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
Montana, Climate Division 7 Palmer Z-IndexOctober-December18952024190519151925193519451955196519751985199520052015-2.004.00-1.000.001.002.003.00-2.004.00-1.000.001.002.003.00ZingChart
Montana, Climate Division 7 Palmer Z-Index
October-December
Period
Z-Index
Rank
(out of 130)
October-December 2024-0.9916
October-December 2023-0.0367
October-December 20220.4491
October-December 20210.2783
October-December 2020-0.1855
October-December 20191.21118
October-December 20180.93107
October-December 2017-0.4137
October-December 2016-0.3149
October-December 2015-0.4137
October-December 2014-0.1953
October-December 20132.26127
October-December 20120.0572
October-December 2011-0.3544
October-December 20100.0774
October-December 20090.95108
October-December 20081.38121
October-December 2007-0.9118
October-December 2006-0.0168
October-December 20051.85125
October-December 2004-0.3446
October-December 2003-0.0862
October-December 2002-1.1212
October-December 2001-1.486
October-December 20000.5695
October-December 1999-1.0015
October-December 19982.32128
October-December 1997-0.3939
October-December 19961.08110
October-December 19950.74102
October-December 19941.44122
October-December 19930.4592
October-December 19920.2279
October-December 1991-0.3841
October-December 1990-0.9118
October-December 19891.13114
October-December 1988-0.7225
October-December 1987-1.561
October-December 19860.4290
October-December 19850.6096
October-December 19840.0774
October-December 1983-0.0763
October-December 19821.91126
October-December 1981-0.1756
October-December 19800.3387
October-December 1979-1.1411
October-December 19781.11113
October-December 19771.37120
October-December 1976-0.3347
October-December 19751.45123
October-December 19740.0070
October-December 19730.2382
October-December 19720.2382
October-December 19713.97130
October-December 19700.5294
October-December 19690.3387
October-December 19680.70101
October-December 1967-0.0565
October-December 1966-0.2151
October-December 1965-1.458
October-December 19640.2382
October-December 1963-1.503
October-December 1962-0.3347
October-December 1961-0.1557
October-December 1960-1.0613
October-December 1959-0.0664
October-December 19581.18115
October-December 1957-0.1159
October-December 1956-0.3939
October-December 1955-0.1458
October-December 1954-1.532
October-December 1953-0.6426
October-December 1952-1.477
October-December 19510.6197
October-December 1950-0.5929
October-December 19490.1376
October-December 1948-0.3841
October-December 1947-0.7822
October-December 19462.73129
October-December 1945-0.5133
October-December 1944-0.4635
October-December 19430.1677
October-December 19420.0070
October-December 19411.10111
October-December 19400.69100
October-December 1939-1.503
October-December 1938-0.7424
October-December 1937-0.2550
October-December 1936-0.6128
October-December 1935-0.3544
October-December 1934-1.495
October-December 1933-0.1953
October-December 19321.20117
October-December 1931-0.5531
October-December 1930-0.0961
October-December 19290.2984
October-December 1928-0.2151
October-December 19271.23119
October-December 19260.3085
October-December 19250.4189
October-December 19240.88106
October-December 19231.20117
October-December 19220.6498
October-December 1921-0.4834
October-December 1920-0.5929
October-December 19191.57124
October-December 1918-0.4436
October-December 1917-0.6227
October-December 19160.6799
October-December 19150.3588
October-December 1914-0.8620
October-December 1913-0.1060
October-December 19120.76103
October-December 19110.5093
October-December 1910-0.8421
October-December 1909-0.3743
October-December 19080.83104
October-December 1907-1.229
October-December 19060.2178
October-December 1905-0.0367
October-December 1904-1.2010
October-December 1903-0.5232
October-December 1902-0.9217
October-December 1901-0.7523
October-December 1900-1.0314
October-December 18990.0271
October-December 18981.11113
October-December 18970.1075
October-December 18960.87105
October-December 18951.05109

Citing This Page