Please note, Degree Days are not available for Great Plains, Souther Plains and Gulf Coast, Rockies and Westward, River Basins, or Agricultural Belts. 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
West Palmer Drought Severity Index (PDSI)
September
Period
PDSI
Rank
(out of 128)
Anomaly
1901-2000 Mean: 0.12
September 2022-5.445-5.56
September 2021-7.571-7.69
September 2020-3.9212-4.04
September 2019-0.1472-0.26
September 2018-4.559-4.67
September 2017-0.6952-0.81
September 2016-2.5226-2.64
September 2015-5.734-5.85
September 2014-6.223-6.34
September 2013-3.5117-3.63
September 2012-3.6916-3.81
September 2011-0.2669-0.38
September 20100.74910.62
September 2009-3.3222-3.44
September 2008-4.3610-4.48
September 2007-5.026-5.14
September 2006-1.6736-1.79
September 20053.411213.29
September 2004-2.8123-2.93
September 2003-0.4858-0.60
September 2002-3.7214-3.84
September 2001-3.9911-4.11
September 2000-1.8432-1.96
September 1999-0.2966-0.41
September 19986.981286.86
September 19970.60880.48
September 19961.18991.06
September 19955.221265.10
September 1994-3.7214-3.84
September 1993-0.4063-0.52
September 1992-3.4918-3.61
September 1991-1.6037-1.72
September 1990-3.7713-3.89
September 1989-1.0946-1.21
September 1988-1.3144-1.43
September 1987-3.4719-3.59
September 19860.82930.70
September 19850.65900.53
September 19843.071192.95
September 19836.971276.85
September 19824.371244.25
September 1981-2.7125-2.83
September 1980-0.0179-0.13
September 19790.13830.01
September 19782.931182.81
September 1977-5.017-5.13
September 1976-2.2229-2.34
September 19751.391011.27
September 1974-1.5738-1.69
September 1973-1.5738-1.69
September 19720.43850.31
September 19712.561082.44
September 1970-0.4759-0.59
September 1969-0.6054-0.72
September 19680.0482-0.08
September 19673.371203.25
September 1966-2.4727-2.59
September 19652.841152.72
September 1964-0.4461-0.56
September 19632.931182.81
September 1962-0.9648-1.08
September 1961-1.8035-1.92
September 1960-3.4520-3.57
September 1959-3.4021-3.52
September 19580.0280-0.10
September 19571.441021.32
September 19560.0381-0.09
September 1955-0.0876-0.20
September 1954-1.4741-1.59
September 1953-0.5057-0.62
September 19522.421072.30
September 1951-0.6153-0.73
September 19500.16840.04
September 1949-1.0946-1.21
September 1948-0.1175-0.23
September 1947-2.1531-2.27
September 1946-1.2045-1.32
September 19451.871041.75
September 1944-0.5156-0.63
September 1943-0.4759-0.59
September 19422.781132.66
September 19414.351234.23
September 19400.44860.32
September 1939-1.5440-1.66
September 19382.741122.62
September 1937-0.8549-0.97
September 1936-0.2669-0.38
September 1935-0.5255-0.64
September 1934-4.698-4.81
September 1933-0.7151-0.83
September 1932-0.4461-0.56
September 1931-0.1273-0.24
September 19301.06960.94
September 1929-1.8432-1.96
September 1928-2.2828-2.40
September 19271.16981.04
September 1926-2.7224-2.84
September 19252.801142.68
September 1924-6.302-6.42
September 19232.621102.50
September 19220.92940.80
September 1921-0.1175-0.23
September 19200.99950.87
September 1919-1.3843-1.50
September 19181.11970.99
September 1917-0.2867-0.40
September 19160.77920.65
September 19152.621102.50
September 1914-0.2470-0.36
September 19132.121062.00
September 19121.901051.78
September 1911-0.1971-0.31
September 1910-2.2030-2.32
September 19090.64890.52
September 19081.391011.27
September 19073.951223.83
September 19064.501254.38
September 1905-0.0577-0.17
September 19042.661112.54
September 1903-0.8450-0.96
September 1902-0.4063-0.52
September 19011.731031.61
September 1900-0.3165-0.43
September 18990.58870.46
September 1898-1.8234-1.94
September 1897-1.4741-1.59
September 18962.901162.78
September 1895-0.0478-0.16

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