Climate at a Glance

Regional 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.


Northern Rockies and Plains Climate Region

Precipitation Rankings, May 2012

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 2012
1-Month
2.17"
(55.12mm)
2.62"
(66.55mm)
-0.45"
(-11.43mm)
37th Driest Driest since: 2009 1934
89th Wettest Wettest since: 2011 2011
Apr–May 2012
2-Month
4.37"
(111.00mm)
4.36"
(110.74mm)
0.01"
(0.26mm)
68th Driest Driest since: 2009 1934
58th Wettest Wettest since: 2011 2011
Ties: 1902, 1929
Mar–May 2012
3-Month
5.22"
(132.59mm)
5.52"
(140.21mm)
-0.30"
(-7.62mm)
52nd Driest Driest since: 2009 1934
74th Wettest Wettest since: 2011 2011
Feb–May 2012
4-Month
6.27"
(159.26mm)
6.31"
(160.27mm)
-0.04"
(-1.01mm)
60th Driest Driest since: 2009 1934
66th Wettest Wettest since: 2011 2011
Ties: 1945, 1955
Jan–May 2012
5-Month
6.99"
(177.55mm)
7.19"
(182.63mm)
-0.20"
(-5.08mm)
54th Driest Driest since: 2009 1934
72nd Wettest Wettest since: 2011 2011
Dec 2011–May 2012
6-Month
7.61"
(193.29mm)
8.06"
(204.72mm)
-0.45"
(-11.43mm)
42nd Driest Driest since: 2006 1931
83rd Wettest Wettest since: 2011 2011
Ties: 1914
Nov 2011–May 2012
7-Month
8.38"
(212.85mm)
9.01"
(228.85mm)
-0.63"
(-16.00mm)
37th Driest Driest since: 2002 1934
88th Wettest Wettest since: 2011 2011
Oct 2011–May 2012
8-Month
10.03"
(254.76mm)
10.26"
(260.60mm)
-0.23"
(-5.84mm)
50th Driest Driest since: 2006 1934
75th Wettest Wettest since: 2011 2011
Sep 2011–May 2012
9-Month
10.76"
(273.30mm)
11.84"
(300.74mm)
-1.08"
(-27.44mm)
26th Driest Driest since: 2002 1934
99th Wettest Wettest since: 2011 2011
Aug 2011–May 2012
10-Month
12.50"
(317.50mm)
13.60"
(345.44mm)
-1.10"
(-27.94mm)
29th Driest Driest since: 2004 1934
96th Wettest Wettest since: 2011 2011
Ties: 1900
Jul 2011–May 2012
11-Month
14.84"
(376.94mm)
15.67"
(398.02mm)
-0.83"
(-21.08mm)
41st Driest Driest since: 2006 1934
84th Wettest Wettest since: 2011 2011
Jun 2011–May 2012
12-Month
18.20"
(462.28mm)
18.62"
(472.95mm)
-0.42"
(-10.67mm)
47th Driest Driest since: 2004 1934
78th Wettest Wettest since: 2011 2011
Ties: 1979
Dec 2010–May 2012
18-Month
30.38"
(771.65mm)
26.68"
(677.67mm)
3.70"
(93.98mm)
114th Driest Driest since: 2010 1937
10th Wettest Wettest since: 2011 2011
Jun 2010–May 2012
24-Month
43.37"
(1,101.60mm)
37.24"
(945.90mm)
6.13"
(155.70mm)
120th Driest Driest since: 2010 1937
4th Wettest Wettest since: 2011 2011
Jun 2009–May 2012
36-Month
64.58"
(1,640.33mm)
55.80"
(1,417.32mm)
8.78"
(223.01mm)
120th Driest Driest since: 2010 1936
3rd Wettest Wettest since: 2011 2011
Jun 2008–May 2012
48-Month
84.63"
(2,149.60mm)
74.37"
(1,889.00mm)
10.26"
(260.60mm)
119th Driest Driest since: 2010 1937
3rd Wettest Wettest since: 2011 1996
Jun 2007–May 2012
60-Month
103.17"
(2,620.52mm)
92.93"
(2,360.42mm)
10.24"
(260.10mm)
115th Driest Driest since: 2010 1937
6th Wettest Wettest since: 2011 1999

Citing This Page

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