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


Iowa

Precipitation Rankings, September 1991

View Period (Months):All1234567891011121824364860
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Wettest/Driest
Since
Record
September 1991
1-Month
2.79"
(70.87mm)
3.67"
(93.22mm)
-0.88"
(-22.35mm)
48th Driest Driest since: 1990 1939
80th Wettest Wettest since: 1989 1965
Aug–Sep 1991
2-Month
6.24"
(158.50mm)
7.51"
(190.75mm)
-1.27"
(-32.25mm)
41st Driest Driest since: 1990 1976
87th Wettest Wettest since: 1989 2018
Jul–Sep 1991
3-Month
8.56"
(217.42mm)
11.36"
(288.54mm)
-2.80"
(-71.12mm)
23rd Driest Driest since: 1984 2013
105th Wettest Wettest since: 1990 1993
Jun–Sep 1991
4-Month
12.70"
(322.58mm)
16.00"
(406.40mm)
-3.30"
(-83.82mm)
19th Driest Driest since: 1988 2012
109th Wettest Wettest since: 1990 1993
May–Sep 1991
5-Month
17.89"
(454.41mm)
20.04"
(509.02mm)
-2.15"
(-54.61mm)
40th Driest Driest since: 1989 1976
88th Wettest Wettest since: 1990 1993
Apr–Sep 1991
6-Month
23.72"
(602.49mm)
22.99"
(583.95mm)
0.73"
(18.54mm)
72nd Driest Driest since: 1989 1988
56th Wettest Wettest since: 1990 1993
Mar–Sep 1991
7-Month
27.91"
(708.91mm)
24.94"
(633.48mm)
2.97"
(75.43mm)
97th Driest Driest since: 1989 1988
31st Wettest Wettest since: 1990 1993
Feb–Sep 1991
8-Month
28.21"
(716.53mm)
25.96"
(659.38mm)
2.25"
(57.15mm)
87th Driest Driest since: 1989 1988
41st Wettest Wettest since: 1990 1993
Jan–Sep 1991
9-Month
28.98"
(736.09mm)
26.93"
(684.02mm)
2.05"
(52.07mm)
85th Driest Driest since: 1989 1988
43rd Wettest Wettest since: 1990 1993
Dec 1990–Sep 1991
10-Month
30.48"
(774.19mm)
28.04"
(712.22mm)
2.44"
(61.97mm)
90th Driest Driest since: 1989 1988
37th Wettest Wettest since: 1990 1993
Ties: 1919
Nov 1990–Sep 1991
11-Month
32.13"
(816.10mm)
29.78"
(756.41mm)
2.35"
(59.69mm)
88th Driest Driest since: 1989 1934
39th Wettest Wettest since: 1990 1993
Oct 1990–Sep 1991
12-Month
34.01"
(863.85mm)
32.09"
(815.09mm)
1.92"
(48.76mm)
84th Driest Driest since: 1989 1934
43rd Wettest Wettest since: 1990 1993
Apr 1990–Sep 1991
18-Month
62.04"
(1,575.82mm)
55.13"
(1,400.30mm)
6.91"
(175.52mm)
104th Driest Driest since: 1990 1934
23rd Wettest Wettest since: 1987 1993
Oct 1989–Sep 1991
24-Month
70.44"
(1,789.18mm)
64.26"
(1,632.20mm)
6.18"
(156.98mm)
98th Driest Driest since: 1990 1956
28th Wettest Wettest since: 1987 1993
Oct 1988–Sep 1991
36-Month
96.64"
(2,454.66mm)
96.36"
(2,447.54mm)
0.28"
(7.12mm)
62nd Driest Driest since: 1990 1957
63rd Wettest Wettest since: 1988 2010
Oct 1987–Sep 1991
48-Month
119.28"
(3,029.71mm)
128.36"
(3,260.34mm)
-9.08"
(-230.63mm)
19th Driest Driest since: 1990 1958
105th Wettest Wettest since: 1989 2010
Oct 1986–Sep 1991
60-Month
152.64"
(3,877.06mm)
160.34"
(4,072.64mm)
-7.70"
(-195.58mm)
23rd Driest Driest since: 1960 1957
100th Wettest Wettest since: 1990 2010

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published November 2021, retrieved on December 1, 2021 from https://www.ncdc.noaa.gov/cag/