Climate at a Glance

Statewide Rankings

Look up monthly rankings for 1-12, 18, 24, 36, 48, and 60-month time periods using the options below. Data and statistics are as of August 2021. For more information, please see Climatological Rankings.


Iowa

Precipitation Rankings, December 2018

View Period (Months):All1234567891011121824364860
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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Wettest/Driest
Since
Record
December 2018
1-Month
2.10"
(53.34mm)
1.11"
(28.19mm)
0.99"
(25.15mm)
118th Driest Driest since: 2017 2002
9th Wettest Wettest since: 2015 2015
Ties: 1984
Nov–Dec 2018
2-Month
3.91"
(99.31mm)
2.87"
(72.90mm)
1.04"
(26.41mm)
103rd Driest Driest since: 2017 1976
24th Wettest Wettest since: 2015 2015
Ties: 1952
Oct–Dec 2018
3-Month
8.54"
(216.92mm)
5.16"
(131.06mm)
3.38"
(85.86mm)
116th Driest Driest since: 2017 1910
11th Wettest Wettest since: 2015 1931
Sep–Dec 2018
4-Month
16.64"
(422.66mm)
8.83"
(224.28mm)
7.81"
(198.38mm)
124th Driest Driest since: 2017 1939, 1976
3rd Wettest Wettest since: 1941 1931
Aug–Dec 2018
5-Month
23.06"
(585.72mm)
12.67"
(321.82mm)
10.39"
(263.90mm)
126th Driest Driest since: 2017 1976
1st Wettest Wettest to Date 2018
Jul–Dec 2018
6-Month
26.45"
(671.83mm)
16.52"
(419.61mm)
9.93"
(252.22mm)
126th Driest Driest since: 2017 1976
1st Wettest Wettest to Date 2018
Jun–Dec 2018
7-Month
34.00"
(863.60mm)
21.15"
(537.21mm)
12.85"
(326.39mm)
126th Driest Driest since: 2017 1976
1st Wettest Wettest to Date 2018
May–Dec 2018
8-Month
38.70"
(982.98mm)
25.20"
(640.08mm)
13.50"
(342.90mm)
124th Driest Driest since: 2017 1976
3rd Wettest Wettest since: 1993 1993
Apr–Dec 2018
9-Month
40.24"
(1,022.10mm)
28.15"
(715.01mm)
12.09"
(307.09mm)
123rd Driest Driest since: 2017 1910
4th Wettest Wettest since: 2015 1993
Mar–Dec 2018
10-Month
42.52"
(1,080.01mm)
30.10"
(764.54mm)
12.42"
(315.47mm)
125th Driest Driest since: 2017 1910
2nd Wettest Wettest since: 1993 1993
Feb–Dec 2018
11-Month
44.06"
(1,119.12mm)
31.12"
(790.45mm)
12.94"
(328.67mm)
125th Driest Driest since: 2017 1910
2nd Wettest Wettest since: 1993 1993
Jan–Dec 2018
12-Month
45.08"
(1,145.03mm)
32.09"
(815.09mm)
12.99"
(329.94mm)
125th Driest Driest since: 2017 1910
2nd Wettest Wettest since: 1993 1993
Jul 2017–Dec 2018
18-Month
60.22"
(1,529.59mm)
48.69"
(1,236.73mm)
11.53"
(292.86mm)
115th Driest Driest since: 2017 1956
11th Wettest Wettest since: 2016 1993
Jan 2017–Dec 2018
24-Month
77.44"
(1,966.98mm)
64.24"
(1,631.70mm)
13.20"
(335.28mm)
115th Driest Driest since: 2017 1989
11th Wettest Wettest since: 2016 2019
Jan 2016–Dec 2018
36-Month
115.54"
(2,934.72mm)
96.36"
(2,447.54mm)
19.18"
(487.18mm)
116th Driest Driest since: 2017 1957
9th Wettest Wettest since: 2016 2010
Jan 2015–Dec 2018
48-Month
158.07"
(4,014.98mm)
128.37"
(3,260.60mm)
29.70"
(754.38mm)
121st Driest Driest since: 2017 1958
3rd Wettest Wettest since: 2010 2010
Jan 2014–Dec 2018
60-Month
196.76"
(4,997.70mm)
160.36"
(4,073.14mm)
36.40"
(924.56mm)
119th Driest Driest since: 2017 1956
4th Wettest Wettest since: 2011 2010

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published September 2021, retrieved on September 23, 2021 from https://www.ncdc.noaa.gov/cag/