Regional Rankings

Regional Data Info
Please note, Palmer Indices are not available for NWS Regions. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Upper Midwest Climate Region

Precipitation Rankings, May 2012

View Period (Months):
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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
May 2012
1-Month
4.49"
(114.05mm)
3.41"
(86.61mm)
1.08"
(27.44mm)
103rd Driest
Driest since:
1934
26th Wettest
Wettest since:
2004
Apr–May 2012
2-Month
7.29"
(185.17mm)
5.91"
(150.11mm)
1.38"
(35.06mm)
102nd Driest
Driest since:
1934
27th Wettest
Wettest since:
2013
Mar–May 2012
3-Month
9.28"
(235.71mm)
7.63"
(193.80mm)
1.65"
(41.91mm)
111th Driest
Driest since:
1934
18th Wettest
Wettest since:
2013
Feb–May 2012
4-Month
10.62"
(269.75mm)
8.65"
(219.71mm)
1.97"
(50.04mm)
112th Driest
Driest since:
1934
17th Wettest
Wettest since:
2013
Jan–May 2012
5-Month
11.66"
(296.16mm)
9.79"
(248.67mm)
1.87"
(47.49mm)
109th Driest
Driest since:
1934
20th Wettest
Wettest since:
2013
Dec 2011–May 2012
6-Month
13.02"
(330.71mm)
11.04"
(280.42mm)
1.98"
(50.29mm)
106th Driest
Driest since:
1934
22nd Wettest
Wettest since:
2013
Ties: 1945, 1985, 1993
Nov 2011–May 2012
7-Month
14.75"
(374.65mm)
12.87"
(326.90mm)
1.88"
(47.75mm)
99th Driest
Driest since:
1934
29th Wettest
Wettest since:
2013
Oct 2011–May 2012
8-Month
16.34"
(415.04mm)
15.17"
(385.32mm)
1.17"
(29.72mm)
77th Driest
Driest since:
1925
51st Wettest
Wettest since:
2019
Sep 2011–May 2012
9-Month
18.64"
(473.46mm)
18.56"
(471.42mm)
0.08"
(2.04mm)
59th Driest
Driest since:
1925
69th Wettest
Wettest since:
2019
Aug 2011–May 2012
10-Month
21.60"
(548.64mm)
22.11"
(561.59mm)
-0.51"
(-12.95mm)
46th Driest
Driest since:
1931
82nd Wettest
Wettest since:
2019
Jul 2011–May 2012
11-Month
25.59"
(649.99mm)
25.70"
(652.78mm)
-0.11"
(-2.79mm)
55th Driest
Driest since:
1931
73rd Wettest
Wettest since:
2019
Ties: 1976
Jun 2011–May 2012
12-Month
30.11"
(764.79mm)
29.72"
(754.89mm)
0.39"
(9.90mm)
65th Driest
Driest since:
1934
63rd Wettest
Wettest since:
2019
Dec 2010–May 2012
18-Month
43.54"
(1,105.92mm)
40.74"
(1,034.80mm)
2.80"
(71.12mm)
86th Driest
Driest since:
1911
41st Wettest
Wettest since:
2017
Jun 2010–May 2012
24-Month
70.01"
(1,778.25mm)
59.42"
(1,509.27mm)
10.59"
(268.98mm)
123rd Driest
Driest since:
1931
4th Wettest
Wettest to Date
2020
Jun 2009–May 2012
36-Month
99.98"
(2,539.49mm)
89.09"
(2,262.89mm)
10.89"
(276.60mm)
116th Driest
Driest since:
1935
10th Wettest
Wettest since:
2019
Jun 2008–May 2012
48-Month
132.83"
(3,373.88mm)
118.72"
(3,015.49mm)
14.11"
(358.39mm)
114th Driest
Driest since:
1934
11th Wettest
Wettest since:
2020
Jun 2007–May 2012
60-Month
166.77"
(4,235.96mm)
148.35"
(3,768.09mm)
18.42"
(467.87mm)
116th Driest
Driest since:
1934
8th Wettest
Wettest since:
2020

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