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 1971

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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 1971 1-Month	1.30" (33.02mm)	3.64" (92.46mm)	-2.34" (-59.44mm)	2nd Driest	Driest since: 1946	1946
April 1971 1-Month	1.30" (33.02mm)	3.64" (92.46mm)	-2.34" (-59.44mm)	128th Wettest	Wettest since: 1970	2011
Mar–Apr 1971 2-Month	3.91" (99.31mm)	7.14" (181.36mm)	-3.23" (-82.05mm)	2nd Driest	Driest since: 1915	1915
Mar–Apr 1971 2-Month	3.91" (99.31mm)	7.14" (181.36mm)	-3.23" (-82.05mm)	128th Wettest	Wettest since: 1970	2011
Feb–Apr 1971 3-Month	8.54" (216.92mm)	9.73" (247.14mm)	-1.19" (-30.22mm)	40th Driest	Driest since: 1969	1941
	8.54" (216.92mm)	9.73" (247.14mm)	-1.19" (-30.22mm)	90th Wettest	Wettest since: 1970	2011
	Ties: 2010
Jan–Apr 1971 4-Month	11.20" (284.48mm)	12.78" (324.61mm)	-1.58" (-40.13mm)	32nd Driest	Driest since: 1970	1941
Jan–Apr 1971 4-Month	11.20" (284.48mm)	12.78" (324.61mm)	-1.58" (-40.13mm)	98th Wettest	Wettest since: 1967	2011
Dec 1970–Apr 1971 5-Month	14.55" (369.57mm)	15.88" (403.35mm)	-1.33" (-33.78mm)	40th Driest	Driest since: 1969	1941
	14.55" (369.57mm)	15.88" (403.35mm)	-1.33" (-33.78mm)	89th Wettest	Wettest since: 1970	2011
	Ties: 1905
Nov 1970–Apr 1971 6-Month	19.29" (489.97mm)	19.09" (484.89mm)	0.20" (5.08mm)	71st Driest	Driest since: 1969	1931
Nov 1970–Apr 1971 6-Month	19.29" (489.97mm)	19.09" (484.89mm)	0.20" (5.08mm)	58th Wettest	Wettest since: 1970	1952
Oct 1970–Apr 1971 7-Month	23.80" (604.52mm)	22.27" (565.66mm)	1.53" (38.86mm)	86th Driest	Driest since: 1970	1925
Oct 1970–Apr 1971 7-Month	23.80" (604.52mm)	22.27" (565.66mm)	1.53" (38.86mm)	43rd Wettest	Wettest since: 1960	2011
Sep 1970–Apr 1971 8-Month	26.93" (684.02mm)	25.83" (656.08mm)	1.10" (27.94mm)	78th Driest	Driest since: 1970	1931
Sep 1970–Apr 1971 8-Month	26.93" (684.02mm)	25.83" (656.08mm)	1.10" (27.94mm)	51st Wettest	Wettest since: 1953	2019
Aug 1970–Apr 1971 9-Month	30.82" (782.83mm)	29.69" (754.13mm)	1.13" (28.70mm)	79th Driest	Driest since: 1970	1931
	30.82" (782.83mm)	29.69" (754.13mm)	1.13" (28.70mm)	50th Wettest	Wettest since: 1956	2019
	Ties: 1922
Jul 1970–Apr 1971 10-Month	36.15" (918.21mm)	33.89" (860.81mm)	2.26" (57.40mm)	87th Driest	Driest since: 1970	1931
Jul 1970–Apr 1971 10-Month	36.15" (918.21mm)	33.89" (860.81mm)	2.26" (57.40mm)	42nd Wettest	Wettest since: 1957	2019
Jun 1970–Apr 1971 11-Month	40.45" (1,027.43mm)	38.05" (966.47mm)	2.40" (60.96mm)	86th Driest	Driest since: 1970	1931
Jun 1970–Apr 1971 11-Month	40.45" (1,027.43mm)	38.05" (966.47mm)	2.40" (60.96mm)	43rd Wettest	Wettest since: 1957	2019
May 1970–Apr 1971 12-Month	43.92" (1,115.57mm)	41.95" (1,065.53mm)	1.97" (50.04mm)	81st Driest	Driest since: 1970	1931
May 1970–Apr 1971 12-Month	43.92" (1,115.57mm)	41.95" (1,065.53mm)	1.97" (50.04mm)	48th Wettest	Wettest since: 1957	2019
Nov 1969–Apr 1971 18-Month	63.73" (1,618.74mm)	61.03" (1,550.16mm)	2.70" (68.58mm)	80th Driest	Driest since: 1970	1931
Nov 1969–Apr 1971 18-Month	63.73" (1,618.74mm)	61.03" (1,550.16mm)	2.70" (68.58mm)	48th Wettest	Wettest since: 1959	2019
May 1969–Apr 1971 24-Month	84.98" (2,158.49mm)	83.91" (2,131.31mm)	1.07" (27.18mm)	64th Driest	Driest since: 1970	1966
May 1969–Apr 1971 24-Month	84.98" (2,158.49mm)	83.91" (2,131.31mm)	1.07" (27.18mm)	64th Wettest	Wettest since: 1957	2020
May 1968–Apr 1971 36-Month	122.75" (3,117.85mm)	125.93" (3,198.62mm)	-3.18" (-80.77mm)	35th Driest	Driest since: 1970	1967
May 1968–Apr 1971 36-Month	122.75" (3,117.85mm)	125.93" (3,198.62mm)	-3.18" (-80.77mm)	92nd Wettest	Wettest since: 1962	2020
May 1967–Apr 1971 48-Month	161.66" (4,106.16mm)	167.93" (4,265.42mm)	-6.27" (-159.26mm)	24th Driest	Driest since: 1970	1966
May 1967–Apr 1971 48-Month	161.66" (4,106.16mm)	167.93" (4,265.42mm)	-6.27" (-159.26mm)	102nd Wettest	Wettest since: 1962	2020
May 1966–Apr 1971 60-Month	196.73" (4,996.94mm)	209.83" (5,329.68mm)	-13.10" (-332.74mm)	12th Driest	Driest since: 1970	1967
May 1966–Apr 1971 60-Month	196.73" (4,996.94mm)	209.83" (5,329.68mm)	-13.10" (-332.74mm)	113th Wettest	Wettest since: 1963	2022

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published May 2023, retrieved on June 3, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings