Climate at a Glance | Divisional Rankings | National Centers for Environmental Information (NCEI)

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

January 1940 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
January 1940 1-Month	-0.22	0.13	-0.35	69th Driest	Driest since: 1939	1907
January 1940 1-Month	-0.22	0.13	-0.35	63rd Wettest	Wettest since: 1938	1991
Dec 1939–Jan 1940 2-Month	-0.92	0.03	-0.95	46th Driest	Driest since: 1939	1907
Dec 1939–Jan 1940 2-Month	-0.92	0.03	-0.95	85th Wettest	Wettest since: 1938	1991
Nov 1939–Jan 1940 3-Month	-0.35	-0.02	-0.33	64th Driest	Driest since: 1939	1907
Nov 1939–Jan 1940 3-Month	-0.35	-0.02	-0.33	67th Wettest	Wettest since: 1936	1998
Oct 1939–Jan 1940 4-Month	-0.64	0.03	-0.67	43rd Driest	Driest since: 1939	2012
Oct 1939–Jan 1940 4-Month	-0.64	0.03	-0.67	88th Wettest	Wettest since: 1938	1919
Sep 1939–Jan 1940 5-Month	-0.61	-0.01	-0.60	43rd Driest	Driest since: 1939	1907
Sep 1939–Jan 1940 5-Month	-0.61	-0.01	-0.60	88th Wettest	Wettest since: 1938	1978
Aug 1939–Jan 1940 6-Month	-0.40	-0.03	-0.37	45th Driest	Driest since: 1939	1925
Aug 1939–Jan 1940 6-Month	-0.40	-0.03	-0.37	86th Wettest	Wettest since: 1938	1978
Jul 1939–Jan 1940 7-Month	-0.16	-0.01	-0.15	57th Driest	Driest since: 1939	1925
Jul 1939–Jan 1940 7-Month	-0.16	-0.01	-0.15	74th Wettest	Wettest since: 1938	1978
Jun 1939–Jan 1940 8-Month	-0.06	-0.01	-0.05	59th Driest	Driest since: 1939	1925
Jun 1939–Jan 1940 8-Month	-0.06	-0.01	-0.05	72nd Wettest	Wettest since: 1938	1978
May 1939–Jan 1940 9-Month	0.38	0.00	0.38	95th Driest	Driest since: 1939	1907
May 1939–Jan 1940 9-Month	0.38	0.00	0.38	36th Wettest	Wettest since: 1938	1992
Apr 1939–Jan 1940 10-Month	0.22	0.00	0.22	85th Driest	Driest since: 1939	1907
Apr 1939–Jan 1940 10-Month	0.22	0.00	0.22	46th Wettest	Wettest since: 1938	1992
Mar 1939–Jan 1940 11-Month	-0.06	-0.01	-0.05	61st Driest	Driest since: 1939	1925
Mar 1939–Jan 1940 11-Month	-0.06	-0.01	-0.05	70th Wettest	Wettest since: 1938	1992
Feb 1939–Jan 1940 12-Month	-0.08	-0.03	-0.05	62nd Driest	Driest since: 1939	1963
Feb 1939–Jan 1940 12-Month	-0.08	-0.03	-0.05	69th Wettest	Wettest since: 1938	1992
Aug 1938–Jan 1940 18-Month	-0.42	-0.03	-0.39	31st Driest	Driest since: 1937	1905
Aug 1938–Jan 1940 18-Month	-0.42	-0.03	-0.39	99th Wettest	Wettest since: 1939	1992
Feb 1938–Jan 1940 24-Month	-0.55	-0.03	-0.52	21st Driest	Driest since: 1926	2001
Feb 1938–Jan 1940 24-Month	-0.55	-0.03	-0.52	109th Wettest	Wettest since: 1939	1993
Feb 1937–Jan 1940 36-Month	-0.23	-0.03	-0.20	42nd Driest	Driest since: 1939	1905
Feb 1937–Jan 1940 36-Month	-0.23	-0.03	-0.20	87th Wettest	Wettest since: 1938	1994
Feb 1936–Jan 1940 48-Month	-0.41	-0.03	-0.38	21st Driest	Driest since: 1937	1905
Feb 1936–Jan 1940 48-Month	-0.41	-0.03	-0.38	107th Wettest	Wettest since: 1939	1995
Feb 1935–Jan 1940 60-Month	-0.33	-0.03	-0.30	24th Driest	Driest since: 1926	1907
Feb 1935–Jan 1940 60-Month	-0.33	-0.03	-0.30	103rd Wettest	Wettest since: 1939	1993

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2025, retrieved on April 1, 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

January 1940 Palmer Z-Index Rankings

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