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 1940

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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 1940 1-Month	0.64" (16.26mm)	1.01" (25.65mm)	-0.37" (-9.39mm)	17th Driest	Driest since: 1939	1986
	0.64" (16.26mm)	1.01" (25.65mm)	-0.37" (-9.39mm)	112th Wettest	Wettest since: 1938	1964, 1996
	Ties: 1912
Nov–Dec 1940 2-Month	1.86" (47.24mm)	2.05" (52.07mm)	-0.19" (-4.83mm)	54th Driest	Driest since: 1939	1914
Nov–Dec 1940 2-Month	1.86" (47.24mm)	2.05" (52.07mm)	-0.19" (-4.83mm)	75th Wettest	Wettest since: 1938	1983
Oct–Dec 1940 3-Month	3.02" (76.71mm)	3.24" (82.30mm)	-0.22" (-5.59mm)	47th Driest	Driest since: 1939	1976
Oct–Dec 1940 3-Month	3.02" (76.71mm)	3.24" (82.30mm)	-0.22" (-5.59mm)	82nd Wettest	Wettest since: 1938	1942
Sep–Dec 1940 4-Month	5.45" (138.43mm)	4.48" (113.79mm)	0.97" (24.64mm)	105th Driest	Driest since: 1939	1952
	5.45" (138.43mm)	4.48" (113.79mm)	0.97" (24.64mm)	24th Wettest	Wettest since: 1927	2013
	Ties: 1925
Aug–Dec 1940 5-Month	5.93" (150.62mm)	5.55" (140.97mm)	0.38" (9.65mm)	83rd Driest	Driest since: 1939	1904
	5.93" (150.62mm)	5.55" (140.97mm)	0.38" (9.65mm)	46th Wettest	Wettest since: 1938	1923
	Ties: 1978
Jul–Dec 1940 6-Month	6.99" (177.55mm)	6.83" (173.48mm)	0.16" (4.07mm)	72nd Driest	Driest since: 1939	1939
Jul–Dec 1940 6-Month	6.99" (177.55mm)	6.83" (173.48mm)	0.16" (4.07mm)	57th Wettest	Wettest since: 1938	1923
Jun–Dec 1940 7-Month	8.35" (212.09mm)	8.67" (220.22mm)	-0.32" (-8.13mm)	60th Driest	Driest since: 1939	1935
Jun–Dec 1940 7-Month	8.35" (212.09mm)	8.67" (220.22mm)	-0.32" (-8.13mm)	69th Wettest	Wettest since: 1938	1923
May–Dec 1940 8-Month	9.19" (233.43mm)	10.88" (276.35mm)	-1.69" (-42.92mm)	34th Driest	Driest since: 1939	1900
May–Dec 1940 8-Month	9.19" (233.43mm)	10.88" (276.35mm)	-1.69" (-42.92mm)	95th Wettest	Wettest since: 1938	1923
Apr–Dec 1940 9-Month	12.24" (310.90mm)	12.66" (321.56mm)	-0.42" (-10.66mm)	53rd Driest	Driest since: 1939	1954
Apr–Dec 1940 9-Month	12.24" (310.90mm)	12.66" (321.56mm)	-0.42" (-10.66mm)	76th Wettest	Wettest since: 1938	1941
Mar–Dec 1940 10-Month	13.33" (338.58mm)	13.91" (353.31mm)	-0.58" (-14.73mm)	54th Driest	Driest since: 1939	2012
	13.33" (338.58mm)	13.91" (353.31mm)	-0.58" (-14.73mm)	75th Wettest	Wettest since: 1938	1941
	Ties: 1895
Feb–Dec 1940 11-Month	14.56" (369.82mm)	14.88" (377.95mm)	-0.32" (-8.13mm)	58th Driest	Driest since: 1939	2012
Feb–Dec 1940 11-Month	14.56" (369.82mm)	14.88" (377.95mm)	-0.32" (-8.13mm)	71st Wettest	Wettest since: 1938	1941
Jan–Dec 1940 12-Month	16.17" (410.72mm)	15.94" (404.88mm)	0.23" (5.84mm)	69th Driest	Driest since: 1939	2012
Jan–Dec 1940 12-Month	16.17" (410.72mm)	15.94" (404.88mm)	0.23" (5.84mm)	60th Wettest	Wettest since: 1938	1927
Jul 1939–Dec 1940 18-Month	20.07" (509.78mm)	22.77" (578.36mm)	-2.70" (-68.58mm)	27th Driest	Driest since: 1939	1934
Jul 1939–Dec 1940 18-Month	20.07" (509.78mm)	22.77" (578.36mm)	-2.70" (-68.58mm)	101st Wettest	Wettest since: 1938	1927
Jan 1939–Dec 1940 24-Month	27.43" (696.72mm)	31.87" (809.50mm)	-4.44" (-112.78mm)	17th Driest	Driest since: 1935	2002
Jan 1939–Dec 1940 24-Month	27.43" (696.72mm)	31.87" (809.50mm)	-4.44" (-112.78mm)	111th Wettest	Wettest since: 1939	1983
Jan 1938–Dec 1940 36-Month	44.54" (1,131.32mm)	47.82" (1,214.63mm)	-3.28" (-83.31mm)	33rd Driest	Driest since: 1936	2002
Jan 1938–Dec 1940 36-Month	44.54" (1,131.32mm)	47.82" (1,214.63mm)	-3.28" (-83.31mm)	94th Wettest	Wettest since: 1939	1947
Jan 1937–Dec 1940 48-Month	62.62" (1,590.55mm)	63.72" (1,618.49mm)	-1.10" (-27.94mm)	60th Driest	Driest since: 1939	2003
	62.62" (1,590.55mm)	63.72" (1,618.49mm)	-1.10" (-27.94mm)	66th Wettest	Wettest since: 1938	1998
	Ties: 1987
Jan 1936–Dec 1940 60-Month	78.51" (1,994.15mm)	79.58" (2,021.33mm)	-1.07" (-27.18mm)	57th Driest	Driest since: 1939	1935
Jan 1936–Dec 1940 60-Month	78.51" (1,994.15mm)	79.58" (2,021.33mm)	-1.07" (-27.18mm)	68th Wettest	Wettest since: 1931	1999

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published March 2023, retrieved on March 31, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings