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 2021. For more information, please see Climatological Rankings.


Pennsylvania

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
(1895-2021)
Wettest/Driest
Since
Record
May 2012
1-Month
5.10"
(129.54mm)
3.93"
(99.82mm)
1.17"
(29.72mm)
98th Driest Driest since: 2010 1964
30th Wettest Wettest since: 2011 1989
Apr–May 2012
2-Month
7.25"
(184.15mm)
7.57"
(192.28mm)
-0.32"
(-8.13mm)
58th Driest Driest since: 2010 1926
70th Wettest Wettest since: 2011 2011
Mar–May 2012
3-Month
10.14"
(257.56mm)
11.06"
(280.92mm)
-0.92"
(-23.36mm)
50th Driest Driest since: 2010 1926
78th Wettest Wettest since: 2011 2011
Feb–May 2012
4-Month
11.64"
(295.66mm)
13.66"
(346.96mm)
-2.02"
(-51.30mm)
24th Driest Driest since: 2006 1941
104th Wettest Wettest since: 2011 2011
Jan–May 2012
5-Month
15.00"
(381.00mm)
16.71"
(424.43mm)
-1.71"
(-43.43mm)
39th Driest Driest since: 2009 1941
89th Wettest Wettest since: 2011 2011
Dec 2011–May 2012
6-Month
18.78"
(477.01mm)
19.81"
(503.17mm)
-1.03"
(-26.16mm)
48th Driest Driest since: 2007 1941
79th Wettest Wettest since: 2011 2011
Nov 2011–May 2012
7-Month
22.72"
(577.09mm)
23.02"
(584.71mm)
-0.30"
(-7.62mm)
64th Driest Driest since: 2010 1934
63rd Wettest Wettest since: 2011 1952
Oct 2011–May 2012
8-Month
27.68"
(703.07mm)
26.19"
(665.23mm)
1.49"
(37.84mm)
81st Driest Driest since: 2010 1925
46th Wettest Wettest since: 2011 2011
Sep 2011–May 2012
9-Month
37.78"
(959.61mm)
29.75"
(755.65mm)
8.03"
(203.96mm)
122nd Driest Driest since: 2010 1941
5th Wettest Wettest since: 2011 2019
Aug 2011–May 2012
10-Month
44.66"
(1,134.36mm)
33.62"
(853.95mm)
11.04"
(280.41mm)
125th Driest Driest since: 2011 1931
2nd Wettest Wettest to Date 2019
Jul 2011–May 2012
11-Month
47.64"
(1,210.06mm)
37.82"
(960.63mm)
9.82"
(249.43mm)
122nd Driest Driest since: 2010 1931
5th Wettest Wettest since: 2011 2019
Jun 2011–May 2012
12-Month
50.82"
(1,290.83mm)
41.97"
(1,066.04mm)
8.85"
(224.79mm)
120th Driest Driest since: 2010 1931
7th Wettest Wettest since: 2011 2019
Dec 2010–May 2012
18-Month
79.44"
(2,017.78mm)
61.76"
(1,568.70mm)
17.68"
(449.08mm)
124th Driest Driest since: 2011 1931
2nd Wettest Wettest to Date 2019
Jun 2010–May 2012
24-Month
102.67"
(2,607.82mm)
83.91"
(2,131.31mm)
18.76"
(476.51mm)
122nd Driest Driest since: 2011 1931
4th Wettest Wettest since: 2005 2019
Jun 2009–May 2012
36-Month
146.72"
(3,726.69mm)
125.93"
(3,198.62mm)
20.79"
(528.07mm)
119th Driest Driest since: 2011 1965
6th Wettest Wettest since: 2006 2020
Jun 2008–May 2012
48-Month
186.97"
(4,749.04mm)
167.92"
(4,265.17mm)
19.05"
(483.87mm)
113th Driest Driest since: 2011 1966
11th Wettest Wettest since: 2008 2020
Jun 2007–May 2012
60-Month
234.71"
(5,961.63mm)
209.84"
(5,329.94mm)
24.87"
(631.69mm)
117th Driest Driest since: 2011 1967
6th Wettest Wettest since: 2008 2020

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published September 2021, retrieved on September 20, 2021 from https://www.ncdc.noaa.gov/cag/