Statewide Rankings

Statewide Data Info
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 1939

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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 1939
1-Month 		0.51"
(12.95mm)		 1.01"
(25.65mm)		 -0.50"
(-12.70mm)		 10th Driest
Driest since:
 1986
119th Wettest
Wettest since:
 1964, 1996
Nov–Dec 1939
2-Month 		0.53"
(13.46mm)		 2.05"
(52.07mm)		 -1.52"
(-38.61mm)		 2nd Driest
Driest since:
 1914
127th Wettest
Wettest since:
 1983
Oct–Dec 1939
3-Month 		1.48"
(37.59mm)		 3.24"
(82.30mm)		 -1.76"
(-44.71mm)		 2nd Driest
Driest since:
 1976
127th Wettest
Wettest since:
 1942
Sep–Dec 1939
4-Month 		2.53"
(64.26mm)		 4.48"
(113.79mm)		 -1.95"
(-49.53mm)		 5th Driest
Driest since:
 1952
124th Wettest
Wettest since:
 2013
Aug–Dec 1939
5-Month 		3.25"
(82.55mm)		 5.55"
(140.97mm)		 -2.30"
(-58.42mm)		 3rd Driest
Driest since:
 1904
126th Wettest
Wettest since:
 1923
Jul–Dec 1939
6-Month 		3.90"
(99.06mm)		 6.83"
(173.48mm)		 -2.93"
(-74.42mm)		 1st Driest
Driest since:
 1939
128th Wettest
Wettest since:
 1923
Jun–Dec 1939
7-Month 		5.63"
(143.00mm)		 8.67"
(220.22mm)		 -3.04"
(-77.22mm)		 6th Driest
Driest since:
 1935
123rd Wettest
Wettest since:
 1923
May–Dec 1939
8-Month 		7.35"
(186.69mm)		 10.88"
(276.35mm)		 -3.53"
(-89.66mm)		 7th Driest
Driest since:
 1900
122nd Wettest
Wettest since:
 1923
Apr–Dec 1939
9-Month 		8.39"
(213.11mm)		 12.66"
(321.56mm)		 -4.27"
(-108.45mm)		 3rd Driest
Driest since:
 1954
126th Wettest
Wettest since:
 1941
Mar–Dec 1939
10-Month 		9.17"
(232.92mm)		 13.91"
(353.31mm)		 -4.74"
(-120.39mm)		 2nd Driest
Driest since:
 2012
127th Wettest
Wettest since:
 1941
Feb–Dec 1939
11-Month 		10.31"
(261.87mm)		 14.88"
(377.95mm)		 -4.57"
(-116.08mm)		 2nd Driest
Driest since:
 2012
127th Wettest
Wettest since:
 1941
Jan–Dec 1939
12-Month 		11.26"
(286.00mm)		 15.94"
(404.88mm)		 -4.68"
(-118.88mm)		 2nd Driest
Driest since:
 2012
127th Wettest
Wettest since:
 1927
Jul 1938–Dec 1939
18-Month 		18.97"
(481.84mm)		 22.77"
(578.36mm)		 -3.80"
(-96.52mm)		 13th Driest
Driest since:
 1934
115th Wettest
Wettest since:
 1927
Jan 1938–Dec 1939
24-Month 		28.37"
(720.60mm)		 31.87"
(809.50mm)		 -3.50"
(-88.90mm)		 25th Driest
Driest since:
 2002
103rd Wettest
Wettest since:
 1983
Jan 1937–Dec 1939
36-Month 		46.45"
(1,179.83mm)		 47.82"
(1,214.63mm)		 -1.37"
(-34.80mm)		 51st Driest
Driest since:
 2002
76th Wettest
Wettest since:
 1947
Jan 1936–Dec 1939
48-Month 		62.34"
(1,583.44mm)		 63.72"
(1,618.49mm)		 -1.38"
(-35.05mm)		 54th Driest
Driest since:
 2003
72nd Wettest
Wettest since:
 1998
Jan 1935–Dec 1939
60-Month 		76.12"
(1,933.45mm)		 79.58"
(2,021.33mm)		 -3.46"
(-87.88mm)		 41st Driest
Driest since:
 1935
84th Wettest
Wettest since:
 1999

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