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, May 1929

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Record Driest

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Wettest/Driest Since	Record
May 1929 1-Month	5.03" (127.76mm)	3.93" (99.82mm)	1.10" (27.94mm)	96th Driest	Driest since: 1928	1964
May 1929 1-Month	5.03" (127.76mm)	3.93" (99.82mm)	1.10" (27.94mm)	33rd Wettest	Wettest since: 1924	1989
Apr–May 1929 2-Month	11.42" (290.07mm)	7.57" (192.28mm)	3.85" (97.79mm)	126th Driest	Driest since: 1928	1926
Apr–May 1929 2-Month	11.42" (290.07mm)	7.57" (192.28mm)	3.85" (97.79mm)	3rd Wettest	Wettest to Date	2011
Mar–May 1929 3-Month	14.26" (362.20mm)	11.06" (280.92mm)	3.20" (81.28mm)	118th Driest	Driest since: 1928	1926
Mar–May 1929 3-Month	14.26" (362.20mm)	11.06" (280.92mm)	3.20" (81.28mm)	11th Wettest	Wettest since: 1908	2011
Feb–May 1929 4-Month	16.99" (431.55mm)	13.66" (346.96mm)	3.33" (84.59mm)	115th Driest	Driest since: 1928	1941
Feb–May 1929 4-Month	16.99" (431.55mm)	13.66" (346.96mm)	3.33" (84.59mm)	14th Wettest	Wettest since: 1908	2011
Jan–May 1929 5-Month	20.41" (518.41mm)	16.71" (424.43mm)	3.70" (93.98mm)	119th Driest	Driest since: 1928	1941
Jan–May 1929 5-Month	20.41" (518.41mm)	16.71" (424.43mm)	3.70" (93.98mm)	10th Wettest	Wettest since: 1908	2011
Dec 1928–May 1929 6-Month	21.54" (547.12mm)	19.81" (503.17mm)	1.73" (43.95mm)	90th Driest	Driest since: 1928	1941
Dec 1928–May 1929 6-Month	21.54" (547.12mm)	19.81" (503.17mm)	1.73" (43.95mm)	38th Wettest	Wettest since: 1924	2011
Nov 1928–May 1929 7-Month	24.01" (609.85mm)	23.02" (584.71mm)	0.99" (25.14mm)	81st Driest	Driest since: 1926	1934
Nov 1928–May 1929 7-Month	24.01" (609.85mm)	23.02" (584.71mm)	0.99" (25.14mm)	47th Wettest	Wettest since: 1928	1952
Oct 1928–May 1929 8-Month	26.00" (660.40mm)	26.19" (665.23mm)	-0.19" (-4.83mm)	61st Driest	Driest since: 1926	1925
Oct 1928–May 1929 8-Month	26.00" (660.40mm)	26.19" (665.23mm)	-0.19" (-4.83mm)	67th Wettest	Wettest since: 1928	2011
Sep 1928–May 1929 9-Month	28.26" (717.80mm)	29.75" (755.65mm)	-1.49" (-37.85mm)	41st Driest	Driest since: 1926	1941
Sep 1928–May 1929 9-Month	28.26" (717.80mm)	29.75" (755.65mm)	-1.49" (-37.85mm)	87th Wettest	Wettest since: 1928	2019
Aug 1928–May 1929 10-Month	32.64" (829.06mm)	33.62" (853.95mm)	-0.98" (-24.89mm)	50th Driest	Driest since: 1926	1931
Aug 1928–May 1929 10-Month	32.64" (829.06mm)	33.62" (853.95mm)	-0.98" (-24.89mm)	78th Wettest	Wettest since: 1928	2019
Jul 1928–May 1929 11-Month	38.02" (965.71mm)	37.82" (960.63mm)	0.20" (5.08mm)	58th Driest	Driest since: 1926	1931
	38.02" (965.71mm)	37.82" (960.63mm)	0.20" (5.08mm)	70th Wettest	Wettest since: 1928	2019
	Ties: 2003
Jun 1928–May 1929 12-Month	46.04" (1,169.42mm)	41.97" (1,066.04mm)	4.07" (103.38mm)	99th Driest	Driest since: 1926	1931
	46.04" (1,169.42mm)	41.97" (1,066.04mm)	4.07" (103.38mm)	29th Wettest	Wettest since: 1928	2019
	Ties: 1991
Dec 1927–May 1929 18-Month	66.77" (1,695.96mm)	61.76" (1,568.70mm)	5.01" (127.26mm)	99th Driest	Driest since: 1928	1931
Dec 1927–May 1929 18-Month	66.77" (1,695.96mm)	61.76" (1,568.70mm)	5.01" (127.26mm)	28th Wettest	Wettest since: 1913	2019
Jun 1927–May 1929 24-Month	92.29" (2,344.17mm)	83.91" (2,131.31mm)	8.38" (212.86mm)	105th Driest	Driest since: 1927	1931
Jun 1927–May 1929 24-Month	92.29" (2,344.17mm)	83.91" (2,131.31mm)	8.38" (212.86mm)	22nd Wettest	Wettest since: 1928	2019
Jun 1926–May 1929 36-Month	140.20" (3,561.08mm)	125.93" (3,198.62mm)	14.27" (362.46mm)	112th Driest	Driest since: 1928	1965
Jun 1926–May 1929 36-Month	140.20" (3,561.08mm)	125.93" (3,198.62mm)	14.27" (362.46mm)	14th Wettest	Wettest to Date	2020
Jun 1925–May 1929 48-Month	177.00" (4,495.80mm)	167.92" (4,265.17mm)	9.08" (230.63mm)	93rd Driest	Driest since: 1928	1966
Jun 1925–May 1929 48-Month	177.00" (4,495.80mm)	167.92" (4,265.17mm)	9.08" (230.63mm)	32nd Wettest	Wettest since: 1904	2020
Jun 1924–May 1929 60-Month	213.88" (5,432.55mm)	209.84" (5,329.94mm)	4.04" (102.61mm)	66th Driest	Driest since: 1928	1967
Jun 1924–May 1929 60-Month	213.88" (5,432.55mm)	209.84" (5,329.94mm)	4.04" (102.61mm)	58th Wettest	Wettest since: 1916	2022

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published March 2023, retrieved on March 22, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings