Please note, Degree Days and Palmer Indices are not available for Alaska or Hawaii. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales. Data are available for bulk download.
Base Period
Trend

Filter
Pennsylvania, Climate Division 8 Palmer Z-Index
November-January
Period
Z-Index
Rank
(out of 130)
November 2024-January 2025-1.5513
November 2023-January 20241.31112
November 2022-January 20231.02102
November 2021-January 2022-0.5740
November 2020-January 2021-0.4844
November 2019-January 20200.3480
November 2018-January 20192.88129
November 2017-January 2018-0.6735
November 2016-January 2017-0.8529
November 2015-January 2016-0.8030
November 2014-January 2015-0.5541
November 2013-January 2014-0.0560
November 2012-January 20130.3782
November 2011-January 20121.09104
November 2010-January 2011-0.0858
November 2009-January 20100.6793
November 2008-January 20090.3077
November 2007-January 20080.5387
November 2006-January 20070.0967
November 2005-January 20060.85101
November 2004-January 20051.43116
November 2003-January 20041.79120
November 2002-January 20030.6391
November 2001-January 2002-3.122
November 2000-January 2001-0.7533
November 1999-January 2000-1.2817
November 1998-January 1999-2.524
November 1997-January 19982.93130
November 1996-January 19971.14106
November 1995-January 19962.34126
November 1994-January 19950.5589
November 1993-January 19941.99121
November 1992-January 19930.7196
November 1991-January 1992-1.5712
November 1990-January 19911.10105
November 1989-January 1990-0.4447
November 1988-January 1989-0.6038
November 1987-January 1988-0.5442
November 1986-January 19871.23108
November 1985-January 19861.32113
November 1984-January 1985-0.0560
November 1983-January 19840.4685
November 1982-January 1983-1.4415
November 1981-January 1982-0.5442
November 1980-January 1981-1.6211
November 1979-January 1980-0.3550
November 1978-January 19791.38115
November 1977-January 19782.48127
November 1976-January 1977-1.2619
November 1975-January 19760.1368
November 1974-January 19750.5186
November 1973-January 19741.21107
November 1972-January 19732.25125
November 1971-January 19720.2575
November 1970-January 19712.21124
November 1969-January 19700.1970
November 1968-January 1969-0.4248
November 1967-January 19680.2371
November 1966-January 1967-1.1923
November 1965-January 1966-2.247
November 1964-January 1965-0.9624
November 1963-January 19640.2473
November 1962-January 1963-0.7533
November 1961-January 1962-0.7931
November 1960-January 1961-1.6310
November 1959-January 19600.6894
November 1958-January 1959-0.4149
November 1957-January 1958-0.0364
November 1956-January 19570.1569
November 1955-January 1956-1.2420
November 1954-January 1955-0.0759
November 1953-January 1954-2.515
November 1952-January 19531.28111
November 1951-January 19521.28111
November 1950-January 19512.71128
November 1949-January 1950-0.2555
November 1948-January 19492.13123
November 1947-January 1948-0.6637
November 1946-January 1947-0.6735
November 1945-January 19460.6492
November 1944-January 1945-0.6038
November 1943-January 1944-1.2420
November 1942-January 19431.04103
November 1941-January 1942-0.4545
November 1940-January 19410.3983
November 1939-January 1940-1.798
November 1938-January 1939-1.2022
November 1937-January 1938-0.3152
November 1936-January 19372.10122
November 1935-January 19360.7699
November 1934-January 19350.4184
November 1933-January 1934-0.1957
November 1932-January 1933-0.0560
November 1931-January 1932-1.2817
November 1930-January 1931-3.581
November 1929-January 1930-0.3251
November 1928-January 1929-1.3116
November 1927-January 19280.3581
November 1926-January 19270.80100
November 1925-January 19260.3378
November 1924-January 1925-0.7832
November 1923-January 19241.66119
November 1922-January 1923-1.699
November 1921-January 19221.27109
November 1920-January 19210.3480
November 1919-January 19200.2473
November 1918-January 1919-0.8728
November 1917-January 1918-0.3053
November 1916-January 1917-0.0560
November 1915-January 1916-0.0364
November 1914-January 19150.2575
November 1913-January 19140.7297
November 1912-January 19130.5589
November 1911-January 1912-0.0364
November 1910-January 1911-0.9326
November 1909-January 1910-0.2456
November 1908-January 1909-2.793
November 1907-January 19081.46118
November 1906-January 19070.7196
November 1905-January 19060.6090
November 1904-January 1905-1.5014
November 1903-January 1904-0.2754
November 1902-January 19030.7498
November 1901-January 19021.44117
November 1900-January 1901-0.4545
November 1899-January 1900-0.9425
November 1898-January 18990.3077
November 1897-January 18981.36114
November 1896-January 1897-0.9227
November 1895-January 1896-2.476

Citing This Page