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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Washington, Climate Division 1 Palmer Z-IndexOctober-December18952024190519151925193519451955196519751985199520052015-4.004.00-3.00-2.00-1.000.001.002.003.00-4.004.00-3.00-2.00-1.000.001.002.003.00ZingChart
Washington, Climate Division 1 Palmer Z-Index
October-December
Period
Z-Index
Rank
(out of 130)
October-December 20240.5988
October-December 2023-0.5340
October-December 2022-0.2850
October-December 20211.46120
October-December 2020-0.1957
October-December 2019-1.5211
October-December 20180.1969
October-December 20170.6289
October-December 20162.03128
October-December 20151.31113
October-December 20140.4583
October-December 2013-3.051
October-December 20121.84125
October-December 2011-1.4313
October-December 20100.4685
October-December 20090.6693
October-December 2008-0.7932
October-December 2007-0.1758
October-December 20061.24109
October-December 2005-0.2850
October-December 2004-1.1019
October-December 20031.40119
October-December 2002-0.6234
October-December 20010.87100
October-December 2000-2.134
October-December 19991.37115
October-December 19982.35129
October-December 1997-0.2555
October-December 19961.50123
October-December 19951.48122
October-December 19941.38116
October-December 1993-1.3414
October-December 1992-1.1918
October-December 1991-1.0820
October-December 19901.66124
October-December 1989-0.9827
October-December 1988-0.8031
October-December 1987-0.9728
October-December 1986-0.9429
October-December 1985-1.2017
October-December 19840.4282
October-December 1983-0.2654
October-December 19820.3678
October-December 19810.5387
October-December 19800.0766
October-December 19790.8298
October-December 1978-2.793
October-December 19770.4282
October-December 1976-2.932
October-December 19753.21130
October-December 1974-0.2753
October-December 19731.28111
October-December 1972-0.5539
October-December 19710.0163
October-December 19700.3476
October-December 1969-1.5112
October-December 19680.6592
October-December 19671.39117
October-December 19661.31113
October-December 1965-0.0662
October-December 1964-1.0124
October-December 19630.94103
October-December 19620.2573
October-December 19610.0665
October-December 1960-0.4144
October-December 1959-0.5638
October-December 19580.5086
October-December 1957-0.6035
October-December 19560.2472
October-December 19551.92126
October-December 19540.1567
October-December 19530.3375
October-December 1952-1.0025
October-December 19510.0163
October-December 19501.40119
October-December 19490.8298
October-December 19480.3779
October-December 19470.6592
October-December 1946-0.3945
October-December 19450.2170
October-December 1944-1.837
October-December 1943-1.5710
October-December 1942-0.2949
October-December 1941-0.5936
October-December 1940-0.1160
October-December 19390.2674
October-December 1938-0.2850
October-December 19371.13105
October-December 1936-1.809
October-December 1935-1.936
October-December 19340.88101
October-December 19332.01127
October-December 19320.8399
October-December 19310.2271
October-December 1930-2.085
October-December 1929-1.818
October-December 1928-0.7433
October-December 1927-0.3148
October-December 1926-0.1459
October-December 1925-0.5737
October-December 19240.7895
October-December 1923-1.2216
October-December 1922-1.0222
October-December 19210.7294
October-December 19200.3577
October-December 1919-1.0222
October-December 19180.4685
October-December 19170.6592
October-December 1916-1.3115
October-December 19151.48122
October-December 1914-1.0025
October-December 1913-0.9330
October-December 19120.1668
October-December 1911-1.0721
October-December 19101.17106
October-December 19091.22107
October-December 1908-0.3846
October-December 1907-0.2555
October-December 19061.33114
October-December 1905-0.4443
October-December 19040.4080
October-December 1903-0.4542
October-December 19020.7996
October-December 1901-0.3846
October-December 19000.90102
October-December 18991.24109
October-December 1898-0.5340
October-December 18971.28111
October-December 18961.05104
October-December 1895-0.0861

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