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 4 Palmer Z-Index
September-November
Period
Z-Index
Rank
(out of 130)
September-November 2024-3.302
September-November 2023-1.8323
September-November 2022-1.9919
September-November 2021-0.9250
September-November 20200.7593
September-November 20192.28124
September-November 20180.6392
September-November 20171.23103
September-November 2016-2.1816
September-November 2015-1.4233
September-November 20142.81128
September-November 20130.1573
September-November 2012-1.0047
September-November 20111.00100
September-November 2010-0.2963
September-November 20090.5990
September-November 2008-0.8552
September-November 2007-2.6011
September-November 20061.42107
September-November 2005-1.5031
September-November 2004-2.0618
September-November 20030.0371
September-November 2002-2.6510
September-November 20011.60113
September-November 2000-1.8124
September-November 1999-2.3713
September-November 1998-1.7227
September-November 1997-1.3436
September-November 19960.8896
September-November 19950.2779
September-November 19940.2882
September-November 19930.4485
September-November 19921.77117
September-November 19911.84118
September-November 19901.28104
September-November 1989-2.3713
September-November 19881.49111
September-November 19870.1674
September-November 19863.33130
September-November 19852.17121
September-November 19841.32105
September-November 19830.8695
September-November 19820.5788
September-November 1981-1.2043
September-November 1980-1.2841
September-November 1979-1.2940
September-November 19781.34106
September-November 19771.20102
September-November 1976-2.699
September-November 19750.5286
September-November 1974-0.5260
September-November 1973-0.3561
September-November 19720.6392
September-November 1971-2.3315
September-November 19701.63114
September-November 19690.9699
September-November 19680.9298
September-November 19670.2175
September-November 1966-0.0470
September-November 19652.46125
September-November 1964-0.3262
September-November 1963-2.747
September-November 1962-1.2242
September-November 19611.49111
September-November 1960-1.1745
September-November 19591.59112
September-November 1958-0.1966
September-November 19570.2882
September-November 1956-1.7426
September-November 1955-2.825
September-November 19542.27123
September-November 1953-1.7525
September-November 1952-2.1417
September-November 19512.25122
September-November 19500.0672
September-November 1949-2.708
September-November 1948-3.033
September-November 1947-1.1944
September-November 1946-1.8921
September-November 19452.48126
September-November 1944-0.2065
September-November 1943-0.9948
September-November 19420.2678
September-November 19412.54127
September-November 19401.88119
September-November 1939-1.6129
September-November 1938-1.8822
September-November 19371.43108
September-November 19360.2477
September-November 1935-1.3238
September-November 19340.9298
September-November 1933-0.2664
September-November 19320.8294
September-November 19311.65115
September-November 1930-2.854
September-November 1929-0.5458
September-November 19282.09120
September-November 19271.44109
September-November 19261.13101
September-November 1925-1.3039
September-November 1924-1.5130
September-November 1923-1.6528
September-November 1922-0.6356
September-November 1921-0.6555
September-November 1920-0.9549
September-November 19190.2477
September-November 1918-0.6157
September-November 1917-0.1767
September-November 1916-0.5359
September-November 19150.3383
September-November 1914-2.756
September-November 1913-1.9320
September-November 19120.2882
September-November 19110.5387
September-November 1910-1.4233
September-November 1909-2.4712
September-November 1908-3.941
September-November 1907-0.9051
September-November 1906-0.8154
September-November 1905-1.1046
September-November 1904-1.3337
September-November 1903-0.0869
September-November 19020.4084
September-November 1901-0.1168
September-November 19001.70116
September-November 1899-0.8353
September-November 18980.5889
September-November 1897-1.4135
September-November 18963.06129
September-November 1895-1.4832

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