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 1938

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  • Record Wettest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
December 1938
1-Month 		0.81"
(20.57mm)		 1.01"
(25.65mm)		 -0.20"
(-5.08mm)		 43rd Driest
Driest since:
 1986
86th Wettest
Wettest since:
 1964, 1996
Ties: 1947, 2019
Nov–Dec 1938
2-Month 		2.15"
(54.61mm)		 2.05"
(52.07mm)		 0.10"
(2.54mm)		 78th Driest
Driest since:
 1914
51st Wettest
Wettest since:
 1983
Oct–Dec 1938
3-Month 		3.68"
(93.47mm)		 3.24"
(82.30mm)		 0.44"
(11.17mm)		 90th Driest
Driest since:
 1976
39th Wettest
Wettest since:
 1942
Ties: 1948, 1967
Sep–Dec 1938
4-Month 		5.03"
(127.76mm)		 4.48"
(113.79mm)		 0.55"
(13.97mm)		 93rd Driest
Driest since:
 1952
36th Wettest
Wettest since:
 2013
Ties: 2004
Aug–Dec 1938
5-Month 		6.14"
(155.96mm)		 5.55"
(140.97mm)		 0.59"
(14.99mm)		 87th Driest
Driest since:
 1904
42nd Wettest
Wettest since:
 1923
Jul–Dec 1938
6-Month 		7.71"
(195.83mm)		 6.83"
(173.48mm)		 0.88"
(22.35mm)		 99th Driest
Driest since:
 1939
30th Wettest
Wettest since:
 1923
Jun–Dec 1938
7-Month 		9.15"
(232.41mm)		 8.67"
(220.22mm)		 0.48"
(12.19mm)		 84th Driest
Driest since:
 1935
45th Wettest
Wettest since:
 1923
May–Dec 1938
8-Month 		11.96"
(303.78mm)		 10.88"
(276.35mm)		 1.08"
(27.43mm)		 92nd Driest
Driest since:
 1900
37th Wettest
Wettest since:
 1923
Apr–Dec 1938
9-Month 		13.71"
(348.23mm)		 12.66"
(321.56mm)		 1.05"
(26.67mm)		 92nd Driest
Driest since:
 1954
37th Wettest
Wettest since:
 1941
Mar–Dec 1938
10-Month 		15.52"
(394.21mm)		 13.91"
(353.31mm)		 1.61"
(40.90mm)		 98th Driest
Driest since:
 2012
31st Wettest
Wettest since:
 1941
Feb–Dec 1938
11-Month 		16.17"
(410.72mm)		 14.88"
(377.95mm)		 1.29"
(32.77mm)		 94th Driest
Driest since:
 2012
35th Wettest
Wettest since:
 1941
Jan–Dec 1938
12-Month 		17.11"
(434.59mm)		 15.94"
(404.88mm)		 1.17"
(29.71mm)		 92nd Driest
Driest since:
 2012
37th Wettest
Wettest since:
 1927
Jul 1937–Dec 1938
18-Month 		25.61"
(650.49mm)		 22.77"
(578.36mm)		 2.84"
(72.13mm)		 110th Driest
Driest since:
 1934
18th Wettest
Wettest since:
 1927
Ties: 1986
Jan 1937–Dec 1938
24-Month 		35.19"
(893.83mm)		 31.87"
(809.50mm)		 3.32"
(84.33mm)		 105th Driest
Driest since:
 2002
23rd Wettest
Wettest since:
 1983
Jan 1936–Dec 1938
36-Month 		51.08"
(1,297.43mm)		 47.82"
(1,214.63mm)		 3.26"
(82.80mm)		 96th Driest
Driest since:
 2002
31st Wettest
Wettest since:
 1947
Jan 1935–Dec 1938
48-Month 		64.86"
(1,647.44mm)		 63.72"
(1,618.49mm)		 1.14"
(28.95mm)		 76th Driest
Driest since:
 2003
50th Wettest
Wettest since:
 1998
Jan 1934–Dec 1938
60-Month 		76.86"
(1,952.24mm)		 79.58"
(2,021.33mm)		 -2.72"
(-69.09mm)		 44th Driest
Driest since:
 1935
81st Wettest
Wettest since:
 1999

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