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 1930

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  • Record Wettest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2021)		 Wettest/Driest
Since		 Record
December 1930
1-Month 		0.33"
(8.38mm)		 1.01"
(25.65mm)		 -0.68"
(-17.27mm)		 2nd Driest
Driest since:
 1986
126th Wettest
Wettest since:
 1964, 1996
Ties: 1896
Nov–Dec 1930
2-Month 		1.00"
(25.40mm)		 2.05"
(52.07mm)		 -1.05"
(-26.67mm)		 5th Driest
Driest since:
 1914
123rd Wettest
Wettest since:
 1983
Ties: 1959
Oct–Dec 1930
3-Month 		3.17"
(80.52mm)		 3.24"
(82.30mm)		 -0.07"
(-1.78mm)		 58th Driest
Driest since:
 1976
70th Wettest
Wettest since:
 1942
Ties: 2006, 2012
Sep–Dec 1930
4-Month 		4.19"
(106.43mm)		 4.48"
(113.79mm)		 -0.29"
(-7.36mm)		 53rd Driest
Driest since:
 1952
75th Wettest
Wettest since:
 2013
Aug–Dec 1930
5-Month 		7.38"
(187.45mm)		 5.55"
(140.97mm)		 1.83"
(46.48mm)		 116th Driest
Driest since:
 1904
12th Wettest
Wettest since:
 1923
Jul–Dec 1930
6-Month 		8.65"
(219.71mm)		 6.83"
(173.48mm)		 1.82"
(46.23mm)		 115th Driest
Driest since:
 1939
13th Wettest
Wettest since:
 1923
Jun–Dec 1930
7-Month 		9.63"
(244.60mm)		 8.67"
(220.22mm)		 0.96"
(24.38mm)		 97th Driest
Driest since:
 1935
31st Wettest
Wettest since:
 1923
May–Dec 1930
8-Month 		12.29"
(312.17mm)		 10.88"
(276.35mm)		 1.41"
(35.82mm)		 94th Driest
Driest since:
 1900
34th Wettest
Wettest since:
 1923
Ties: 1968
Apr–Dec 1930
9-Month 		13.52"
(343.41mm)		 12.66"
(321.56mm)		 0.86"
(21.85mm)		 85th Driest
Driest since:
 1954
43rd Wettest
Wettest since:
 1941
Mar–Dec 1930
10-Month 		14.64"
(371.86mm)		 13.91"
(353.31mm)		 0.73"
(18.55mm)		 78th Driest
Driest since:
 2012
50th Wettest
Wettest since:
 1941
Feb–Dec 1930
11-Month 		15.51"
(393.95mm)		 14.88"
(377.95mm)		 0.63"
(16.00mm)		 81st Driest
Driest since:
 2012
47th Wettest
Wettest since:
 1941
Jan–Dec 1930
12-Month 		16.70"
(424.18mm)		 15.94"
(404.88mm)		 0.76"
(19.30mm)		 80th Driest
Driest since:
 2012
48th Wettest
Wettest since:
 1927
Jul 1929–Dec 1930
18-Month 		23.64"
(600.46mm)		 22.77"
(578.36mm)		 0.87"
(22.10mm)		 77th Driest
Driest since:
 1934
50th Wettest
Wettest since:
 1927
Jan 1929–Dec 1930
24-Month 		33.73"
(856.74mm)		 31.86"
(809.24mm)		 1.87"
(47.50mm)		 87th Driest
Driest since:
 2002
40th Wettest
Wettest since:
 1983
Jan 1928–Dec 1930
36-Month 		49.85"
(1,266.19mm)		 47.82"
(1,214.63mm)		 2.03"
(51.56mm)		 87th Driest
Driest since:
 2002
39th Wettest
Wettest since:
 1947
Jan 1927–Dec 1930
48-Month 		70.35"
(1,786.89mm)		 63.72"
(1,618.49mm)		 6.63"
(168.40mm)		 111th Driest
Driest since:
 2003
14th Wettest
Wettest since:
 1998
Jan 1926–Dec 1930
60-Month 		87.10"
(2,212.34mm)		 79.58"
(2,021.33mm)		 7.52"
(191.01mm)		 111th Driest
Driest since:
 1935
13th Wettest
Wettest since:
 1999

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