Wettest
Wettest since:
1993
Apr–Dec 1931
9-Month
32.24"
(818.90mm)
28.15"
(715.01mm)
4.09"
(103.89mm)
100th Driest
Driest since:
1910
28th Wettest
Wettest since:
1993
Mar–Dec 1931
10-Month
33.87"
(860.30mm)
30.10"
(764.54mm)
3.77"
(95.76mm)
94th Driest
Driest since:
1910
34th Wettest
Wettest since:
1993
Feb–Dec 1931
11-Month
34.10"
(866.14mm)
31.12"
(790.45mm)
2.98"
(75.69mm)
88th Driest
Driest since:
1910
40th Wettest
Wettest since:
1993
Jan–Dec 1931
12-Month
34.60"
(878.84mm)
32.09"
(815.09mm)
2.51"
(63.75mm)
86th Driest
Driest since:
1910
42nd Wettest
Wettest since:
1993
Jul 1930–Dec 1931
18-Month
45.65"
(1,159.51mm)
48.69"
(1,236.73mm)
-3.04"
(-77.22mm)
38th Driest
Driest since:
1956
89th Wettest
Wettest since:
1993
Jan 1930–Dec 1931
24-Month
60.69"
(1,541.53mm)
64.24"
(1,631.70mm)
-3.55"
(-90.17mm)
40th Driest
Driest since:
1989
87th Wettest
Wettest since:
2019
Jan 1929–Dec 1931
36-Month
90.14"
(2,289.56mm)
96.36"
(2,447.54mm)
-6.22"
(-157.98mm)
26th Driest
Driest since:
1957
100th Wettest
Wettest since:
2010
Jan 1928–Dec 1931
48-Month
125.61"
(3,190.49mm)
128.37"
(3,260.60mm)
-2.76"
(-70.11mm)
43rd Driest
Driest since:
1958
82nd Wettest
Wettest since:
2010
Jan 1927–Dec 1931
60-Month
154.91"
(3,934.71mm)
160.36"
(4,073.14mm)
-5.45"
(-138.43mm)
31st Driest
Driest since:
1956
93rd Wettest
Wettest since:
2010

Citing This Page