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, August 1991

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Wettest/Driest Since	Record
August 1991 1-Month	1.00" (25.40mm)	1.07" (27.18mm)	-0.07" (-1.78mm)	68th Driest	Driest since: 1989	1944
	1.00" (25.40mm)	1.07" (27.18mm)	-0.07" (-1.78mm)	61st Wettest	Wettest since: 1990	1930
	Ties: 1916, 1960, 1989
Jul–Aug 1991 2-Month	2.00" (50.80mm)	2.35" (59.69mm)	-0.35" (-8.89mm)	50th Driest	Driest since: 1988	2020
Jul–Aug 1991 2-Month	2.00" (50.80mm)	2.35" (59.69mm)	-0.35" (-8.89mm)	79th Wettest	Wettest since: 1990	1930
Jun–Aug 1991 3-Month	4.24" (107.70mm)	4.19" (106.43mm)	0.05" (1.27mm)	77th Driest	Driest since: 1990	1924
Jun–Aug 1991 3-Month	4.24" (107.70mm)	4.19" (106.43mm)	0.05" (1.27mm)	52nd Wettest	Wettest since: 1987	1945
May–Aug 1991 4-Month	7.94" (201.68mm)	6.40" (162.56mm)	1.54" (39.12mm)	108th Driest	Driest since: 1990	1919
May–Aug 1991 4-Month	7.94" (201.68mm)	6.40" (162.56mm)	1.54" (39.12mm)	21st Wettest	Wettest since: 1981	1908
Apr–Aug 1991 5-Month	10.25" (260.35mm)	8.18" (207.77mm)	2.07" (52.58mm)	115th Driest	Driest since: 1990	1924
Apr–Aug 1991 5-Month	10.25" (260.35mm)	8.18" (207.77mm)	2.07" (52.58mm)	14th Wettest	Wettest since: 1968	1941
Mar–Aug 1991 6-Month	11.55" (293.37mm)	9.43" (239.52mm)	2.12" (53.85mm)	115th Driest	Driest since: 1990	1919
Mar–Aug 1991 6-Month	11.55" (293.37mm)	9.43" (239.52mm)	2.12" (53.85mm)	14th Wettest	Wettest since: 1967	1941
Feb–Aug 1991 7-Month	12.09" (307.09mm)	10.39" (263.91mm)	1.70" (43.18mm)	107th Driest	Driest since: 1990	1919
	12.09" (307.09mm)	10.39" (263.91mm)	1.70" (43.18mm)	22nd Wettest	Wettest since: 1978	1941
	Ties: 1912
Jan–Aug 1991 8-Month	12.69" (322.33mm)	11.46" (291.08mm)	1.23" (31.25mm)	98th Driest	Driest since: 1990	1919
Jan–Aug 1991 8-Month	12.69" (322.33mm)	11.46" (291.08mm)	1.23" (31.25mm)	31st Wettest	Wettest since: 1978	1899
Dec 1990–Aug 1991 9-Month	13.51" (343.15mm)	12.47" (316.74mm)	1.04" (26.41mm)	89th Driest	Driest since: 1990	1919
Dec 1990–Aug 1991 9-Month	13.51" (343.15mm)	12.47" (316.74mm)	1.04" (26.41mm)	39th Wettest	Wettest since: 1983	1993
Nov 1990–Aug 1991 10-Month	14.74" (374.40mm)	13.50" (342.90mm)	1.24" (31.50mm)	89th Driest	Driest since: 1990	1919
Nov 1990–Aug 1991 10-Month	14.74" (374.40mm)	13.50" (342.90mm)	1.24" (31.50mm)	39th Wettest	Wettest since: 1986	1945
Oct 1990–Aug 1991 11-Month	15.88" (403.35mm)	14.70" (373.38mm)	1.18" (29.97mm)	84th Driest	Driest since: 1990	1919
Oct 1990–Aug 1991 11-Month	15.88" (403.35mm)	14.70" (373.38mm)	1.18" (29.97mm)	44th Wettest	Wettest since: 1986	1995
Sep 1990–Aug 1991 12-Month	16.93" (430.02mm)	15.93" (404.62mm)	1.00" (25.40mm)	85th Driest	Driest since: 1990	1934
Sep 1990–Aug 1991 12-Month	16.93" (430.02mm)	15.93" (404.62mm)	1.00" (25.40mm)	43rd Wettest	Wettest since: 1987	1995
Mar 1990–Aug 1991 18-Month	26.40" (670.56mm)	25.36" (644.14mm)	1.04" (26.42mm)	80th Driest	Driest since: 1990	2013
	26.40" (670.56mm)	25.36" (644.14mm)	1.04" (26.42mm)	48th Wettest	Wettest since: 1984	1945
	Ties: 1913
Sep 1989–Aug 1991 24-Month	32.66" (829.56mm)	31.86" (809.24mm)	0.80" (20.32mm)	73rd Driest	Driest since: 1990	2002
Sep 1989–Aug 1991 24-Month	32.66" (829.56mm)	31.86" (809.24mm)	0.80" (20.32mm)	54th Wettest	Wettest since: 1987	2015
Sep 1988–Aug 1991 36-Month	46.56" (1,182.62mm)	47.78" (1,213.61mm)	-1.22" (-30.99mm)	49th Driest	Driest since: 1990	2002
Sep 1988–Aug 1991 36-Month	46.56" (1,182.62mm)	47.78" (1,213.61mm)	-1.22" (-30.99mm)	77th Wettest	Wettest since: 1987	1997
Sep 1987–Aug 1991 48-Month	57.90" (1,470.66mm)	63.68" (1,617.47mm)	-5.78" (-146.81mm)	17th Driest	Driest since: 1962	2003
Sep 1987–Aug 1991 48-Month	57.90" (1,470.66mm)	63.68" (1,617.47mm)	-5.78" (-146.81mm)	108th Wettest	Wettest since: 1990	1998
Sep 1986–Aug 1991 60-Month	74.91" (1,902.71mm)	79.53" (2,020.06mm)	-4.62" (-117.35mm)	32nd Driest	Driest since: 1989	2004
Sep 1986–Aug 1991 60-Month	74.91" (1,902.71mm)	79.53" (2,020.06mm)	-4.62" (-117.35mm)	92nd Wettest	Wettest since: 1990	1999

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published January 2023, retrieved on February 4, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings