Statewide Rankings

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Please note, Degree Days and Palmer Indices are not available for Alaska. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Pennsylvania

Precipitation Rankings, April 1939

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Record Driest
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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2023)	Wettest/Driest Since	Record
April 1939 1-Month	3.51" (89.15mm)	3.64" (92.46mm)	-0.13" (-3.31mm)	64th Driest	Driest since: 1938	1946
April 1939 1-Month	3.51" (89.15mm)	3.64" (92.46mm)	-0.13" (-3.31mm)	66th Wettest	Wettest since: 1937	2011
Mar–Apr 1939 2-Month	7.22" (183.39mm)	7.14" (181.36mm)	0.08" (2.03mm)	72nd Driest	Driest since: 1938	1915
Mar–Apr 1939 2-Month	7.22" (183.39mm)	7.14" (181.36mm)	0.08" (2.03mm)	58th Wettest	Wettest since: 1937	2011
Feb–Apr 1939 3-Month	11.62" (295.15mm)	9.73" (247.14mm)	1.89" (48.01mm)	105th Driest	Driest since: 1938	1941
Feb–Apr 1939 3-Month	11.62" (295.15mm)	9.73" (247.14mm)	1.89" (48.01mm)	25th Wettest	Wettest since: 1936	2011
Jan–Apr 1939 4-Month	14.79" (375.67mm)	12.78" (324.61mm)	2.01" (51.06mm)	103rd Driest	Driest since: 1938	1941
Jan–Apr 1939 4-Month	14.79" (375.67mm)	12.78" (324.61mm)	2.01" (51.06mm)	27th Wettest	Wettest since: 1937	2011
Dec 1938–Apr 1939 5-Month	17.37" (441.20mm)	15.88" (403.35mm)	1.49" (37.85mm)	91st Driest	Driest since: 1938	1941
Dec 1938–Apr 1939 5-Month	17.37" (441.20mm)	15.88" (403.35mm)	1.49" (37.85mm)	38th Wettest	Wettest since: 1937	2011
Nov 1938–Apr 1939 6-Month	20.55" (521.97mm)	19.09" (484.89mm)	1.46" (37.08mm)	92nd Driest	Driest since: 1938	1931
Nov 1938–Apr 1939 6-Month	20.55" (521.97mm)	19.09" (484.89mm)	1.46" (37.08mm)	37th Wettest	Wettest since: 1937	1952
Oct 1938–Apr 1939 7-Month	22.29" (566.17mm)	22.27" (565.66mm)	0.02" (0.51mm)	62nd Driest	Driest since: 1935	1925
Oct 1938–Apr 1939 7-Month	22.29" (566.17mm)	22.27" (565.66mm)	0.02" (0.51mm)	67th Wettest	Wettest since: 1938	2011
Sep 1938–Apr 1939 8-Month	27.15" (689.61mm)	25.83" (656.08mm)	1.32" (33.53mm)	81st Driest	Driest since: 1938	1931
Sep 1938–Apr 1939 8-Month	27.15" (689.61mm)	25.83" (656.08mm)	1.32" (33.53mm)	48th Wettest	Wettest since: 1937	2019
Aug 1938–Apr 1939 9-Month	29.95" (760.73mm)	29.69" (754.13mm)	0.26" (6.60mm)	65th Driest	Driest since: 1934	1931
Aug 1938–Apr 1939 9-Month	29.95" (760.73mm)	29.69" (754.13mm)	0.26" (6.60mm)	64th Wettest	Wettest since: 1938	2019
Jul 1938–Apr 1939 10-Month	34.59" (878.59mm)	33.89" (860.81mm)	0.70" (17.78mm)	70th Driest	Driest since: 1938	1931
Jul 1938–Apr 1939 10-Month	34.59" (878.59mm)	33.89" (860.81mm)	0.70" (17.78mm)	59th Wettest	Wettest since: 1937	2019
Jun 1938–Apr 1939 11-Month	39.55" (1,004.57mm)	38.05" (966.47mm)	1.50" (38.10mm)	78th Driest	Driest since: 1938	1931
Jun 1938–Apr 1939 11-Month	39.55" (1,004.57mm)	38.05" (966.47mm)	1.50" (38.10mm)	51st Wettest	Wettest since: 1937	2019
May 1938–Apr 1939 12-Month	43.38" (1,101.85mm)	41.95" (1,065.53mm)	1.43" (36.32mm)	72nd Driest	Driest since: 1938	1931
May 1938–Apr 1939 12-Month	43.38" (1,101.85mm)	41.95" (1,065.53mm)	1.43" (36.32mm)	57th Wettest	Wettest since: 1936	2019
Nov 1937–Apr 1939 18-Month	60.05" (1,525.27mm)	61.03" (1,550.16mm)	-0.98" (-24.89mm)	53rd Driest	Driest since: 1935	1931
Nov 1937–Apr 1939 18-Month	60.05" (1,525.27mm)	61.03" (1,550.16mm)	-0.98" (-24.89mm)	75th Wettest	Wettest since: 1938	2019
May 1937–Apr 1939 24-Month	86.08" (2,186.43mm)	83.91" (2,131.31mm)	2.17" (55.12mm)	73rd Driest	Driest since: 1938	1966
May 1937–Apr 1939 24-Month	86.08" (2,186.43mm)	83.91" (2,131.31mm)	2.17" (55.12mm)	55th Wettest	Wettest since: 1937	2020
May 1936–Apr 1939 36-Month	129.24" (3,282.70mm)	125.93" (3,198.62mm)	3.31" (84.08mm)	73rd Driest	Driest since: 1937	1967
May 1936–Apr 1939 36-Month	129.24" (3,282.70mm)	125.93" (3,198.62mm)	3.31" (84.08mm)	54th Wettest	Wettest since: 1938	2020
May 1935–Apr 1939 48-Month	175.17" (4,449.32mm)	167.93" (4,265.42mm)	7.24" (183.90mm)	87th Driest	Driest since: 1938	1966
May 1935–Apr 1939 48-Month	175.17" (4,449.32mm)	167.93" (4,265.42mm)	7.24" (183.90mm)	39th Wettest	Wettest since: 1930	2020
May 1934–Apr 1939 60-Month	215.03" (5,461.76mm)	209.83" (5,329.68mm)	5.20" (132.08mm)	75th Driest	Driest since: 1938	1967
May 1934–Apr 1939 60-Month	215.03" (5,461.76mm)	209.83" (5,329.68mm)	5.20" (132.08mm)	50th Wettest	Wettest since: 1930	2022

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published June 2023, retrieved on June 8, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings