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

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Pennsylvania, Climate Division 3 Palmer Z-IndexAugust-October18952024190519151925193519451955196519751985199520052015-3.006.00-2.00-1.000.001.002.003.004.005.00-3.006.00-2.00-1.000.001.002.003.004.005.00ZingChart
Pennsylvania, Climate Division 3 Palmer Z-Index
August-October
Period
Z-Index
Rank
(out of 130)
August-October 2024-2.313
August-October 2023-0.3551
August-October 2022-0.5743
August-October 20212.34119
August-October 20201.30102
August-October 20190.1571
August-October 20183.17128
August-October 20170.8389
August-October 2016-1.8912
August-October 2015-0.0562
August-October 2014-0.7937
August-October 20130.7286
August-October 20121.63107
August-October 20115.47130
August-October 20100.0567
August-October 20093.09127
August-October 2008-0.3352
August-October 2007-0.7640
August-October 20061.28101
August-October 20050.0465
August-October 20042.10116
August-October 20033.02126
August-October 20020.1168
August-October 2001-1.7013
August-October 20000.1369
August-October 19992.04113
August-October 1998-1.4121
August-October 1997-1.1827
August-October 19961.88110
August-October 1995-0.2154
August-October 1994-0.0661
August-October 19930.9996
August-October 1992-0.4847
August-October 1991-0.8833
August-October 19900.6085
August-October 19890.8690
August-October 1988-0.7937
August-October 19871.0097
August-October 1986-0.7937
August-October 19850.3776
August-October 1984-1.0629
August-October 1983-1.3224
August-October 1982-1.3025
August-October 1981-0.4050
August-October 1980-1.9011
August-October 19792.42121
August-October 1978-0.1658
August-October 19770.6085
August-October 19762.14117
August-October 19752.08115
August-October 19740.7788
August-October 1973-0.4748
August-October 1972-1.5417
August-October 19712.64124
August-October 1970-0.7341
August-October 1969-0.5544
August-October 1968-1.4220
August-October 19670.8992
August-October 1966-0.0164
August-October 1965-0.9132
August-October 1964-2.372
August-October 1963-1.5815
August-October 1962-0.1658
August-October 1961-1.4419
August-October 19601.1499
August-October 19590.1470
August-October 19580.9996
August-October 1957-2.046
August-October 19560.6085
August-October 19553.58129
August-October 1954-0.2055
August-October 1953-1.3722
August-October 19520.2375
August-October 1951-1.0430
August-October 1950-0.0960
August-October 1949-1.3423
August-October 1948-0.4748
August-October 1947-1.1926
August-October 19460.1873
August-October 19450.8791
August-October 1944-0.8634
August-October 1943-0.5544
August-October 19422.43122
August-October 1941-2.264
August-October 19400.7387
August-October 19390.0567
August-October 19380.9193
August-October 19371.38103
August-October 1936-1.1128
August-October 19350.2274
August-October 19341.47104
August-October 19332.80125
August-October 1932-0.1757
August-October 1931-0.5146
August-October 1930-2.721
August-October 19290.9594
August-October 19280.4680
August-October 19272.05114
August-October 19261.70108
August-October 1925-0.1856
August-October 1924-0.0463
August-October 1923-0.2553
August-October 1922-1.969
August-October 1921-1.6514
August-October 19200.1873
August-October 19190.5182
August-October 1918-1.998
August-October 19171.17100
August-October 1916-1.4618
August-October 19151.62106
August-October 1914-2.215
August-October 19130.4881
August-October 19120.3978
August-October 19112.58123
August-October 1910-0.7042
August-October 1909-2.027
August-October 1908-0.8335
August-October 19071.88110
August-October 19061.62106
August-October 19052.03112
August-October 19042.20118
August-October 19031.95111
August-October 19022.41120
August-October 19011.0398
August-October 1900-1.5616
August-October 18990.3877
August-October 18980.4479
August-October 1897-1.0231
August-October 1896-0.8236
August-October 1895-1.969

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