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 September 2019. For more information, please see Climatological Rankings.


Iowa

Precipitation Rankings, May 2009

View Period (Months):All1234567891011121824364860
Download: xml csv json
  • Record Driest
  • Bottom 1/10
  • Bottom 1/3
  • Normal
  • Top 1/3
  • Top 1/10
  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2019)
Wettest/Driest
Since
Record
May 2009
1-Month
3.64"
(92.46mm)
4.05"
(102.87mm)
-0.41"
(-10.41mm)
52nd Driest Driest since: 2006 1934
74th Wettest Wettest since: 2008 2013
Apr–May 2009
2-Month
7.24"
(183.90mm)
6.99"
(177.55mm)
0.25"
(6.35mm)
64th Driest Driest since: 2006 1934
62nd Wettest Wettest since: 2008 2013
Ties: 1916
Mar–May 2009
3-Month
10.21"
(259.33mm)
8.95"
(227.33mm)
1.26"
(32.00mm)
86th Driest Driest since: 2006 1934
40th Wettest Wettest since: 2008 2013
Feb–May 2009
4-Month
11.00"
(279.40mm)
9.96"
(252.98mm)
1.04"
(26.42mm)
85th Driest Driest since: 2006 1934
41st Wettest Wettest since: 2008 2013
Ties: 2012
Jan–May 2009
5-Month
11.68"
(296.67mm)
10.94"
(277.88mm)
0.74"
(18.79mm)
77th Driest Driest since: 2006 1934
49th Wettest Wettest since: 2008 2013
Dec 2008–May 2009
6-Month
13.56"
(344.42mm)
12.04"
(305.82mm)
1.52"
(38.60mm)
82nd Driest Driest since: 2006 1934
43rd Wettest Wettest since: 2008 2013
Nov 2008–May 2009
7-Month
15.28"
(388.11mm)
13.78"
(350.01mm)
1.50"
(38.10mm)
79th Driest Driest since: 2006 1934
46th Wettest Wettest since: 2008 2013
Oct 2008–May 2009
8-Month
18.54"
(470.92mm)
16.10"
(408.94mm)
2.44"
(61.98mm)
89th Driest Driest since: 2006 1934
36th Wettest Wettest since: 2008 2019
Sep 2008–May 2009
9-Month
22.70"
(576.58mm)
19.79"
(502.67mm)
2.91"
(73.91mm)
94th Driest Driest since: 2006 1934
31st Wettest Wettest since: 2008 2019
Ties: 1991
Aug 2008–May 2009
10-Month
24.66"
(626.36mm)
23.65"
(600.71mm)
1.01"
(25.65mm)
69th Driest Driest since: 2006 1934
56th Wettest Wettest since: 2008 2019
Jul 2008–May 2009
11-Month
30.54"
(775.72mm)
27.54"
(699.52mm)
3.00"
(76.20mm)
88th Driest Driest since: 2006 1934
37th Wettest Wettest since: 2008 2019
Jun 2008–May 2009
12-Month
39.42"
(1,001.27mm)
32.14"
(816.36mm)
7.28"
(184.91mm)
113th Driest Driest since: 2007 1934
12th Wettest Wettest since: 2008 2019
Dec 2007–May 2009
18-Month
57.04"
(1,448.82mm)
44.20"
(1,122.68mm)
12.84"
(326.14mm)
118th Driest Driest since: 2007 1934
6th Wettest Wettest since: 2008 2019
Jun 2007–May 2009
24-Month
81.64"
(2,073.66mm)
64.29"
(1,632.97mm)
17.35"
(440.69mm)
119th Driest Driest since: 2008 1957
5th Wettest Wettest since: 1974 2011
Jun 2006–May 2009
36-Month
118.19"
(3,002.03mm)
96.33"
(2,446.78mm)
21.86"
(555.25mm)
117th Driest Driest since: 2008 1958
6th Wettest Wettest since: 1995 2011
Jun 2005–May 2009
48-Month
148.07"
(3,760.98mm)
128.31"
(3,259.07mm)
19.76"
(501.91mm)
110th Driest Driest since: 2008 1957
12th Wettest Wettest since: 1996 2011
Jun 2004–May 2009
60-Month
179.19"
(4,551.43mm)
160.32"
(4,072.13mm)
18.87"
(479.30mm)
107th Driest Driest since: 2008 1958
14th Wettest Wettest since: 1997 2019

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published October 2019, retrieved on October 24, 2019 from https://www.ncdc.noaa.gov/cag/