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.

Nebraska, Climate Division 2

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	-0.89	0.19	-1.08	21st Driest	Driest since: 1991	1943
December 1999 1-Month	-0.89	0.19	-1.08	110th Wettest	Wettest since: 1998	2018
Nov–Dec 1999 2-Month	-1.58	0.13	-1.71	1st Driest	Driest to Date	1999
Nov–Dec 1999 2-Month	-1.58	0.13	-1.71	130th Wettest	Wettest since: 1998	1909
Oct–Dec 1999 3-Month	-1.68	0.25	-1.93	1st Driest	Driest to Date	1999
Oct–Dec 1999 3-Month	-1.68	0.25	-1.93	130th Wettest	Wettest since: 1998	1946
Sep–Dec 1999 4-Month	-0.84	0.24	-1.08	23rd Driest	Driest since: 1989	2012
Sep–Dec 1999 4-Month	-0.84	0.24	-1.08	108th Wettest	Wettest since: 1998	1946
Aug–Dec 1999 5-Month	-0.69	0.29	-0.98	25th Driest	Driest since: 1989	2012
Aug–Dec 1999 5-Month	-0.69	0.29	-0.98	106th Wettest	Wettest since: 1998	2019
Jul–Dec 1999 6-Month	-0.34	0.33	-0.67	43rd Driest	Driest since: 1990	2012
Jul–Dec 1999 6-Month	-0.34	0.33	-0.67	88th Wettest	Wettest since: 1998	2019
Jun–Dec 1999 7-Month	0.07	0.31	-0.24	54th Driest	Driest since: 1991	2012
Jun–Dec 1999 7-Month	0.07	0.31	-0.24	77th Wettest	Wettest since: 1998	1915
May–Dec 1999 8-Month	0.12	0.30	-0.18	60th Driest	Driest since: 1991	2012
May–Dec 1999 8-Month	0.12	0.30	-0.18	71st Wettest	Wettest since: 1998	2019
Apr–Dec 1999 9-Month	0.55	0.29	0.26	71st Driest	Driest since: 1991	1934
Apr–Dec 1999 9-Month	0.55	0.29	0.26	60th Wettest	Wettest since: 1998	1915
Mar–Dec 1999 10-Month	0.49	0.25	0.24	72nd Driest	Driest since: 1991	2012
	0.49	0.25	0.24	59th Wettest	Wettest since: 1998	2019
	Ties: 1972
Feb–Dec 1999 11-Month	0.51	0.23	0.28	74th Driest	Driest since: 1991	1934
Feb–Dec 1999 11-Month	0.51	0.23	0.28	57th Wettest	Wettest since: 1998	2019
Jan–Dec 1999 12-Month	0.47	0.22	0.25	70th Driest	Driest since: 1991	1934
	0.47	0.22	0.25	61st Wettest	Wettest since: 1998	1915
	Ties: 1988
Jul 1998–Dec 1999 18-Month	1.01	0.26	0.75	99th Driest	Driest since: 1997	1937
	1.01	0.26	0.75	31st Wettest	Wettest since: 1998	2019
	Ties: 1996
Jan 1998–Dec 1999 24-Month	0.99	0.22	0.77	101st Driest	Driest since: 1997	1956
	0.99	0.22	0.77	29th Wettest	Wettest since: 1998	2019
	Ties: 1945
Jan 1997–Dec 1999 36-Month	0.91	0.21	0.70	103rd Driest	Driest since: 1992	1956
	0.91	0.21	0.70	26th Wettest	Wettest since: 1998	2019
	Ties: 1906
Jan 1996–Dec 1999 48-Month	0.92	0.21	0.71	106th Driest	Driest since: 1993	1937
Jan 1996–Dec 1999 48-Month	0.92	0.21	0.71	22nd Wettest	Wettest since: 1998	2019
Jan 1995–Dec 1999 60-Month	1.09	0.20	0.89	115th Driest	Driest since: 1994	1937
Jan 1995–Dec 1999 60-Month	1.09	0.20	0.89	12th Wettest	Wettest since: 1998	2019

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

Nebraska, Climate Division 2

December 1999 Palmer Z-Index Rankings

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