Statewide Rankings

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Month:

State:

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 1998

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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
September 1998 1-Month	1.34" (34.04mm)	1.24" (31.50mm)	0.10" (2.54mm)	81st Driest	Driest since: 1996	1979
September 1998 1-Month	1.34" (34.04mm)	1.24" (31.50mm)	0.10" (2.54mm)	48th Wettest	Wettest since: 1997	1923
Aug–Sep 1998 2-Month	2.71" (68.83mm)	2.31" (58.67mm)	0.40" (10.16mm)	91st Driest	Driest since: 1996	2012
Aug–Sep 1998 2-Month	2.71" (68.83mm)	2.31" (58.67mm)	0.40" (10.16mm)	38th Wettest	Wettest since: 1997	1923
Jul–Sep 1998 3-Month	4.45" (113.03mm)	3.59" (91.19mm)	0.86" (21.84mm)	104th Driest	Driest since: 1996	1964
Jul–Sep 1998 3-Month	4.45" (113.03mm)	3.59" (91.19mm)	0.86" (21.84mm)	25th Wettest	Wettest since: 1997	1923
Jun–Sep 1998 4-Month	7.78" (197.61mm)	5.43" (137.92mm)	2.35" (59.69mm)	122nd Driest	Driest since: 1996	2012
Jun–Sep 1998 4-Month	7.78" (197.61mm)	5.43" (137.92mm)	2.35" (59.69mm)	7th Wettest	Wettest since: 1997	1923
May–Sep 1998 5-Month	9.22" (234.19mm)	7.64" (194.06mm)	1.58" (40.13mm)	106th Driest	Driest since: 1996	1919
May–Sep 1998 5-Month	9.22" (234.19mm)	7.64" (194.06mm)	1.58" (40.13mm)	23rd Wettest	Wettest since: 1997	1915
Apr–Sep 1998 6-Month	10.58" (268.73mm)	9.42" (239.27mm)	1.16" (29.46mm)	97th Driest	Driest since: 1996	2012
Apr–Sep 1998 6-Month	10.58" (268.73mm)	9.42" (239.27mm)	1.16" (29.46mm)	32nd Wettest	Wettest since: 1997	1941
Mar–Sep 1998 7-Month	12.40" (314.96mm)	10.67" (271.02mm)	1.73" (43.94mm)	106th Driest	Driest since: 1996	2012
Mar–Sep 1998 7-Month	12.40" (314.96mm)	10.67" (271.02mm)	1.73" (43.94mm)	23rd Wettest	Wettest since: 1997	1941
Feb–Sep 1998 8-Month	13.30" (337.82mm)	11.63" (295.40mm)	1.67" (42.42mm)	101st Driest	Driest since: 1996	2012
Feb–Sep 1998 8-Month	13.30" (337.82mm)	11.63" (295.40mm)	1.67" (42.42mm)	28th Wettest	Wettest since: 1997	1945
Jan–Sep 1998 9-Month	14.71" (373.63mm)	12.70" (322.58mm)	2.01" (51.05mm)	106th Driest	Driest since: 1996	1919
Jan–Sep 1998 9-Month	14.71" (373.63mm)	12.70" (322.58mm)	2.01" (51.05mm)	23rd Wettest	Wettest since: 1997	1915, 1945
Dec 1997–Sep 1998 10-Month	15.60" (396.24mm)	13.71" (348.23mm)	1.89" (48.01mm)	102nd Driest	Driest since: 1996	1919
Dec 1997–Sep 1998 10-Month	15.60" (396.24mm)	13.71" (348.23mm)	1.89" (48.01mm)	26th Wettest	Wettest since: 1997	1923
Nov 1997–Sep 1998 11-Month	16.15" (410.21mm)	14.74" (374.40mm)	1.41" (35.81mm)	91st Driest	Driest since: 1996	1919
Nov 1997–Sep 1998 11-Month	16.15" (410.21mm)	14.74" (374.40mm)	1.41" (35.81mm)	37th Wettest	Wettest since: 1997	1923
Oct 1997–Sep 1998 12-Month	17.53" (445.26mm)	15.94" (404.88mm)	1.59" (40.38mm)	95th Driest	Driest since: 1996	1919
Oct 1997–Sep 1998 12-Month	17.53" (445.26mm)	15.94" (404.88mm)	1.59" (40.38mm)	33rd Wettest	Wettest since: 1997	1995
Apr 1997–Sep 1998 18-Month	29.35" (745.49mm)	25.35" (643.89mm)	4.00" (101.60mm)	116th Driest	Driest since: 1997	2021
Apr 1997–Sep 1998 18-Month	29.35" (745.49mm)	25.35" (643.89mm)	4.00" (101.60mm)	12th Wettest	Wettest since: 1983	1945
Oct 1996–Sep 1998 24-Month	37.79" (959.87mm)	31.88" (809.75mm)	5.91" (150.12mm)	126th Driest	Driest since: 1997	2002
Oct 1996–Sep 1998 24-Month	37.79" (959.87mm)	31.88" (809.75mm)	5.91" (150.12mm)	1st Wettest	Wettest to Date	1998
Oct 1995–Sep 1998 36-Month	53.88" (1,368.55mm)	47.81" (1,214.37mm)	6.07" (154.18mm)	116th Driest	Driest since: 1996	2002
	53.88" (1,368.55mm)	47.81" (1,214.37mm)	6.07" (154.18mm)	10th Wettest	Wettest since: 1997	1997
	Ties: 1973
Oct 1994–Sep 1998 48-Month	75.23" (1,910.84mm)	63.72" (1,618.49mm)	11.51" (292.35mm)	124th Driest	Driest since: 1997	2003
Oct 1994–Sep 1998 48-Month	75.23" (1,910.84mm)	63.72" (1,618.49mm)	11.51" (292.35mm)	1st Wettest	Wettest to Date	1998
Oct 1993–Sep 1998 60-Month	87.53" (2,223.26mm)	79.56" (2,020.82mm)	7.97" (202.44mm)	113th Driest	Driest since: 1996	2004
Oct 1993–Sep 1998 60-Month	87.53" (2,223.26mm)	79.56" (2,020.82mm)	7.97" (202.44mm)	11th Wettest	Wettest since: 1997	1999

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published May 2023, retrieved on May 30, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings