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 4 Palmer Z-IndexNovember-January18962025190619161926193619461956196619761986199620062016-4.004.00-3.00-2.00-1.000.001.002.003.00-4.004.00-3.00-2.00-1.000.001.002.003.00ZingChart
Pennsylvania, Climate Division 4 Palmer Z-Index
November-January
Period
Z-Index
Rank
(out of 130)
November 2024-January 2025-2.273
November 2023-January 20240.80100
November 2022-January 20230.1066
November 2021-January 2022-1.2722
November 2020-January 2021-0.7136
November 2019-January 20200.3080
November 2018-January 20193.44130
November 2017-January 2018-0.7834
November 2016-January 2017-1.7812
November 2015-January 2016-0.6042
November 2014-January 2015-0.2353
November 2013-January 20140.4584
November 2012-January 20130.0263
November 2011-January 20120.6292
November 2010-January 2011-0.6439
November 2009-January 20100.6994
November 2008-January 20090.5888
November 2007-January 2008-0.6738
November 2006-January 20070.0059
November 2005-January 20060.5086
November 2004-January 20050.94109
November 2003-January 20040.7297
November 2002-January 20030.83102
November 2001-January 2002-3.461
November 2000-January 2001-0.4846
November 1999-January 2000-0.6340
November 1998-January 1999-2.096
November 1997-January 19981.64122
November 1996-January 19971.37116
November 1995-January 19962.15127
November 1994-January 19950.7095
November 1993-January 19941.95124
November 1992-January 19930.7999
November 1991-January 1992-1.4018
November 1990-January 19910.7196
November 1989-January 1990-0.2254
November 1988-January 1989-1.1525
November 1987-January 19880.0059
November 1986-January 19871.40118
November 1985-January 19860.2173
November 1984-January 1985-0.7535
November 1983-January 19841.31115
November 1982-January 1983-1.8011
November 1981-January 1982-0.6837
November 1980-January 1981-2.096
November 1979-January 1980-0.9928
November 1978-January 19791.52121
November 1977-January 19783.05129
November 1976-January 1977-1.5017
November 1975-January 19760.4985
November 1974-January 19750.2978
November 1973-January 19740.5687
November 1972-January 19732.30128
November 1971-January 19720.0059
November 1970-January 19711.15113
November 1969-January 19700.0564
November 1968-January 1969-0.8033
November 1967-January 19680.4483
November 1966-January 1967-0.4049
November 1965-January 1966-1.959
November 1964-January 1965-1.3620
November 1963-January 19640.7498
November 1962-January 19630.0059
November 1961-January 1962-0.8830
November 1960-January 1961-0.5643
November 1959-January 1960-0.5044
November 1958-January 1959-0.8830
November 1957-January 19580.89105
November 1956-January 19570.2072
November 1955-January 1956-1.5416
November 1954-January 1955-1.0027
November 1953-January 1954-1.4018
November 1952-January 19532.07125
November 1951-January 19521.80123
November 1950-January 19511.41119
November 1949-January 1950-1.2223
November 1948-January 19492.14126
November 1947-January 19480.3381
November 1946-January 1947-0.6241
November 1945-January 19460.84103
November 1944-January 19450.2576
November 1943-January 1944-0.1355
November 1942-January 19430.6693
November 1941-January 1942-1.1525
November 1940-January 19410.94109
November 1939-January 1940-1.6513
November 1938-January 19390.2877
November 1937-January 1938-0.4945
November 1936-January 19371.07111
November 1935-January 19361.15113
November 1934-January 19350.83102
November 1933-January 1934-0.9029
November 1932-January 19330.6189
November 1931-January 1932-2.144
November 1930-January 1931-3.072
November 1929-January 1930-0.3252
November 1928-January 1929-0.8432
November 1927-January 19280.1769
November 1926-January 19270.6292
November 1925-January 19260.1668
November 1924-January 1925-0.4547
November 1923-January 19240.94109
November 1922-January 1923-1.6214
November 1921-January 19220.1870
November 1920-January 19210.4483
November 1919-January 19200.3080
November 1918-January 1919-0.3750
November 1917-January 1918-0.0958
November 1916-January 1917-0.1156
November 1915-January 1916-0.1057
November 1914-January 19150.89105
November 1913-January 19140.6292
November 1912-January 19130.2274
November 1911-January 19120.1267
November 1910-January 1911-1.5615
November 1909-January 1910-1.2024
November 1908-January 1909-2.115
November 1907-January 19081.38117
November 1906-January 19070.2072
November 1905-January 19060.2576
November 1904-January 19050.1066
November 1903-January 1904-0.3451
November 1902-January 19031.52121
November 1901-January 19020.94109
November 1900-January 1901-1.2821
November 1899-January 1900-0.4448
November 1898-January 18990.96110
November 1897-January 18981.19114
November 1896-January 1897-2.018
November 1895-January 1896-1.9410

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