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.

North Dakota, Climate Division 7

December 1999 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
December 1999 1-Month	-0.40	0.14	-0.54	41st Driest	Driest since: 1997	1952
December 1999 1-Month	-0.40	0.14	-0.54	90th Wettest	Wettest since: 1998	2013
Nov–Dec 1999 2-Month	-1.05	0.10	-1.15	12th Driest	Driest since: 1990	1954
Nov–Dec 1999 2-Month	-1.05	0.10	-1.15	119th Wettest	Wettest since: 1998	1896
Oct–Dec 1999 3-Month	-0.99	0.13	-1.12	13th Driest	Driest since: 1987	1963
Oct–Dec 1999 3-Month	-0.99	0.13	-1.12	118th Wettest	Wettest since: 1998	1982
Sep–Dec 1999 4-Month	-0.33	0.11	-0.44	50th Driest	Driest since: 1997	1952
	-0.33	0.11	-0.44	81st Wettest	Wettest since: 1998	2013
	Ties: 1913
Aug–Dec 1999 5-Month	0.52	0.11	0.41	91st Driest	Driest since: 1997	1934
Aug–Dec 1999 5-Month	0.52	0.11	0.41	40th Wettest	Wettest since: 1998	2013
Jul–Dec 1999 6-Month	0.45	0.13	0.32	84th Driest	Driest since: 1997	1936
Jul–Dec 1999 6-Month	0.45	0.13	0.32	47th Wettest	Wettest since: 1998	2013
Jun–Dec 1999 7-Month	0.36	0.12	0.24	77th Driest	Driest since: 1997	1936
	0.36	0.12	0.24	54th Wettest	Wettest since: 1998	1915
	Ties: 1969
May–Dec 1999 8-Month	0.73	0.12	0.61	90th Driest	Driest since: 1997	1936
May–Dec 1999 8-Month	0.73	0.12	0.61	41st Wettest	Wettest since: 1998	2013
Apr–Dec 1999 9-Month	0.71	0.09	0.62	94th Driest	Driest since: 1998	1936
Apr–Dec 1999 9-Month	0.71	0.09	0.62	37th Wettest	Wettest since: 1995	2013
Mar–Dec 1999 10-Month	0.52	0.08	0.44	82nd Driest	Driest since: 1997	1936
	0.52	0.08	0.44	49th Wettest	Wettest since: 1998	1982
	Ties: 1994
Feb–Dec 1999 11-Month	0.57	0.08	0.49	88th Driest	Driest since: 1997	1936
Feb–Dec 1999 11-Month	0.57	0.08	0.49	43rd Wettest	Wettest since: 1998	1982
Jan–Dec 1999 12-Month	0.63	0.09	0.54	92nd Driest	Driest since: 1997	1934
	0.63	0.09	0.54	39th Wettest	Wettest since: 1998	1982
	Ties: 1912
Jul 1998–Dec 1999 18-Month	0.92	0.10	0.82	107th Driest	Driest since: 1998	1934
	0.92	0.10	0.82	23rd Wettest	Wettest since: 1996	2014
	Ties: 1996
Jan 1998–Dec 1999 24-Month	0.70	0.09	0.61	100th Driest	Driest since: 1998	1937
	0.70	0.09	0.61	30th Wettest	Wettest since: 1996	2014
	Ties: 1923
Jan 1997–Dec 1999 36-Month	0.54	0.09	0.45	97th Driest	Driest since: 1994	1936
Jan 1997–Dec 1999 36-Month	0.54	0.09	0.45	32nd Wettest	Wettest since: 1998	1972
Jan 1996–Dec 1999 48-Month	0.57	0.08	0.49	101st Driest	Driest since: 1995	1937
	0.57	0.08	0.49	27th Wettest	Wettest since: 1998	1973
	Ties: 1946
Jan 1995–Dec 1999 60-Month	0.72	0.08	0.64	112th Driest	Driest since: 1998	1938
Jan 1995–Dec 1999 60-Month	0.72	0.08	0.64	15th Wettest	Wettest since: 1997	2014

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2025, retrieved on March 23, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings

Climate at a Glance Divisional Rankings

Divisional Rankings

North Dakota, Climate Division 7

December 1999 Palmer Z-Index Rankings

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