Statewide Rankings

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Please note, Degree Days and Palmer Indices are not available for Alaska. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Wyoming

Precipitation Rankings, December 1997

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Record Driest
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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Wettest/Driest Since	Record
December 1997 1-Month	0.89" (22.61mm)	1.01" (25.65mm)	-0.12" (-3.04mm)	56th Driest	Driest since: 1994	1986
	0.89" (22.61mm)	1.01" (25.65mm)	-0.12" (-3.04mm)	73rd Wettest	Wettest since: 1996	1964, 1996
	Ties: 1989
Nov–Dec 1997 2-Month	1.44" (36.58mm)	2.05" (52.07mm)	-0.61" (-15.49mm)	24th Driest	Driest since: 1979	1914
Nov–Dec 1997 2-Month	1.44" (36.58mm)	2.05" (52.07mm)	-0.61" (-15.49mm)	105th Wettest	Wettest since: 1996	1983
Oct–Dec 1997 3-Month	2.82" (71.63mm)	3.24" (82.30mm)	-0.42" (-10.67mm)	35th Driest	Driest since: 1989	1976
Oct–Dec 1997 3-Month	2.82" (71.63mm)	3.24" (82.30mm)	-0.42" (-10.67mm)	94th Wettest	Wettest since: 1996	1942
Sep–Dec 1997 4-Month	4.54" (115.32mm)	4.48" (113.79mm)	0.06" (1.53mm)	70th Driest	Driest since: 1993	1952
	4.54" (115.32mm)	4.48" (113.79mm)	0.06" (1.53mm)	59th Wettest	Wettest since: 1996	2013
	Ties: 2011
Aug–Dec 1997 5-Month	6.29" (159.77mm)	5.55" (140.97mm)	0.74" (18.80mm)	95th Driest	Driest since: 1995	1904
	6.29" (159.77mm)	5.55" (140.97mm)	0.74" (18.80mm)	34th Wettest	Wettest since: 1996	1923
	Ties: 2007
Jul–Dec 1997 6-Month	8.52" (216.41mm)	6.83" (173.48mm)	1.69" (42.93mm)	115th Driest	Driest since: 1996	1939
Jul–Dec 1997 6-Month	8.52" (216.41mm)	6.83" (173.48mm)	1.69" (42.93mm)	14th Wettest	Wettest since: 1983	1923
Jun–Dec 1997 7-Month	10.66" (270.76mm)	8.67" (220.22mm)	1.99" (50.54mm)	115th Driest	Driest since: 1996	1935
Jun–Dec 1997 7-Month	10.66" (270.76mm)	8.67" (220.22mm)	1.99" (50.54mm)	14th Wettest	Wettest since: 1983	1923
May–Dec 1997 8-Month	12.70" (322.58mm)	10.88" (276.35mm)	1.82" (46.23mm)	108th Driest	Driest since: 1996	1900
May–Dec 1997 8-Month	12.70" (322.58mm)	10.88" (276.35mm)	1.82" (46.23mm)	21st Wettest	Wettest since: 1995	1923
Apr–Dec 1997 9-Month	14.64" (371.86mm)	12.66" (321.56mm)	1.98" (50.30mm)	105th Driest	Driest since: 1996	1954
Apr–Dec 1997 9-Month	14.64" (371.86mm)	12.66" (321.56mm)	1.98" (50.30mm)	24th Wettest	Wettest since: 1995	1941
Mar–Dec 1997 10-Month	15.53" (394.46mm)	13.91" (353.31mm)	1.62" (41.15mm)	99th Driest	Driest since: 1996	2012
Mar–Dec 1997 10-Month	15.53" (394.46mm)	13.91" (353.31mm)	1.62" (41.15mm)	30th Wettest	Wettest since: 1995	1941
Feb–Dec 1997 11-Month	16.38" (416.05mm)	14.88" (377.95mm)	1.50" (38.10mm)	96th Driest	Driest since: 1996	2012
	16.38" (416.05mm)	14.88" (377.95mm)	1.50" (38.10mm)	33rd Wettest	Wettest since: 1995	1941
	Ties: 1899
Jan–Dec 1997 12-Month	17.98" (456.69mm)	15.94" (404.88mm)	2.04" (51.81mm)	101st Driest	Driest since: 1996	2012
Jan–Dec 1997 12-Month	17.98" (456.69mm)	15.94" (404.88mm)	2.04" (51.81mm)	28th Wettest	Wettest since: 1995	1927
Jul 1996–Dec 1997 18-Month	25.82" (655.83mm)	22.77" (578.36mm)	3.05" (77.47mm)	112th Driest	Driest since: 1996	1934
Jul 1996–Dec 1997 18-Month	25.82" (655.83mm)	22.77" (578.36mm)	3.05" (77.47mm)	16th Wettest	Wettest since: 1995	1927
Jan 1996–Dec 1997 24-Month	35.28" (896.11mm)	31.87" (809.50mm)	3.41" (86.61mm)	107th Driest	Driest since: 1995	2002
Jan 1996–Dec 1997 24-Month	35.28" (896.11mm)	31.87" (809.50mm)	3.41" (86.61mm)	21st Wettest	Wettest since: 1996	1983
Jan 1995–Dec 1997 36-Month	55.56" (1,411.22mm)	47.82" (1,214.63mm)	7.74" (196.59mm)	124th Driest	Driest since: 1996	2002
Jan 1995–Dec 1997 36-Month	55.56" (1,411.22mm)	47.82" (1,214.63mm)	7.74" (196.59mm)	3rd Wettest	Wettest since: 1947	1947
Jan 1994–Dec 1997 48-Month	69.58" (1,767.33mm)	63.72" (1,618.49mm)	5.86" (148.84mm)	107th Driest	Driest since: 1995	2003
Jan 1994–Dec 1997 48-Month	69.58" (1,767.33mm)	63.72" (1,618.49mm)	5.86" (148.84mm)	19th Wettest	Wettest since: 1996	1998
Jan 1993–Dec 1997 60-Month	88.08" (2,237.23mm)	79.58" (2,021.33mm)	8.50" (215.90mm)	115th Driest	Driest since: 1996	1935
Jan 1993–Dec 1997 60-Month	88.08" (2,237.23mm)	79.58" (2,021.33mm)	8.50" (215.90mm)	10th Wettest	Wettest since: 1949	1999

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published May 2023, retrieved on June 8, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings