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
Oregon, Climate Division 1 Palmer Z-Index
October-December
Period
Z-Index
Rank
(out of 130)
October-December 20240.3993
October-December 2023-0.2660
October-December 2022-0.4547
October-December 20210.3088
October-December 2020-0.6639
October-December 2019-1.884
October-December 2018-0.9624
October-December 2017-0.3951
October-December 20162.78130
October-December 20151.34118
October-December 20140.3289
October-December 2013-2.811
October-December 20121.56122
October-December 2011-0.9525
October-December 20100.2687
October-December 2009-0.5944
October-December 2008-0.4449
October-December 20070.0076
October-December 20061.06112
October-December 20050.3592
October-December 2004-1.1018
October-December 20030.0076
October-December 2002-0.4547
October-December 20010.3592
October-December 2000-1.588
October-December 19990.0678
October-December 19981.62123
October-December 1997-0.1664
October-December 19962.30129
October-December 19950.53100
October-December 19940.67103
October-December 1993-1.2615
October-December 1992-0.3554
October-December 1991-1.0121
October-December 1990-0.4746
October-December 1989-1.687
October-December 1988-0.2956
October-December 1987-0.6838
October-December 1986-1.2216
October-December 1985-1.0320
October-December 19841.03111
October-December 19830.3592
October-December 19820.5197
October-December 19811.68124
October-December 1980-0.0871
October-December 19790.0477
October-December 1978-2.233
October-December 19770.4294
October-December 1976-2.352
October-December 19751.07113
October-December 1974-0.3951
October-December 19732.18127
October-December 1972-0.6141
October-December 19710.4596
October-December 19700.74104
October-December 1969-0.4449
October-December 19681.41120
October-December 1967-0.3653
October-December 19660.1483
October-December 19650.1081
October-December 19640.95110
October-December 1963-0.2956
October-December 1962-0.0274
October-December 19610.1984
October-December 1960-0.0772
October-December 1959-1.826
October-December 1958-0.2758
October-December 1957-0.1168
October-December 1956-0.2758
October-December 19552.14126
October-December 1954-0.6540
October-December 19530.2285
October-December 1952-0.9030
October-December 19511.12115
October-December 19502.29128
October-December 1949-0.6042
October-December 1948-0.0673
October-December 19470.82107
October-December 19460.53100
October-December 19450.80105
October-December 1944-1.3113
October-December 1943-0.7635
October-December 19421.71125
October-December 1941-0.0871
October-December 1940-0.3455
October-December 1939-0.7036
October-December 1938-0.9326
October-December 19371.16116
October-December 1936-1.5411
October-December 1935-1.2117
October-December 19341.38119
October-December 1933-0.4845
October-December 19320.2486
October-December 19310.57102
October-December 1930-1.855
October-December 1929-0.7036
October-December 1928-0.6042
October-December 1927-0.7834
October-December 19260.54101
October-December 1925-1.579
October-December 19241.29117
October-December 1923-1.2814
October-December 1922-0.2561
October-December 1921-0.1664
October-December 19200.81106
October-December 1919-0.8032
October-December 1918-0.9723
October-December 1917-0.2162
October-December 1916-1.0022
October-December 19150.53100
October-December 1914-0.9127
October-December 1913-0.9127
October-December 1912-0.1168
October-December 1911-1.5312
October-December 19100.1382
October-December 19090.93109
October-December 1908-0.8032
October-December 1907-0.0871
October-December 1906-0.1763
October-December 1905-0.8131
October-December 19040.1081
October-December 1903-0.1366
October-December 19021.08114
October-December 1901-1.5610
October-December 19000.0879
October-December 18990.85108
October-December 1898-1.0919
October-December 18970.4495
October-December 18961.46121
October-December 1895-0.9127

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