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
Michigan, Climate Division 8 Palmer Z-Index
December-February
Period
Z-Index
Rank
(out of 130)
December 2024-February 2025-0.4335
December 2023-February 20240.4580
December 2022-February 20231.45117
December 2021-February 20220.4377
December 2020-February 2021-0.6431
December 2019-February 20201.08113
December 2018-February 20190.6693
December 2017-February 20181.85122
December 2016-February 20170.98108
December 2015-February 20160.5685
December 2014-February 2015-0.7026
December 2013-February 20140.92107
December 2012-February 20131.72121
December 2011-February 20120.81101
December 2010-February 2011-0.4834
December 2009-February 2010-0.1645
December 2008-February 20092.20127
December 2007-February 20082.44129
December 2006-February 20071.29115
December 2005-February 20060.5986
December 2004-February 20052.14125
December 2003-February 2004-0.7624
December 2002-February 2003-1.666
December 2001-February 20020.1260
December 2000-February 20010.6894
December 1999-February 2000-0.9716
December 1998-February 1999-0.3042
December 1997-February 19980.4478
December 1996-February 19972.25128
December 1995-February 1996-0.8420
December 1994-February 1995-0.1148
December 1993-February 19940.0053
December 1992-February 19930.91105
December 1991-February 1992-0.3838
December 1990-February 1991-0.4335
December 1989-February 19900.4781
December 1988-February 1989-0.6828
December 1987-February 19880.82102
December 1986-February 1987-1.447
December 1985-February 19860.1662
December 1984-February 19852.20127
December 1983-February 1984-0.3838
December 1982-February 19830.3672
December 1981-February 1982-0.1446
December 1980-February 19810.0155
December 1979-February 1980-0.3241
December 1978-February 19790.6391
December 1977-February 19780.6289
December 1976-February 1977-1.1912
December 1975-February 19761.06111
December 1974-February 19751.03110
December 1973-February 19741.59119
December 1972-February 19730.7698
December 1971-February 19720.2567
December 1970-February 19710.1461
December 1969-February 1970-1.379
December 1968-February 19690.4982
December 1967-February 19680.86103
December 1966-February 19670.92107
December 1965-February 19660.6087
December 1964-February 19650.7396
December 1963-February 1964-1.695
December 1962-February 1963-0.9915
December 1961-February 19620.2868
December 1960-February 1961-2.263
December 1959-February 19601.92123
December 1958-February 19590.0558
December 1957-February 1958-0.1050
December 1956-February 1957-1.844
December 1955-February 1956-0.9517
December 1954-February 19550.1662
December 1953-February 1954-0.8619
December 1952-February 1953-0.3440
December 1951-February 19520.6492
December 1950-February 19510.3873
December 1949-February 19502.84130
December 1948-February 19490.91105
December 1947-February 1948-0.1744
December 1946-February 1947-0.1148
December 1945-February 1946-0.1943
December 1944-February 1945-2.452
December 1943-February 1944-1.3311
December 1942-February 19430.3571
December 1941-February 1942-0.5432
December 1940-February 1941-0.3937
December 1939-February 1940-1.1713
December 1938-February 19390.2466
December 1937-February 19381.38116
December 1936-February 19370.6289
December 1935-February 19360.0457
December 1934-February 1935-0.0951
December 1933-February 1934-1.388
December 1932-February 19330.0859
December 1931-February 19320.4176
December 1930-February 1931-3.231
December 1929-February 19300.5484
December 1928-February 19290.4176
December 1927-February 19280.3571
December 1926-February 1927-0.8918
December 1925-February 19260.4580
December 1924-February 1925-0.5233
December 1923-February 19240.6391
December 1922-February 1923-0.7125
December 1921-February 19220.1964
December 1920-February 1921-0.7923
December 1919-February 1920-1.3410
December 1918-February 19190.0356
December 1917-February 1918-0.0252
December 1916-February 1917-0.8321
December 1915-February 19160.2265
December 1914-February 1915-0.6530
December 1913-February 1914-0.6729
December 1912-February 19130.0053
December 1911-February 19120.4176
December 1910-February 19110.3169
December 1909-February 19100.80100
December 1908-February 19090.7295
December 1907-February 19081.95124
December 1906-February 19070.7999
December 1905-February 19060.5083
December 1904-February 1905-0.8222
December 1903-February 19040.7597
December 1902-February 19031.24114
December 1901-February 1902-1.1314
December 1900-February 1901-0.6927
December 1899-February 19001.07112
December 1898-February 1899-0.1446
December 1897-February 18981.00109
December 1896-February 18971.48118
December 1895-February 18961.68120

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