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 1999 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
January 1999 1-Month	-1.07	0.13	-1.20	43rd Driest	Driest since: 1989	1907
January 1999 1-Month	-1.07	0.13	-1.20	89th Wettest	Wettest since: 1998	1991
Dec 1998–Jan 1999 2-Month	-1.57	0.03	-1.60	16th Driest	Driest since: 1989	1907
Dec 1998–Jan 1999 2-Month	-1.57	0.03	-1.60	115th Wettest	Wettest since: 1998	1991
Nov 1998–Jan 1999 3-Month	-1.08	-0.02	-1.06	33rd Driest	Driest since: 1989	1907
	-1.08	-0.02	-1.06	98th Wettest	Wettest since: 1998	1998
	Ties: 1916
Oct 1998–Jan 1999 4-Month	-1.05	0.03	-1.08	26th Driest	Driest since: 1989	2012
Oct 1998–Jan 1999 4-Month	-1.05	0.03	-1.08	105th Wettest	Wettest since: 1998	1919
Sep 1998–Jan 1999 5-Month	0.62	-0.01	0.63	97th Driest	Driest since: 1997	1907
Sep 1998–Jan 1999 5-Month	0.62	-0.01	0.63	34th Wettest	Wettest since: 1998	1978
Aug 1998–Jan 1999 6-Month	0.21	-0.03	0.24	85th Driest	Driest since: 1997	1925
Aug 1998–Jan 1999 6-Month	0.21	-0.03	0.24	46th Wettest	Wettest since: 1998	1978
Jul 1998–Jan 1999 7-Month	-0.21	-0.01	-0.20	51st Driest	Driest since: 1997	1925
	-0.21	-0.01	-0.20	80th Wettest	Wettest since: 1998	1978
	Ties: 1942, 1973
Jun 1998–Jan 1999 8-Month	-0.49	-0.01	-0.48	34th Driest	Driest since: 1996	1925
	-0.49	-0.01	-0.48	97th Wettest	Wettest since: 1998	1978
	Ties: 1902, 1908, 1973
May 1998–Jan 1999 9-Month	-0.80	0.00	-0.80	23rd Driest	Driest since: 1982	1907
May 1998–Jan 1999 9-Month	-0.80	0.00	-0.80	108th Wettest	Wettest since: 1998	1992
Apr 1998–Jan 1999 10-Month	-0.72	0.00	-0.72	25th Driest	Driest since: 1982	1907
Apr 1998–Jan 1999 10-Month	-0.72	0.00	-0.72	106th Wettest	Wettest since: 1998	1992
Mar 1998–Jan 1999 11-Month	-0.52	-0.01	-0.51	30th Driest	Driest since: 1987	1925
	-0.52	-0.01	-0.51	101st Wettest	Wettest since: 1998	1992
	Ties: 1961, 1970
Feb 1998–Jan 1999 12-Month	-0.46	-0.03	-0.43	32nd Driest	Driest since: 1997	1963
Feb 1998–Jan 1999 12-Month	-0.46	-0.03	-0.43	99th Wettest	Wettest since: 1998	1992
Aug 1997–Jan 1999 18-Month	-0.01	-0.03	0.02	69th Driest	Driest since: 1997	1905
	-0.01	-0.03	0.02	61st Wettest	Wettest since: 1998	1992
	Ties: 1912, 1936
Feb 1997–Jan 1999 24-Month	0.24	-0.03	0.27	93rd Driest	Driest since: 1998	2001
	0.24	-0.03	0.27	37th Wettest	Wettest since: 1994	1993
	Ties: 1929
Feb 1996–Jan 1999 36-Month	0.00	-0.03	0.03	77th Driest	Driest since: 1997	1905
Feb 1996–Jan 1999 36-Month	0.00	-0.03	0.03	52nd Wettest	Wettest since: 1998	1994
Feb 1995–Jan 1999 48-Month	-0.03	-0.03	0.00	70th Driest	Driest since: 1997	1905
Feb 1995–Jan 1999 48-Month	-0.03	-0.03	0.00	58th Wettest	Wettest since: 1998	1995
Feb 1994–Jan 1999 60-Month	-0.03	-0.03	0.00	72nd Driest	Driest since: 1991	1907
	-0.03	-0.03	0.00	55th Wettest	Wettest since: 1998	1993
	Ties: 1913, 1986

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 1999 Palmer Z-Index Rankings

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