Divisional Time Series

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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
Illinois, Climate Division 6 Palmer Z-IndexOctober-December18952024190519151925193519451955196519751985199520052015-4.005.00-3.00-2.00-1.000.001.002.003.004.00-4.005.00-3.00-2.00-1.000.001.002.003.004.00ZingChart
Illinois, Climate Division 6 Palmer Z-Index
October-December
Period
Z-Index
Rank
(out of 130)
October-December 20240.3984
October-December 2023-1.1831
October-December 20220.1472
October-December 20210.5990
October-December 2020-0.7843
October-December 20190.9299
October-December 20180.4686
October-December 2017-1.5417
October-December 2016-0.9938
October-December 20152.66124
October-December 20141.86117
October-December 2013-0.9539
October-December 2012-0.1861
October-December 2011-0.6446
October-December 20100.0065
October-December 20094.76130
October-December 20080.7893
October-December 2007-1.2229
October-December 20060.2575
October-December 2005-1.4422
October-December 20042.04121
October-December 20031.12102
October-December 2002-0.7544
October-December 20011.47111
October-December 20000.4888
October-December 1999-2.334
October-December 1998-0.3752
October-December 1997-0.8342
October-December 1996-0.4050
October-December 1995-1.3128
October-December 19940.1170
October-December 19931.17104
October-December 19921.24105
October-December 19910.8194
October-December 19902.41123
October-December 1989-2.422
October-December 19880.3280
October-December 19870.3079
October-December 19861.29106
October-December 19852.92128
October-December 19841.69116
October-December 19832.20122
October-December 19823.02129
October-December 19810.2777
October-December 1980-1.5616
October-December 1979-1.5417
October-December 1978-0.4449
October-December 19771.51112
October-December 1976-0.9240
October-December 1975-0.7544
October-December 1974-0.2954
October-December 19731.38109
October-December 19721.10100
October-December 1971-0.3851
October-December 19700.3079
October-December 19691.69116
October-December 19680.4787
October-December 19672.82127
October-December 19660.3381
October-December 1965-0.8841
October-December 1964-1.878
October-December 1963-2.216
October-December 1962-0.3353
October-December 19610.9299
October-December 1960-1.3627
October-December 19590.0267
October-December 1958-0.5848
October-December 19570.5489
October-December 1956-1.2130
October-December 1955-0.2755
October-December 1954-1.1733
October-December 1953-3.141
October-December 1952-1.5913
October-December 19510.0969
October-December 1950-1.4621
October-December 19491.30107
October-December 19480.0768
October-December 1947-1.1831
October-December 19462.73125
October-December 19450.2676
October-December 1944-2.147
October-December 1943-1.4123
October-December 19421.92119
October-December 19412.81126
October-December 1940-1.6012
October-December 1939-1.5715
October-December 1938-1.4024
October-December 1937-0.1762
October-December 1936-0.2260
October-December 19350.2474
October-December 1934-0.2755
October-December 1933-1.7210
October-December 19320.8495
October-December 19310.2474
October-December 1930-2.363
October-December 19290.6691
October-December 19280.4285
October-December 19271.96120
October-December 19261.90118
October-December 19251.16103
October-December 1924-0.1163
October-December 19231.56113
October-December 1922-1.5220
October-December 19210.0166
October-December 1920-1.5913
October-December 19191.69116
October-December 19180.3783
October-December 1917-1.6211
October-December 1916-1.1034
October-December 19150.1371
October-December 1914-1.5319
October-December 1913-0.2755
October-December 1912-1.0436
October-December 19110.8797
October-December 1910-0.2459
October-December 19091.39110
October-December 1908-2.285
October-December 19070.3582
October-December 1906-0.0164
October-December 19051.35108
October-December 1904-1.3925
October-December 1903-1.3726
October-December 19020.8696
October-December 1901-1.749
October-December 1900-1.0037
October-December 1899-0.5947
October-December 18981.12102
October-December 1897-1.1034
October-December 1896-0.2755
October-December 18950.7192

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