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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Oregon, Climate Division 7 Palmer Z-IndexOctober-December18952024190519151925193519451955196519751985199520052015-3.004.00-2.00-1.000.001.002.003.00-3.004.00-2.00-1.000.001.002.003.00ZingChart
Oregon, Climate Division 7 Palmer Z-Index
October-December
Period
Z-Index
Rank
(out of 130)
October-December 20240.96102
October-December 2023-1.3422
October-December 2022-0.4057
October-December 2021-0.4853
October-December 2020-1.1928
October-December 2019-1.6512
October-December 2018-1.1332
October-December 2017-1.0735
October-December 20160.4888
October-December 20150.3783
October-December 20140.2980
October-December 2013-1.946
October-December 20120.3884
October-December 2011-1.6611
October-December 20101.71116
October-December 2009-0.7145
October-December 2008-1.2627
October-December 20070.2073
October-December 2006-0.0167
October-December 20051.93120
October-December 2004-0.0465
October-December 2003-0.4952
October-December 2002-1.5518
October-December 20010.0871
October-December 2000-0.2961
October-December 1999-2.104
October-December 19980.99106
October-December 1997-1.1332
October-December 19962.30126
October-December 19950.4186
October-December 19940.0368
October-December 1993-1.0934
October-December 19920.8498
October-December 1991-0.4655
October-December 1990-1.5717
October-December 1989-2.035
October-December 1988-0.0167
October-December 1987-1.4520
October-December 1986-1.6810
October-December 1985-0.3359
October-December 19842.43127
October-December 19832.54128
October-December 19821.41111
October-December 19813.45130
October-December 1980-0.6446
October-December 19790.6694
October-December 1978-1.3422
October-December 19770.5793
October-December 1976-2.981
October-December 19750.2777
October-December 1974-1.5518
October-December 19732.29125
October-December 1972-0.4754
October-December 19710.0770
October-December 19701.47112
October-December 19690.3081
October-December 19680.99106
October-December 1967-1.5815
October-December 19660.7397
October-December 1965-1.1928
October-December 19642.97129
October-December 1963-0.5451
October-December 19622.16123
October-December 19610.5692
October-December 19600.2374
October-December 1959-2.333
October-December 1958-1.699
October-December 19571.63115
October-December 19560.5089
October-December 19551.82119
October-December 1954-1.907
October-December 19530.1972
October-December 1952-1.3422
October-December 19511.52114
October-December 19501.73117
October-December 1949-1.6512
October-December 19480.5591
October-December 19470.3582
October-December 19460.5591
October-December 19451.00108
October-December 1944-0.2762
October-December 1943-0.9240
October-December 19421.98121
October-December 19410.93100
October-December 19400.2676
October-December 1939-1.2926
October-December 1938-0.5749
October-December 19370.94101
October-December 1936-2.562
October-December 1935-1.0735
October-December 1934-0.3458
October-December 1933-1.858
October-December 1932-1.6014
October-December 1931-0.3160
October-December 1930-1.5815
October-December 1929-1.0637
October-December 1928-1.3025
October-December 19270.4587
October-December 19261.00108
October-December 1925-0.7244
October-December 19240.98104
October-December 19230.6896
October-December 19220.6795
October-December 1921-0.5650
October-December 19201.26110
October-December 19190.2676
October-December 1918-0.9141
October-December 1917-1.3921
October-December 1916-0.6147
October-December 19150.0770
October-December 1914-0.8242
October-December 19130.2980
October-December 1912-0.2163
October-December 1911-0.6048
October-December 19102.23124
October-December 19091.81118
October-December 1908-0.7443
October-December 19070.4186
October-December 1906-0.4456
October-December 1905-1.1830
October-December 1904-1.0239
October-December 19031.03109
October-December 19020.8999
October-December 1901-1.0538
October-December 19000.97103
October-December 18991.99122
October-December 1898-0.1064
October-December 18970.2878
October-December 18961.52114
October-December 1895-1.1631

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