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 June 2021. For more information, please see Climatological Rankings.


Pennsylvania

Precipitation Rankings, May 2020

View Period (Months):All1234567891011121824364860
Download: xml csv json
  • Record Driest
  • Bottom 1/10
  • Bottom 1/3
  • Normal
  • Top 1/3
  • Top 1/10
  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Wettest/Driest
Since
Record
May 2020
1-Month
3.47"
(88.14mm)
3.93"
(99.82mm)
-0.46"
(-11.68mm)
52nd Driest Driest since: 2015 1964
76th Wettest Wettest since: 2019 1989
Ties: 1937, 1954, 1970
Apr–May 2020
2-Month
7.98"
(202.69mm)
7.57"
(192.28mm)
0.41"
(10.41mm)
78th Driest Driest since: 2016 1926
50th Wettest Wettest since: 2019 2011
Mar–May 2020
3-Month
12.25"
(311.15mm)
11.06"
(280.92mm)
1.19"
(30.23mm)
89th Driest Driest since: 2016 1926
39th Wettest Wettest since: 2019 2011
Feb–May 2020
4-Month
15.60"
(396.24mm)
13.66"
(346.96mm)
1.94"
(49.28mm)
102nd Driest Driest since: 2016 1941
26th Wettest Wettest since: 2019 2011
Jan–May 2020
5-Month
18.65"
(473.71mm)
16.71"
(424.43mm)
1.94"
(49.28mm)
97th Driest Driest since: 2016 1941
31st Wettest Wettest since: 2019 2011
Dec 2019–May 2020
6-Month
22.36"
(567.94mm)
19.81"
(503.17mm)
2.55"
(64.77mm)
100th Driest Driest since: 2016 1941
27th Wettest Wettest since: 2019 2011
Ties: 1909
Nov 2019–May 2020
7-Month
24.80"
(629.92mm)
23.02"
(584.71mm)
1.78"
(45.21mm)
89th Driest Driest since: 2016 1934
38th Wettest Wettest since: 2019 1952
Oct 2019–May 2020
8-Month
30.41"
(772.41mm)
26.19"
(665.23mm)
4.22"
(107.18mm)
107th Driest Driest since: 2017 1925
20th Wettest Wettest since: 2019 2011
Sep 2019–May 2020
9-Month
32.54"
(826.52mm)
29.75"
(755.65mm)
2.79"
(70.87mm)
89th Driest Driest since: 2016 1941
38th Wettest Wettest since: 2019 2019
Ties: 1945
Aug 2019–May 2020
10-Month
36.25"
(920.75mm)
33.62"
(853.95mm)
2.63"
(66.80mm)
89th Driest Driest since: 2016 1931
38th Wettest Wettest since: 2019 2019
Jul 2019–May 2020
11-Month
41.87"
(1,063.50mm)
37.82"
(960.63mm)
4.05"
(102.87mm)
99th Driest Driest since: 2017 1931
28th Wettest Wettest since: 2019 2019
Jun 2019–May 2020
12-Month
47.69"
(1,211.33mm)
41.97"
(1,066.04mm)
5.72"
(145.29mm)
109th Driest Driest since: 2017 1931
18th Wettest Wettest since: 2019 2019
Dec 2018–May 2020
18-Month
73.69"
(1,871.73mm)
61.76"
(1,568.70mm)
11.93"
(303.03mm)
120th Driest Driest since: 2018 1931
6th Wettest Wettest since: 2019 2019
Jun 2018–May 2020
24-Month
112.02"
(2,845.31mm)
83.91"
(2,131.31mm)
28.11"
(714.00mm)
124th Driest Driest since: 2018 1931
2nd Wettest Wettest since: 2019 2019
Jun 2017–May 2020
36-Month
159.81"
(4,059.17mm)
125.93"
(3,198.62mm)
33.88"
(860.55mm)
124th Driest Driest since: 2019 1965
1st Wettest Wettest to Date 2020
Jun 2016–May 2020
48-Month
204.28"
(5,188.71mm)
167.92"
(4,265.17mm)
36.36"
(923.54mm)
123rd Driest Driest since: 2019 1966
1st Wettest Wettest to Date 2020
Jun 2015–May 2020
60-Month
248.60"
(6,314.44mm)
209.84"
(5,329.94mm)
38.76"
(984.50mm)
122nd 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 July 2021, retrieved on July 27, 2021 from https://www.ncdc.noaa.gov/cag/