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.


Pennsylvania

Precipitation Rankings, May 1901

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 1901
1-Month
5.72"
(145.29mm)
3.93"
(99.82mm)
1.79"
(45.47mm)
107th Driest Driest since: 1900 1964
19th Wettest Wettest to Date 1989
Apr–May 1901
2-Month
11.30"
(287.02mm)
7.57"
(192.28mm)
3.73"
(94.74mm)
122nd Driest Driest since: 1900 1926
4th Wettest Wettest to Date 2011
Mar–May 1901
3-Month
15.40"
(391.16mm)
11.06"
(280.92mm)
4.34"
(110.24mm)
120th Driest Driest since: 1900 1926
6th Wettest Wettest to Date 2011
Feb–May 1901
4-Month
16.39"
(416.31mm)
13.66"
(346.96mm)
2.73"
(69.35mm)
108th Driest Driest since: 1900 1941
18th Wettest Wettest to Date 2011
Jan–May 1901
5-Month
18.70"
(474.98mm)
16.71"
(424.43mm)
1.99"
(50.55mm)
97th Driest Driest since: 1900 1941
29th Wettest Wettest since: 1898 2011
Ties: 2004
Dec 1900–May 1901
6-Month
20.90"
(530.86mm)
19.81"
(503.17mm)
1.09"
(27.69mm)
82nd Driest Driest since: 1900 1941
43rd Wettest Wettest since: 1898 2011
Nov 1900–May 1901
7-Month
25.45"
(646.43mm)
23.02"
(584.71mm)
2.43"
(61.72mm)
97th Driest Driest since: 1900 1934
28th Wettest Wettest since: 1898 1952
Oct 1900–May 1901
8-Month
28.48"
(723.39mm)
26.19"
(665.23mm)
2.29"
(58.16mm)
92nd Driest Driest since: 1900 1925
33rd Wettest Wettest since: 1899 2011
Sep 1900–May 1901
9-Month
30.04"
(763.02mm)
29.75"
(755.65mm)
0.29"
(7.37mm)
71st Driest Driest since: 1900 1941
54th Wettest Wettest since: 1899 2019
Aug 1900–May 1901
10-Month
33.45"
(849.63mm)
33.62"
(853.95mm)
-0.17"
(-4.32mm)
61st Driest Driest since: 1900 1931
64th Wettest Wettest since: 1899 2019
Jul 1900–May 1901
11-Month
38.19"
(970.03mm)
37.82"
(960.63mm)
0.37"
(9.40mm)
61st Driest Driest since: 1900 1931
64th Wettest Wettest since: 1899 2019
Jun 1900–May 1901
12-Month
41.82"
(1,062.23mm)
41.97"
(1,066.04mm)
-0.15"
(-3.81mm)
55th Driest Driest since: 1900 1931
70th Wettest Wettest since: 1899 2019
Dec 1899–May 1901
18-Month
59.66"
(1,515.36mm)
61.76"
(1,568.70mm)
-2.10"
(-53.34mm)
38th Driest Driest since: 1900 1931
86th Wettest Wettest since: 1899 2019
Jun 1899–May 1901
24-Month
79.69"
(2,024.13mm)
83.91"
(2,131.31mm)
-4.22"
(-107.18mm)
29th Driest Driest since: 1897 1931
95th Wettest Wettest since: 1900 2019
Ties: 1981
Jun 1898–May 1901
36-Month
123.77"
(3,143.76mm)
125.93"
(3,198.62mm)
-2.16"
(-54.86mm)
41st Driest Driest since: 1898 1965
82nd Wettest Wettest since: 1900 2019
Jun 1897–May 1901
48-Month
167.28"
(4,248.91mm)
167.92"
(4,265.17mm)
-0.64"
(-16.26mm)
48th Driest Driest since: 1899 1966
74th Wettest Wettest since: 1900 2019
Jun 1896–May 1901
60-Month
209.70"
(5,326.38mm)
209.84"
(5,329.94mm)
-0.14"
(-3.56mm)
50th Driest Driest since: 1900 1967
71st Wettest Wettest to Date 2008

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published November 2019, retrieved on November 19, 2019 from https://www.ncdc.noaa.gov/cag/