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, April 1978

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
April 1978
1-Month
2.26"
(57.40mm)
3.64"
(92.46mm)
-1.38"
(-35.06mm)
18th Driest Driest since: 1971 1946
108th Wettest Wettest since: 1977 2011
Mar–Apr 1978
2-Month
4.89"
(124.21mm)
7.13"
(181.10mm)
-2.24"
(-56.89mm)
11th Driest Driest since: 1971 1915
115th Wettest Wettest since: 1977 2011
Feb–Apr 1978
3-Month
5.91"
(150.11mm)
9.73"
(247.14mm)
-3.82"
(-97.03mm)
2nd Driest Driest since: 1941 1941
124th Wettest Wettest since: 1977 2011
Jan–Apr 1978
4-Month
12.42"
(315.47mm)
12.78"
(324.61mm)
-0.36"
(-9.14mm)
63rd Driest Driest since: 1976 1941
63rd Wettest Wettest since: 1977 2011
Dec 1977–Apr 1978
5-Month
17.01"
(432.05mm)
15.88"
(403.35mm)
1.13"
(28.70mm)
84th Driest Driest since: 1977 1941
41st Wettest Wettest since: 1975 2011
Ties: 1912
Nov 1977–Apr 1978
6-Month
21.46"
(545.08mm)
19.09"
(484.89mm)
2.37"
(60.19mm)
98th Driest Driest since: 1977 1931
27th Wettest Wettest since: 1973 1952
Oct 1977–Apr 1978
7-Month
25.58"
(649.73mm)
22.26"
(565.40mm)
3.32"
(84.33mm)
103rd Driest Driest since: 1977 1925
22nd Wettest Wettest since: 1973 2011
Sep 1977–Apr 1978
8-Month
30.86"
(783.84mm)
25.83"
(656.08mm)
5.03"
(127.76mm)
109th Driest Driest since: 1977 1931
16th Wettest Wettest since: 1952 2019
Aug 1977–Apr 1978
9-Month
35.18"
(893.57mm)
29.69"
(754.13mm)
5.49"
(139.44mm)
109th Driest Driest since: 1977 1931
16th Wettest Wettest since: 1956 2019
Jul 1977–Apr 1978
10-Month
40.75"
(1,035.05mm)
33.89"
(860.81mm)
6.86"
(174.24mm)
117th Driest Driest since: 1977 1931
8th Wettest Wettest since: 1951 2019
Jun 1977–Apr 1978
11-Month
44.84"
(1,138.94mm)
38.05"
(966.47mm)
6.79"
(172.47mm)
115th Driest Driest since: 1977 1931
10th Wettest Wettest since: 1973 2019
May 1977–Apr 1978
12-Month
46.53"
(1,181.86mm)
41.95"
(1,065.53mm)
4.58"
(116.33mm)
104th Driest Driest since: 1977 1931
21st Wettest Wettest since: 1976 2019
Nov 1976–Apr 1978
18-Month
62.07"
(1,576.58mm)
61.03"
(1,550.16mm)
1.04"
(26.42mm)
70th Driest Driest since: 1977 1931
54th Wettest Wettest since: 1976 2019
May 1976–Apr 1978
24-Month
89.13"
(2,263.90mm)
83.91"
(2,131.31mm)
5.22"
(132.59mm)
94th Driest Driest since: 1972 1966
30th Wettest Wettest since: 1977 2019
May 1975–Apr 1978
36-Month
137.26"
(3,486.40mm)
125.93"
(3,198.62mm)
11.33"
(287.78mm)
107th Driest Driest since: 1977 1967
16th Wettest Wettest since: 1976 2005
May 1974–Apr 1978
48-Month
181.43"
(4,608.32mm)
167.93"
(4,265.42mm)
13.50"
(342.90mm)
108th Driest Driest since: 1977 1966
14th Wettest Wettest since: 1976 2007
May 1973–Apr 1978
60-Month
226.71"
(5,758.43mm)
209.83"
(5,329.68mm)
16.88"
(428.75mm)
102nd Driest Driest since: 1974 1967
19th Wettest Wettest since: 1977 2008

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published November 2019, retrieved on November 22, 2019 from https://www.ncdc.noaa.gov/cag/