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 2019. For more information, please see Climatological Rankings.


Iowa

Precipitation Rankings, May 1999

View Period (Months):All1234567891011121824364860
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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2019)
Wettest/Driest
Since
Record
May 1999
1-Month
4.89"
(124.21mm)
4.05"
(102.87mm)
0.84"
(21.34mm)
90th Driest Driest since: 1998 1934
36th Wettest Wettest since: 1996 2013
Ties: 1950
Apr–May 1999
2-Month
11.15"
(283.21mm)
6.99"
(177.55mm)
4.16"
(105.66mm)
120th Driest Driest since: 1998 1934
6th Wettest Wettest since: 1903 2013
Mar–May 1999
3-Month
12.13"
(308.10mm)
8.95"
(227.33mm)
3.18"
(80.77mm)
106th Driest Driest since: 1998 1934
20th Wettest Wettest since: 1995 2013
Feb–May 1999
4-Month
13.04"
(331.22mm)
9.96"
(252.98mm)
3.08"
(78.24mm)
104th Driest Driest since: 1997 1934
22nd Wettest Wettest since: 1998 2013
Jan–May 1999
5-Month
14.33"
(363.98mm)
10.94"
(277.88mm)
3.39"
(86.10mm)
109th Driest Driest since: 1997 1934
17th Wettest Wettest since: 1998 2013
Ties: 1993
Dec 1998–May 1999
6-Month
14.75"
(374.65mm)
12.04"
(305.82mm)
2.71"
(68.83mm)
95th Driest Driest since: 1997 1934
30th Wettest Wettest since: 1998 2013
Nov 1998–May 1999
7-Month
16.36"
(415.54mm)
13.78"
(350.01mm)
2.58"
(65.53mm)
96th Driest Driest since: 1997 1934
29th Wettest Wettest since: 1998 2013
Oct 1998–May 1999
8-Month
21.19"
(538.23mm)
16.10"
(408.94mm)
5.09"
(129.29mm)
113th Driest Driest since: 1998 1934
12th Wettest Wettest since: 1993 2019
Sep 1998–May 1999
9-Month
23.25"
(590.55mm)
19.79"
(502.67mm)
3.46"
(87.88mm)
101st Driest Driest since: 1998 1934
24th Wettest Wettest since: 1995 2019
Ties: 2001
Aug 1998–May 1999
10-Month
28.26"
(717.80mm)
23.65"
(600.71mm)
4.61"
(117.09mm)
102nd Driest Driest since: 1998 1934
23rd Wettest Wettest since: 1993 2019
Jul 1998–May 1999
11-Month
31.42"
(798.07mm)
27.54"
(699.52mm)
3.88"
(98.55mm)
98th Driest Driest since: 1998 1934
27th Wettest Wettest since: 1994 2019
Jun 1998–May 1999
12-Month
39.33"
(998.98mm)
32.14"
(816.36mm)
7.19"
(182.62mm)
111th Driest Driest since: 1998 1934
14th Wettest Wettest since: 1994 2019
Dec 1997–May 1999
18-Month
54.90"
(1,394.46mm)
44.20"
(1,122.68mm)
10.70"
(271.78mm)
111th Driest Driest since: 1998 1934
13th Wettest Wettest since: 1994 2019
Jun 1997–May 1999
24-Month
72.49"
(1,841.25mm)
64.29"
(1,632.97mm)
8.20"
(208.28mm)
103rd Driest Driest since: 1998 1957
21st Wettest Wettest since: 1995 2011
Jun 1996–May 1999
36-Month
104.31"
(2,649.47mm)
96.33"
(2,446.78mm)
7.98"
(202.69mm)
94th Driest Driest since: 1998 1958
29th Wettest Wettest since: 1996 2011
Jun 1995–May 1999
48-Month
134.54"
(3,417.32mm)
128.31"
(3,259.07mm)
6.23"
(158.25mm)
86th Driest Driest since: 1998 1957
36th Wettest Wettest since: 1997 2011
Jun 1994–May 1999
60-Month
171.68"
(4,360.67mm)
160.32"
(4,072.13mm)
11.36"
(288.54mm)
90th Driest Driest since: 1993 1958
31st Wettest Wettest since: 1998 2019

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published November 2019, retrieved on November 21, 2019 from https://www.ncdc.noaa.gov/cag/