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 May 2020. For more information, please see Climatological Rankings.


Pennsylvania

Precipitation Rankings, May 2020

View Period (Months):All1234567891011121824364860
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  • Record Driest
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  • Top 1/10
  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Wettest/Driest
Since
Record
May 2020
1-Month
3.39"
(86.11mm)
3.93"
(99.82mm)
-0.54"
(-13.71mm)
50th Driest Driest since: 2015 1964
77th Wettest Wettest since: 2019 1989
Ties: 1916
Apr–May 2020
2-Month
7.88"
(200.15mm)
7.57"
(192.28mm)
0.31"
(7.87mm)
74th Driest Driest since: 2016 1926
53rd Wettest Wettest since: 2019 2011
Mar–May 2020
3-Month
12.13"
(308.10mm)
11.06"
(280.92mm)
1.07"
(27.18mm)
85th Driest Driest since: 2016 1926
42nd Wettest Wettest since: 2019 2011
Feb–May 2020
4-Month
15.48"
(393.19mm)
13.66"
(346.96mm)
1.82"
(46.23mm)
100th Driest Driest since: 2016 1941
27th Wettest Wettest since: 2019 2011
Jan–May 2020
5-Month
18.51"
(470.15mm)
16.71"
(424.43mm)
1.80"
(45.72mm)
96th Driest Driest since: 2016 1941
31st Wettest Wettest since: 2019 2011
Dec 2019–May 2020
6-Month
22.23"
(564.64mm)
19.81"
(503.17mm)
2.42"
(61.47mm)
98th Driest Driest since: 2016 1941
28th Wettest Wettest since: 2019 2011
Nov 2019–May 2020
7-Month
24.69"
(627.13mm)
23.02"
(584.71mm)
1.67"
(42.42mm)
86th Driest Driest since: 2016 1934
40th Wettest Wettest since: 2019 1952
Oct 2019–May 2020
8-Month
30.30"
(769.62mm)
26.19"
(665.23mm)
4.11"
(104.39mm)
105th Driest Driest since: 2017 1925
21st Wettest Wettest since: 2019 2011
Sep 2019–May 2020
9-Month
32.43"
(823.72mm)
29.75"
(755.65mm)
2.68"
(68.07mm)
86th Driest Driest since: 2016 1941
40th Wettest Wettest since: 2019 2019
Ties: 1991
Aug 2019–May 2020
10-Month
36.14"
(917.96mm)
33.62"
(853.95mm)
2.52"
(64.01mm)
88th Driest Driest since: 2016 1931
38th Wettest Wettest since: 2019 2019
Jul 2019–May 2020
11-Month
41.72"
(1,059.69mm)
37.82"
(960.63mm)
3.90"
(99.06mm)
97th Driest Driest since: 2017 1931
29th Wettest Wettest since: 2019 2019
Jun 2019–May 2020
12-Month
47.54"
(1,207.52mm)
41.97"
(1,066.04mm)
5.57"
(141.48mm)
107th Driest Driest since: 2017 1931
19th Wettest Wettest since: 2019 2019
Dec 2018–May 2020
18-Month
73.55"
(1,868.17mm)
61.76"
(1,568.70mm)
11.79"
(299.47mm)
119th Driest Driest since: 2018 1931
6th Wettest Wettest since: 2019 2019
Jun 2018–May 2020
24-Month
111.88"
(2,841.75mm)
83.91"
(2,131.31mm)
27.97"
(710.44mm)
123rd Driest Driest since: 2018 1931
2nd Wettest Wettest since: 2019 2019
Jun 2017–May 2020
36-Month
159.67"
(4,055.62mm)
125.93"
(3,198.62mm)
33.74"
(857.00mm)
123rd Driest Driest since: 2019 1965
1st Wettest Wettest to Date 2020
Jun 2016–May 2020
48-Month
204.14"
(5,185.16mm)
167.92"
(4,265.17mm)
36.22"
(919.99mm)
122nd Driest Driest since: 2019 1966
1st Wettest Wettest to Date 2020
Jun 2015–May 2020
60-Month
248.46"
(6,310.88mm)
209.84"
(5,329.94mm)
38.62"
(980.94mm)
121st Driest Driest since: 2019 1967
1st Wettest Wettest to Date 2020

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published June 2020, retrieved on July 2, 2020 from https://www.ncdc.noaa.gov/cag/