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, September 1997

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Wettest/Driest Since	Record
September 1997 1-Month	1.72" (43.69mm)	1.24" (31.50mm)	0.48" (12.19mm)	102nd Driest	Driest since: 1996	1979
September 1997 1-Month	1.72" (43.69mm)	1.24" (31.50mm)	0.48" (12.19mm)	27th Wettest	Wettest since: 1995	1923
Aug–Sep 1997 2-Month	3.47" (88.14mm)	2.31" (58.67mm)	1.16" (29.47mm)	115th Driest	Driest since: 1996	2012
Aug–Sep 1997 2-Month	3.47" (88.14mm)	2.31" (58.67mm)	1.16" (29.47mm)	14th Wettest	Wettest since: 1982	1923
Jul–Sep 1997 3-Month	5.70" (144.78mm)	3.59" (91.19mm)	2.11" (53.59mm)	123rd Driest	Driest since: 1996	1964
Jul–Sep 1997 3-Month	5.70" (144.78mm)	3.59" (91.19mm)	2.11" (53.59mm)	6th Wettest	Wettest since: 1982	1923
Jun–Sep 1997 4-Month	7.84" (199.14mm)	5.43" (137.92mm)	2.41" (61.22mm)	123rd Driest	Driest since: 1996	2012
Jun–Sep 1997 4-Month	7.84" (199.14mm)	5.43" (137.92mm)	2.41" (61.22mm)	6th Wettest	Wettest since: 1982	1923
May–Sep 1997 5-Month	9.88" (250.95mm)	7.64" (194.06mm)	2.24" (56.89mm)	117th Driest	Driest since: 1996	1919
	9.88" (250.95mm)	7.64" (194.06mm)	2.24" (56.89mm)	12th Wettest	Wettest since: 1995	1915
	Ties: 1941
Apr–Sep 1997 6-Month	11.82" (300.23mm)	9.42" (239.27mm)	2.40" (60.96mm)	115th Driest	Driest since: 1996	2012
Apr–Sep 1997 6-Month	11.82" (300.23mm)	9.42" (239.27mm)	2.40" (60.96mm)	14th Wettest	Wettest since: 1995	1941
Mar–Sep 1997 7-Month	12.71" (322.83mm)	10.67" (271.02mm)	2.04" (51.81mm)	109th Driest	Driest since: 1996	2012
Mar–Sep 1997 7-Month	12.71" (322.83mm)	10.67" (271.02mm)	2.04" (51.81mm)	20th Wettest	Wettest since: 1995	1941
Feb–Sep 1997 8-Month	13.56" (344.42mm)	11.63" (295.40mm)	1.93" (49.02mm)	107th Driest	Driest since: 1996	2012
Feb–Sep 1997 8-Month	13.56" (344.42mm)	11.63" (295.40mm)	1.93" (49.02mm)	22nd Wettest	Wettest since: 1995	1945
Jan–Sep 1997 9-Month	15.16" (385.06mm)	12.70" (322.58mm)	2.46" (62.48mm)	113th Driest	Driest since: 1996	1919
Jan–Sep 1997 9-Month	15.16" (385.06mm)	12.70" (322.58mm)	2.46" (62.48mm)	16th Wettest	Wettest since: 1995	1915, 1945
Dec 1996–Sep 1997 10-Month	17.45" (443.23mm)	13.71" (348.23mm)	3.74" (95.00mm)	125th Driest	Driest since: 1996	1919
Dec 1996–Sep 1997 10-Month	17.45" (443.23mm)	13.71" (348.23mm)	3.74" (95.00mm)	3rd Wettest	Wettest since: 1945	1923
Nov 1996–Sep 1997 11-Month	18.83" (478.28mm)	14.74" (374.40mm)	4.09" (103.88mm)	125th Driest	Driest since: 1996	1919
Nov 1996–Sep 1997 11-Month	18.83" (478.28mm)	14.74" (374.40mm)	4.09" (103.88mm)	3rd Wettest	Wettest since: 1945	1923
Oct 1996–Sep 1997 12-Month	20.26" (514.60mm)	15.94" (404.88mm)	4.32" (109.72mm)	126th Driest	Driest since: 1996	1919
Oct 1996–Sep 1997 12-Month	20.26" (514.60mm)	15.94" (404.88mm)	4.32" (109.72mm)	2nd Wettest	Wettest since: 1995	1995
Apr 1996–Sep 1997 18-Month	28.64" (727.46mm)	25.35" (643.89mm)	3.29" (83.57mm)	109th Driest	Driest since: 1995	2021
Apr 1996–Sep 1997 18-Month	28.64" (727.46mm)	25.35" (643.89mm)	3.29" (83.57mm)	19th Wettest	Wettest since: 1996	1945
Oct 1995–Sep 1997 24-Month	36.35" (923.29mm)	31.88" (809.75mm)	4.47" (113.54mm)	119th Driest	Driest since: 1995	2002
Oct 1995–Sep 1997 24-Month	36.35" (923.29mm)	31.88" (809.75mm)	4.47" (113.54mm)	8th Wettest	Wettest since: 1996	1998
Oct 1994–Sep 1997 36-Month	57.70" (1,465.58mm)	47.81" (1,214.37mm)	9.89" (251.21mm)	125th Driest	Driest since: 1996	2002
Oct 1994–Sep 1997 36-Month	57.70" (1,465.58mm)	47.81" (1,214.37mm)	9.89" (251.21mm)	1st Wettest	Wettest to Date	1997
Oct 1993–Sep 1997 48-Month	70.00" (1,778.00mm)	63.72" (1,618.49mm)	6.28" (159.51mm)	111th Driest	Driest since: 1996	2003
Oct 1993–Sep 1997 48-Month	70.00" (1,778.00mm)	63.72" (1,618.49mm)	6.28" (159.51mm)	14th Wettest	Wettest since: 1948	1998
Oct 1992–Sep 1997 60-Month	88.46" (2,246.88mm)	79.56" (2,020.82mm)	8.90" (226.06mm)	118th Driest	Driest since: 1996	2004
Oct 1992–Sep 1997 60-Month	88.46" (2,246.88mm)	79.56" (2,020.82mm)	8.90" (226.06mm)	6th Wettest	Wettest since: 1948	1999

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published January 2023, retrieved on February 1, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings