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, January 1921

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  • Record Wettest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2023)		 Wettest/Driest
Since		 Record
January 1921
1-Month 		1.18"
(29.97mm)		 1.06"
(26.92mm)		 0.12"
(3.05mm)		 87th Driest
Driest since:
 1961
43rd Wettest
Wettest since:
 1895
Ties: 2000
Dec 1920–Jan 1921
2-Month 		2.24"
(56.90mm)		 2.07"
(52.58mm)		 0.17"
(4.32mm)		 84th Driest
Driest since:
 1931
45th Wettest
Wettest since:
 1997
Ties: 1973
Nov 1920–Jan 1921
3-Month 		3.15"
(80.01mm)		 3.10"
(78.74mm)		 0.05"
(1.27mm)		 71st Driest
Driest since:
 1931
58th Wettest
Wettest since:
 1943
Oct 1920–Jan 1921
4-Month 		4.56"
(115.82mm)		 4.30"
(109.22mm)		 0.26"
(6.60mm)		 76th Driest
Driest since:
 1934, 1977
53rd Wettest
Wettest since:
 1943
Ties: 1927
Sep 1920–Jan 1921
5-Month 		5.40"
(137.16mm)		 5.54"
(140.72mm)		 -0.14"
(-3.56mm)		 60th Driest
Driest since:
 1934
69th Wettest
Wettest since:
 1943
Aug 1920–Jan 1921
6-Month 		6.52"
(165.61mm)		 6.61"
(167.89mm)		 -0.09"
(-2.28mm)		 66th Driest
Driest since:
 1905
63rd Wettest
Wettest since:
 1928
Ties: 1923
Jul 1920–Jan 1921
7-Month 		7.30"
(185.42mm)		 7.89"
(200.41mm)		 -0.59"
(-14.99mm)		 50th Driest
Driest since:
 2021
79th Wettest
Wettest since:
 1924
Ties: 1906
Jun 1920–Jan 1921
8-Month 		8.58"
(217.93mm)		 9.72"
(246.89mm)		 -1.14"
(-28.96mm)		 36th Driest
Driest since:
 1934
93rd Wettest
Wettest since:
 1999
May 1920–Jan 1921
9-Month 		10.85"
(275.59mm)		 11.92"
(302.77mm)		 -1.07"
(-27.18mm)		 47th Driest
Driest since:
 1901
82nd Wettest
Wettest since:
 1909
Apr 1920–Jan 1921
10-Month 		13.76"
(349.50mm)		 13.72"
(348.49mm)		 0.04"
(1.01mm)		 63rd Driest
Driest since:
 1955
66th Wettest
Wettest since:
 1942
Mar 1920–Jan 1921
11-Month 		15.10"
(383.54mm)		 14.97"
(380.24mm)		 0.13"
(3.30mm)		 68th Driest
Driest since:
 2013
61st Wettest
Wettest since:
 1996
Feb 1920–Jan 1921
12-Month 		16.13"
(409.70mm)		 15.93"
(404.62mm)		 0.20"
(5.08mm)		 72nd Driest
Driest since:
 2013
57th Wettest
Wettest since:
 1996
Aug 1919–Jan 1921
18-Month 		23.25"
(590.55mm)		 22.54"
(572.52mm)		 0.71"
(18.03mm)		 77th Driest
Driest since:
 1935
51st Wettest
Wettest since:
 1996
Ties: 2011
Feb 1919–Jan 1921
24-Month 		28.67"
(728.22mm)		 31.88"
(809.75mm)		 -3.21"
(-81.53mm)		 28th Driest
Driest since:
 2003
100th Wettest
Wettest since:
 1943
Feb 1918–Jan 1921
36-Month 		44.40"
(1,127.76mm)		 47.78"
(1,213.61mm)		 -3.38"
(-85.85mm)		 35th Driest
Driest since:
 2003
92nd Wettest
Wettest since:
 1948
Feb 1917–Jan 1921
48-Month 		59.83"
(1,519.68mm)		 63.65"
(1,616.71mm)		 -3.82"
(-97.03mm)		 35th Driest
Driest since:
 2004
91st Wettest
Wettest since:
 1999
Feb 1916–Jan 1921
60-Month 		72.69"
(1,846.33mm)		 79.51"
(2,019.55mm)		 -6.82"
(-173.22mm)		 15th Driest
Driest since:
 2005
110th Wettest
Wettest since:
 2000

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