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 December 2021. For more information, please see Climatological Rankings.


Iowa

Precipitation Rankings, September 1990

View Period (Months):All1234567891011121824364860
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Wettest/Driest
Since
Record
September 1990
1-Month
1.39"
(35.31mm)
3.67"
(93.22mm)
-2.28"
(-57.91mm)
7th Driest Driest since: 1953 1939
121st Wettest Wettest since: 1989 1965
Aug–Sep 1990
2-Month
5.71"
(145.03mm)
7.51"
(190.75mm)
-1.80"
(-45.72mm)
31st Driest Driest since: 1984 1976
97th Wettest Wettest since: 1989 2018
Jul–Sep 1990
3-Month
12.08"
(306.83mm)
11.36"
(288.54mm)
0.72"
(18.29mm)
84th Driest Driest since: 1989 2013
44th Wettest Wettest since: 1987 1993
Jun–Sep 1990
4-Month
20.04"
(509.02mm)
16.00"
(406.40mm)
4.04"
(102.62mm)
113th Driest Driest since: 1989 2012
15th Wettest Wettest since: 1986 1993
May–Sep 1990
5-Month
25.77"
(654.56mm)
20.04"
(509.02mm)
5.73"
(145.54mm)
115th Driest Driest since: 1989 1976
13th Wettest Wettest since: 1986 1993
Apr–Sep 1990
6-Month
28.03"
(711.96mm)
22.99"
(583.95mm)
5.04"
(128.01mm)
109th Driest Driest since: 1989 1988
19th Wettest Wettest since: 1986 1993
Mar–Sep 1990
7-Month
32.33"
(821.18mm)
24.94"
(633.48mm)
7.39"
(187.70mm)
118th Driest Driest since: 1989 1988
10th Wettest Wettest since: 1986 1993
Feb–Sep 1990
8-Month
33.00"
(838.20mm)
25.96"
(659.38mm)
7.04"
(178.82mm)
115th Driest Driest since: 1989 1988
13th Wettest Wettest since: 1986 1993
Jan–Sep 1990
9-Month
33.88"
(860.55mm)
26.93"
(684.02mm)
6.95"
(176.53mm)
115th Driest Driest since: 1989 1988
13th Wettest Wettest since: 1986 1993
Dec 1989–Sep 1990
10-Month
34.24"
(869.70mm)
28.04"
(712.22mm)
6.20"
(157.48mm)
111th Driest Driest since: 1989 1988
16th Wettest Wettest since: 1986 1993
Nov 1989–Sep 1990
11-Month
34.51"
(876.55mm)
29.78"
(756.41mm)
4.73"
(120.14mm)
106th Driest Driest since: 1989 1934
21st Wettest Wettest since: 1986 1993
Oct 1989–Sep 1990
12-Month
36.43"
(925.32mm)
32.09"
(815.09mm)
4.34"
(110.23mm)
100th Driest Driest since: 1989 1934
27th Wettest Wettest since: 1986 1993
Apr 1989–Sep 1990
18-Month
56.21"
(1,427.73mm)
55.13"
(1,400.30mm)
1.08"
(27.43mm)
69th Driest Driest since: 1989 1934
58th Wettest Wettest since: 1987 1993
Oct 1988–Sep 1990
24-Month
62.63"
(1,590.80mm)
64.26"
(1,632.20mm)
-1.63"
(-41.40mm)
52nd Driest Driest since: 1989 1956
74th Wettest Wettest since: 1987 1993
Oct 1987–Sep 1990
36-Month
85.27"
(2,165.86mm)
96.36"
(2,447.54mm)
-11.09"
(-281.68mm)
9th Driest Driest since: 1989 1957
116th Wettest Wettest since: 1988 2010
Oct 1986–Sep 1990
48-Month
118.63"
(3,013.20mm)
128.36"
(3,260.34mm)
-9.73"
(-247.14mm)
16th Driest Driest since: 1959 1958
108th Wettest Wettest since: 1989 2010
Oct 1985–Sep 1990
60-Month
159.47"
(4,050.54mm)
160.34"
(4,072.64mm)
-0.87"
(-22.10mm)
57th Driest Driest since: 1989 1957
66th Wettest Wettest since: 1988 2010

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published January 2022, retrieved on January 23, 2022 from https://www.ncdc.noaa.gov/cag/