Divisional Time Series

Data Info Data Service
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
Iowa, Climate Division 5 Palmer Z-Index
October-December
Period
Z-Index
Rank
(out of 130)
October-December 20240.0665
October-December 2023-1.1921
October-December 2022-0.6340
October-December 20210.4981
October-December 2020-0.3253
October-December 20192.09122
October-December 20182.41124
October-December 2017-0.0862
October-December 2016-0.1461
October-December 20153.11130
October-December 20140.9498
October-December 2013-0.9429
October-December 2012-0.9231
October-December 2011-0.4846
October-December 2010-0.2954
October-December 20092.85127
October-December 20081.17107
October-December 20071.75118
October-December 20060.97100
October-December 2005-1.1622
October-December 2004-0.3451
October-December 20030.4176
October-December 2002-0.2456
October-December 2001-0.7537
October-December 2000-0.3451
October-December 1999-1.929
October-December 19980.2071
October-December 19970.3174
October-December 19961.13105
October-December 1995-0.9330
October-December 19940.2673
October-December 1993-0.0364
October-December 19921.56114
October-December 19911.83119
October-December 1990-0.0463
October-December 1989-1.0925
October-December 1988-1.4516
October-December 19870.7792
October-December 19861.10104
October-December 19850.5586
October-December 19841.60115
October-December 19832.78126
October-December 19823.06129
October-December 1981-0.1957
October-December 1980-1.5513
October-December 19790.9297
October-December 19780.7091
October-December 19771.45112
October-December 1976-2.274
October-December 1975-1.2120
October-December 19740.98101
October-December 19731.19108
October-December 19721.98121
October-December 19710.5887
October-December 19701.42111
October-December 19690.6189
October-December 19681.16106
October-December 1967-0.8532
October-December 1966-1.998
October-December 19650.2372
October-December 1964-1.0626
October-December 1963-2.046
October-December 1962-1.0128
October-December 19611.54113
October-December 1960-0.7735
October-December 19590.8695
October-December 1958-1.0427
October-December 19570.8094
October-December 1956-1.8510
October-December 1955-2.423
October-December 19540.4477
October-December 1953-2.442
October-December 1952-0.4846
October-December 19511.00102
October-December 1950-2.046
October-December 1949-1.5513
October-December 19480.1467
October-December 19470.3975
October-December 19460.4981
October-December 1945-0.4249
October-December 1944-0.5743
October-December 1943-0.1859
October-December 19420.4779
October-December 19412.65125
October-December 19400.1970
October-December 1939-2.125
October-December 1938-0.6739
October-December 1937-1.2919
October-December 1936-0.5444
October-December 19351.36110
October-December 1934-0.1660
October-December 1933-1.7912
October-December 19320.6290
October-December 19313.06129
October-December 1930-1.3818
October-December 1929-0.5345
October-December 19281.85120
October-December 1927-0.5842
October-December 19260.5484
October-December 19250.8094
October-December 1924-0.7138
October-December 1923-0.6141
October-December 1922-0.4348
October-December 1921-0.3850
October-December 19200.1868
October-December 19191.71117
October-December 19180.4779
October-December 1917-1.4715
October-December 1916-0.8532
October-December 1915-0.1957
October-December 19140.5988
October-December 1913-0.7636
October-December 19120.5283
October-December 19111.65116
October-December 1910-2.511
October-December 19092.10123
October-December 19080.5082
October-December 19070.1970
October-December 19060.1266
October-December 19051.07103
October-December 1904-1.1323
October-December 1903-0.8532
October-December 19021.32109
October-December 1901-1.4516
October-December 19000.5586
October-December 1899-1.1224
October-December 18980.8896
October-December 1897-1.8510
October-December 18960.9699
October-December 1895-0.2954

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