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 2022. For more information, please see Climatological Rankings.


Iowa

Precipitation Rankings, August 1999

View Period (Months):All1234567891011121824364860
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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
August 1999
1-Month
3.11"
(78.99mm)
3.84"
(97.54mm)
-0.73"
(-18.55mm)
45th Driest Driest since: 1997 1984
84th Wettest Wettest since: 1998 2007
Jul–Aug 1999
2-Month
8.32"
(211.33mm)
7.70"
(195.58mm)
0.62"
(15.75mm)
82nd Driest Driest since: 1998 1947
47th Wettest Wettest since: 1993 1993
Jun–Aug 1999
3-Month
13.61"
(345.69mm)
12.33"
(313.18mm)
1.28"
(32.51mm)
91st Driest Driest since: 1997 1927
38th Wettest Wettest since: 1998 1993
May–Aug 1999
4-Month
18.50"
(469.90mm)
16.38"
(416.05mm)
2.12"
(53.85mm)
93rd Driest Driest since: 1997 1936
36th Wettest Wettest since: 1998 1993
Apr–Aug 1999
5-Month
24.76"
(628.90mm)
19.32"
(490.73mm)
5.44"
(138.17mm)
116th Driest Driest since: 1998 1936
13th Wettest Wettest since: 1993 1993
Mar–Aug 1999
6-Month
25.74"
(653.80mm)
21.28"
(540.51mm)
4.46"
(113.29mm)
108th Driest Driest since: 1997 1936
21st Wettest Wettest since: 1998 1993
Feb–Aug 1999
7-Month
26.65"
(676.91mm)
22.29"
(566.17mm)
4.36"
(110.74mm)
109th Driest Driest since: 1997 1988
20th Wettest Wettest since: 1998 1993
Jan–Aug 1999
8-Month
27.94"
(709.68mm)
23.27"
(591.06mm)
4.67"
(118.62mm)
112th Driest Driest since: 1997 1988
17th Wettest Wettest since: 1998 1993
Dec 1998–Aug 1999
9-Month
28.36"
(720.34mm)
24.37"
(619.00mm)
3.99"
(101.34mm)
102nd Driest Driest since: 1997 1988
26th Wettest Wettest since: 1998 1993
Nov 1998–Aug 1999
10-Month
29.97"
(761.24mm)
26.11"
(663.19mm)
3.86"
(98.05mm)
101st Driest Driest since: 1997 1934
27th Wettest Wettest since: 1998 1993
Oct 1998–Aug 1999
11-Month
34.80"
(883.92mm)
28.42"
(721.87mm)
6.38"
(162.05mm)
114th Driest Driest since: 1997 1934
14th Wettest Wettest since: 1998 1993
Sep 1998–Aug 1999
12-Month
36.86"
(936.24mm)
32.12"
(815.85mm)
4.74"
(120.39mm)
102nd Driest Driest since: 1997 1934
26th Wettest Wettest since: 1998 1993
Mar 1998–Aug 1999
18-Month
64.83"
(1,646.68mm)
53.43"
(1,357.12mm)
11.40"
(289.56mm)
117th Driest Driest since: 1998 1911
11th Wettest Wettest since: 1994 1993
Sep 1997–Aug 1999
24-Month
76.01"
(1,930.65mm)
64.28"
(1,632.71mm)
11.73"
(297.94mm)
112th Driest Driest since: 1998 1934
15th Wettest Wettest since: 1994 1993
Sep 1996–Aug 1999
36-Month
105.86"
(2,688.84mm)
96.39"
(2,448.31mm)
9.47"
(240.53mm)
99th Driest Driest since: 1998 1957
27th Wettest Wettest since: 1995 2010
Sep 1995–Aug 1999
48-Month
137.44"
(3,490.98mm)
128.37"
(3,260.60mm)
9.07"
(230.38mm)
95th Driest Driest since: 1998 1936
30th Wettest Wettest since: 1996 2010
Sep 1994–Aug 1999
60-Month
171.55"
(4,357.37mm)
160.37"
(4,073.40mm)
11.18"
(283.97mm)
94th Driest Driest since: 1998 1957
30th Wettest Wettest since: 1997 2011

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, Precipitation, published September 2022, retrieved on September 26, 2022 from https://www.ncdc.noaa.gov/cag/