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.

Texas, Climate Division 7

December 1940 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
December 1940 1-Month	3.75	0.23	3.52	125th Driest	Driest since: 1939	1970
December 1940 1-Month	3.75	0.23	3.52	6th Wettest	Wettest since: 1923	1991
Nov–Dec 1940 2-Month	4.35	0.16	4.19	130th Driest	Driest since: 1939	2012
Nov–Dec 1940 2-Month	4.35	0.16	4.19	1st Wettest	Wettest to Date	1940
Oct–Dec 1940 3-Month	3.13	0.16	2.97	125th Driest	Driest since: 1939	1950
Oct–Dec 1940 3-Month	3.13	0.16	2.97	6th Wettest	Wettest since: 1913	1960
Sep–Dec 1940 4-Month	1.91	0.03	1.88	119th Driest	Driest since: 1939	2024
Sep–Dec 1940 4-Month	1.91	0.03	1.88	12th Wettest	Wettest since: 1923	1913
Aug–Dec 1940 5-Month	1.44	-0.02	1.46	114th Driest	Driest since: 1939	2024
Aug–Dec 1940 5-Month	1.44	-0.02	1.46	17th Wettest	Wettest since: 1923	1998
Jul–Dec 1940 6-Month	1.35	-0.03	1.38	116th Driest	Driest since: 1939	1917
Jul–Dec 1940 6-Month	1.35	-0.03	1.38	15th Wettest	Wettest since: 1936	1919
Jun–Dec 1940 7-Month	1.68	-0.05	1.73	122nd Driest	Driest since: 1939	1917
Jun–Dec 1940 7-Month	1.68	-0.05	1.73	9th Wettest	Wettest since: 1919	1919
May–Dec 1940 8-Month	1.32	-0.04	1.36	117th Driest	Driest since: 1939	1917
May–Dec 1940 8-Month	1.32	-0.04	1.36	14th Wettest	Wettest since: 1936	1919
Apr–Dec 1940 9-Month	1.05	-0.03	1.08	111th Driest	Driest since: 1939	2011
Apr–Dec 1940 9-Month	1.05	-0.03	1.08	20th Wettest	Wettest since: 1936	1919
Mar–Dec 1940 10-Month	0.86	-0.01	0.87	106th Driest	Driest since: 1939	2011
Mar–Dec 1940 10-Month	0.86	-0.01	0.87	25th Wettest	Wettest since: 1936	1919
Feb–Dec 1940 11-Month	0.75	-0.02	0.77	104th Driest	Driest since: 1939	2011
Feb–Dec 1940 11-Month	0.75	-0.02	0.77	27th Wettest	Wettest since: 1936	1919
Jan–Dec 1940 12-Month	0.56	-0.03	0.59	92nd Driest	Driest since: 1939	1917
Jan–Dec 1940 12-Month	0.56	-0.03	0.59	39th Wettest	Wettest since: 1936	1919
Jul 1939–Dec 1940 18-Month	-0.02	-0.03	0.01	63rd Driest	Driest since: 1939	1956
Jul 1939–Dec 1940 18-Month	-0.02	-0.03	0.01	67th Wettest	Wettest since: 1937	1919
Jan 1939–Dec 1940 24-Month	-0.41	-0.03	-0.38	42nd Driest	Driest since: 1939	1917
	-0.41	-0.03	-0.38	88th Wettest	Wettest since: 1938	1992
	Ties: 1938
Jan 1938–Dec 1940 36-Month	-0.38	-0.02	-0.36	37th Driest	Driest since: 1939	1956
Jan 1938–Dec 1940 36-Month	-0.38	-0.02	-0.36	92nd Wettest	Wettest since: 1938	1993
Jan 1937–Dec 1940 48-Month	-0.41	-0.03	-0.38	34th Driest	Driest since: 1928	1956
Jan 1937–Dec 1940 48-Month	-0.41	-0.03	-0.38	94th Wettest	Wettest since: 1939	1976
Jan 1936–Dec 1940 60-Month	-0.11	-0.03	-0.08	54th Driest	Driest since: 1929	1956
Jan 1936–Dec 1940 60-Month	-0.11	-0.03	-0.08	73rd Wettest	Wettest since: 1939	1976

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2025, retrieved on March 31, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings

Climate at a Glance Divisional Rankings

Divisional Rankings

Texas, Climate Division 7

December 1940 Palmer Z-Index Rankings

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