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, October 1977

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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
October 1977 1-Month	0.93" (23.62mm)	1.20" (30.48mm)	-0.27" (-6.86mm)	40th Driest	Driest since: 1976	1933
October 1977 1-Month	0.93" (23.62mm)	1.20" (30.48mm)	-0.27" (-6.86mm)	89th Wettest	Wettest since: 1975	1994
Sep–Oct 1977 2-Month	1.78" (45.21mm)	2.44" (61.98mm)	-0.66" (-16.77mm)	31st Driest	Driest since: 1968	1952
	1.78" (45.21mm)	2.44" (61.98mm)	-0.66" (-16.77mm)	98th Wettest	Wettest since: 1976	2013
	Ties: 1907
Aug–Oct 1977 3-Month	3.50" (88.90mm)	3.51" (89.15mm)	-0.01" (-0.25mm)	70th Driest	Driest since: 1976	1958
	3.50" (88.90mm)	3.51" (89.15mm)	-0.01" (-0.25mm)	59th Wettest	Wettest since: 1973	1923
	Ties: 1936, 2008
Jul–Oct 1977 4-Month	5.43" (137.92mm)	4.79" (121.67mm)	0.64" (16.25mm)	96th Driest	Driest since: 1976	1964
Jul–Oct 1977 4-Month	5.43" (137.92mm)	4.79" (121.67mm)	0.64" (16.25mm)	33rd Wettest	Wettest since: 1973	1923
Jun–Oct 1977 5-Month	6.49" (164.85mm)	6.62" (168.15mm)	-0.13" (-3.30mm)	74th Driest	Driest since: 1976	1988
	6.49" (164.85mm)	6.62" (168.15mm)	-0.13" (-3.30mm)	55th Wettest	Wettest since: 1973	1923
	Ties: 1940
May–Oct 1977 6-Month	8.64" (219.46mm)	8.84" (224.54mm)	-0.20" (-5.08mm)	65th Driest	Driest since: 1976	2012
May–Oct 1977 6-Month	8.64" (219.46mm)	8.84" (224.54mm)	-0.20" (-5.08mm)	64th Wettest	Wettest since: 1975	1923
Apr–Oct 1977 7-Month	9.93" (252.22mm)	10.61" (269.49mm)	-0.68" (-17.27mm)	54th Driest	Driest since: 1974	2012
Apr–Oct 1977 7-Month	9.93" (252.22mm)	10.61" (269.49mm)	-0.68" (-17.27mm)	75th Wettest	Wettest since: 1976	1941
Mar–Oct 1977 8-Month	11.47" (291.34mm)	11.86" (301.24mm)	-0.39" (-9.90mm)	57th Driest	Driest since: 1974	2012
	11.47" (291.34mm)	11.86" (301.24mm)	-0.39" (-9.90mm)	72nd Wettest	Wettest since: 1976	1941
	Ties: 1940
Feb–Oct 1977 9-Month	11.86" (301.24mm)	12.83" (325.88mm)	-0.97" (-24.64mm)	43rd Driest	Driest since: 1974	2012
Feb–Oct 1977 9-Month	11.86" (301.24mm)	12.83" (325.88mm)	-0.97" (-24.64mm)	86th Wettest	Wettest since: 1976	1941
Jan–Oct 1977 10-Month	12.68" (322.07mm)	13.89" (352.81mm)	-1.21" (-30.74mm)	39th Driest	Driest since: 1974	2012
Jan–Oct 1977 10-Month	12.68" (322.07mm)	13.89" (352.81mm)	-1.21" (-30.74mm)	90th Wettest	Wettest since: 1976	1923
Dec 1976–Oct 1977 11-Month	13.02" (330.71mm)	14.90" (378.46mm)	-1.88" (-47.75mm)	29th Driest	Driest since: 1974	2012
Dec 1976–Oct 1977 11-Month	13.02" (330.71mm)	14.90" (378.46mm)	-1.88" (-47.75mm)	99th Wettest	Wettest since: 1976	1923
Nov 1976–Oct 1977 12-Month	13.40" (340.36mm)	15.94" (404.88mm)	-2.54" (-64.52mm)	19th Driest	Driest since: 1966	1960
Nov 1976–Oct 1977 12-Month	13.40" (340.36mm)	15.94" (404.88mm)	-2.54" (-64.52mm)	109th Wettest	Wettest since: 1976	1923
May 1976–Oct 1977 18-Month	21.85" (554.99mm)	24.75" (628.65mm)	-2.90" (-73.66mm)	28th Driest	Driest since: 1961	1934
May 1976–Oct 1977 18-Month	21.85" (554.99mm)	24.75" (628.65mm)	-2.90" (-73.66mm)	100th Wettest	Wettest since: 1976	1927
Nov 1975–Oct 1977 24-Month	29.52" (749.81mm)	31.86" (809.24mm)	-2.34" (-59.43mm)	33rd Driest	Driest since: 1961	2002
Nov 1975–Oct 1977 24-Month	29.52" (749.81mm)	31.86" (809.24mm)	-2.34" (-59.43mm)	94th Wettest	Wettest since: 1976	1998
Nov 1974–Oct 1977 36-Month	45.59" (1,157.99mm)	47.81" (1,214.37mm)	-2.22" (-56.38mm)	36th Driest	Driest since: 1962	2002
Nov 1974–Oct 1977 36-Month	45.59" (1,157.99mm)	47.81" (1,214.37mm)	-2.22" (-56.38mm)	90th Wettest	Wettest since: 1976	1947
Nov 1973–Oct 1977 48-Month	60.24" (1,530.10mm)	63.72" (1,618.49mm)	-3.48" (-88.39mm)	35th Driest	Driest since: 1963	2003
Nov 1973–Oct 1977 48-Month	60.24" (1,530.10mm)	63.72" (1,618.49mm)	-3.48" (-88.39mm)	90th Wettest	Wettest since: 1976	1998
Nov 1972–Oct 1977 60-Month	77.66" (1,972.56mm)	79.57" (2,021.08mm)	-1.91" (-48.52mm)	50th Driest	Driest since: 1964	1935
Nov 1972–Oct 1977 60-Month	77.66" (1,972.56mm)	79.57" (2,021.08mm)	-1.91" (-48.52mm)	74th Wettest	Wettest since: 1976	1999

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published May 2023, retrieved on June 3, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings