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Divisional Rankings

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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.

Louisiana, Climate Division 9

December 1964 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
December 1964 1-Month	-1.72	-0.10	-1.62	22nd Driest	Driest since: 1962	2021
December 1964 1-Month	-1.72	-0.10	-1.62	109th Wettest	Wettest since: 1963	2009
Nov–Dec 1964 2-Month	-1.00	-0.07	-0.93	43rd Driest	Driest since: 1962	1906
Nov–Dec 1964 2-Month	-1.00	-0.07	-0.93	88th Wettest	Wettest since: 1963	1947
Oct–Dec 1964 3-Month	0.06	0.01	0.05	76th Driest	Driest since: 1962	2011
Oct–Dec 1964 3-Month	0.06	0.01	0.05	55th Wettest	Wettest since: 1963	2009
Sep–Dec 1964 4-Month	-0.11	-0.04	-0.07	68th Driest	Driest since: 1962	1924
Sep–Dec 1964 4-Month	-0.11	-0.04	-0.07	63rd Wettest	Wettest since: 1963	2002
Aug–Dec 1964 5-Month	-0.18	-0.05	-0.13	57th Driest	Driest since: 1962	1924
Aug–Dec 1964 5-Month	-0.18	-0.05	-0.13	74th Wettest	Wettest since: 1963	1977
Jul–Dec 1964 6-Month	0.28	-0.04	0.32	90th Driest	Driest since: 1963	1924
	0.28	-0.04	0.32	41st Wettest	Wettest since: 1961	1898
	Ties: 1926
Jun–Dec 1964 7-Month	0.11	-0.04	0.15	70th Driest	Driest since: 1963	1924
Jun–Dec 1964 7-Month	0.11	-0.04	0.15	61st Wettest	Wettest since: 1961	1898
May–Dec 1964 8-Month	-0.09	-0.04	-0.05	53rd Driest	Driest since: 1963	1924
May–Dec 1964 8-Month	-0.09	-0.04	-0.05	78th Wettest	Wettest since: 1961	1942, 1975
Apr–Dec 1964 9-Month	0.02	-0.04	0.06	62nd Driest	Driest since: 1963	1924
Apr–Dec 1964 9-Month	0.02	-0.04	0.06	69th Wettest	Wettest since: 1961	2021
Mar–Dec 1964 10-Month	0.08	-0.05	0.13	72nd Driest	Driest since: 1963	1924
Mar–Dec 1964 10-Month	0.08	-0.05	0.13	59th Wettest	Wettest since: 1961	2021
Feb–Dec 1964 11-Month	0.19	-0.07	0.26	88th Driest	Driest since: 1963	2023
Feb–Dec 1964 11-Month	0.19	-0.07	0.26	43rd Wettest	Wettest since: 1961	2021
Jan–Dec 1964 12-Month	0.42	-0.05	0.47	100th Driest	Driest since: 1963	2023
Jan–Dec 1964 12-Month	0.42	-0.05	0.47	31st Wettest	Wettest since: 1961	1991
Jul 1963–Dec 1964 18-Month	0.19	-0.04	0.23	89th Driest	Driest since: 1963	1904
	0.19	-0.04	0.23	41st Wettest	Wettest since: 1961	1946
	Ties: 1931
Jan 1963–Dec 1964 24-Month	-0.14	-0.04	-0.10	63rd Driest	Driest since: 1963	2000
Jan 1963–Dec 1964 24-Month	-0.14	-0.04	-0.10	67th Wettest	Wettest since: 1961	1992
Jan 1962–Dec 1964 36-Month	-0.64	-0.04	-0.60	9th Driest	Driest since: 1952	1904
Jan 1962–Dec 1964 36-Month	-0.64	-0.04	-0.60	120th Wettest	Wettest since: 1963	1993
Jan 1961–Dec 1964 48-Month	-0.19	-0.03	-0.16	48th Driest	Driest since: 1963	1904
	-0.19	-0.03	-0.16	80th Wettest	Wettest since: 1962	1994
	Ties: 1911
Jan 1960–Dec 1964 60-Month	-0.27	-0.03	-0.24	35th Driest	Driest since: 1955	1906
	-0.27	-0.03	-0.24	92nd Wettest	Wettest since: 1963	1995
	Ties: 1938

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2025, retrieved on March 28, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings

Climate at a Glance Divisional Rankings

Divisional Rankings

Louisiana, Climate Division 9

December 1964 Palmer Z-Index Rankings

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