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 1977

View Period (Months):All1234567891011121824364860
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2019)
Wettest/Driest
Since
Record
May 1977
1-Month
1.69"
(42.93mm)
3.93"
(99.82mm)
-2.24"
(-56.89mm)
4th Driest Driest since: 1964 1964
122nd Wettest Wettest since: 1976 1989
Apr–May 1977
2-Month
5.84"
(148.34mm)
7.57"
(192.28mm)
-1.73"
(-43.94mm)
27th Driest Driest since: 1976 1926
99th Wettest Wettest since: 1975 2011
Mar–May 1977
3-Month
11.13"
(282.70mm)
11.06"
(280.92mm)
0.07"
(1.78mm)
71st Driest Driest since: 1976 1926
55th Wettest Wettest since: 1974 2011
Feb–May 1977
4-Month
12.77"
(324.36mm)
13.66"
(346.96mm)
-0.89"
(-22.60mm)
52nd Driest Driest since: 1976 1941
74th Wettest Wettest since: 1975 2011
Jan–May 1977
5-Month
14.27"
(362.46mm)
16.71"
(424.43mm)
-2.44"
(-61.97mm)
20th Driest Driest since: 1969 1941
106th Wettest Wettest since: 1976 2011
Dec 1976–May 1977
6-Month
16.28"
(413.51mm)
19.81"
(503.17mm)
-3.53"
(-89.66mm)
8th Driest Driest since: 1969 1941
117th Wettest Wettest since: 1976 2011
Ties: 2001
Nov 1976–May 1977
7-Month
17.23"
(437.64mm)
23.02"
(584.71mm)
-5.79"
(-147.07mm)
3rd Driest Driest since: 1941 1934
122nd Wettest Wettest since: 1976 1952
Oct 1976–May 1977
8-Month
24.14"
(613.16mm)
26.19"
(665.23mm)
-2.05"
(-52.07mm)
33rd Driest Driest since: 1969 1925
92nd Wettest Wettest since: 1976 2011
Sep 1976–May 1977
9-Month
28.24"
(717.30mm)
29.75"
(755.65mm)
-1.51"
(-38.35mm)
39th Driest Driest since: 1970 1941
86th Wettest Wettest since: 1976 2019
Aug 1976–May 1977
10-Month
31.68"
(804.67mm)
33.62"
(853.95mm)
-1.94"
(-49.28mm)
39th Driest Driest since: 1970 1931
86th Wettest Wettest since: 1976 2019
Jul 1976–May 1977
11-Month
36.06"
(915.92mm)
37.82"
(960.63mm)
-1.76"
(-44.71mm)
38th Driest Driest since: 1969 1931
87th Wettest Wettest since: 1976 2019
Jun 1976–May 1977
12-Month
40.81"
(1,036.57mm)
41.97"
(1,066.04mm)
-1.16"
(-29.47mm)
46th Driest Driest since: 1969 1931
79th Wettest Wettest since: 1976 2019
Dec 1975–May 1977
18-Month
59.15"
(1,502.41mm)
61.76"
(1,568.70mm)
-2.61"
(-66.29mm)
32nd Driest Driest since: 1970 1931
92nd Wettest Wettest since: 1976 2019
Jun 1975–May 1977
24-Month
88.10"
(2,237.74mm)
83.91"
(2,131.31mm)
4.19"
(106.43mm)
85th Driest Driest since: 1971 1931
39th Wettest Wettest since: 1976 2019
Jun 1974–May 1977
36-Month
132.33"
(3,361.18mm)
125.93"
(3,198.62mm)
6.40"
(162.56mm)
90th Driest Driest since: 1972 1965
33rd Wettest Wettest since: 1976 2019
Jun 1973–May 1977
48-Month
177.06"
(4,497.32mm)
167.92"
(4,265.17mm)
9.14"
(232.15mm)
94th Driest Driest since: 1972 1966
28th Wettest Wettest since: 1976 2019
Jun 1972–May 1977
60-Month
229.23"
(5,822.44mm)
209.84"
(5,329.94mm)
19.39"
(492.50mm)
108th Driest Driest since: 1974 1967
13th Wettest Wettest since: 1976 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/