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, August 2020

View Period (Months):
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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
August 2020
1-Month 		0.30"
(7.62mm)		 1.07"
(27.18mm)		 -0.77"
(-19.56mm)		 3rd Driest
Driest since:
 1944
126th Wettest
Wettest since:
 1930
Ties: 1902
Jul–Aug 2020
2-Month 		0.99"
(25.15mm)		 2.35"
(59.69mm)		 -1.36"
(-34.54mm)		 1st Driest
Driest since:
 2020
128th Wettest
Wettest since:
 1930
Jun–Aug 2020
3-Month 		2.66"
(67.56mm)		 4.19"
(106.43mm)		 -1.53"
(-38.87mm)		 14th Driest
Driest since:
 1924
115th Wettest
Wettest since:
 1945
Ties: 1902
May–Aug 2020
4-Month 		3.91"
(99.31mm)		 6.40"
(162.56mm)		 -2.49"
(-63.25mm)		 10th Driest
Driest since:
 1919
119th Wettest
Wettest since:
 1908
Apr–Aug 2020
5-Month 		5.23"
(132.84mm)		 8.18"
(207.77mm)		 -2.95"
(-74.93mm)		 7th Driest
Driest since:
 1924
122nd Wettest
Wettest since:
 1941
Ties: 1916
Mar–Aug 2020
6-Month 		6.26"
(159.00mm)		 9.43"
(239.52mm)		 -3.17"
(-80.52mm)		 8th Driest
Driest since:
 1919
121st Wettest
Wettest since:
 1941
Feb–Aug 2020
7-Month 		7.47"
(189.74mm)		 10.39"
(263.91mm)		 -2.92"
(-74.17mm)		 12th Driest
Driest since:
 1919
117th Wettest
Wettest since:
 1941
Ties: 1934
Jan–Aug 2020
8-Month 		8.49"
(215.65mm)		 11.46"
(291.08mm)		 -2.97"
(-75.43mm)		 16th Driest
Driest since:
 1919
113th Wettest
Wettest since:
 1899
Dec 2019–Aug 2020
9-Month 		9.30"
(236.22mm)		 12.47"
(316.74mm)		 -3.17"
(-80.52mm)		 16th Driest
Driest since:
 1919
112th Wettest
Wettest since:
 1993
Nov 2019–Aug 2020
10-Month 		10.38"
(263.65mm)		 13.50"
(342.90mm)		 -3.12"
(-79.25mm)		 15th Driest
Driest since:
 1919
113th Wettest
Wettest since:
 1945
Oct 2019–Aug 2020
11-Month 		11.57"
(293.88mm)		 14.70"
(373.38mm)		 -3.13"
(-79.50mm)		 14th Driest
Driest since:
 1919
114th Wettest
Wettest since:
 1995
Sep 2019–Aug 2020
12-Month 		13.55"
(344.17mm)		 15.93"
(404.62mm)		 -2.38"
(-60.45mm)		 27th Driest
Driest since:
 1934
101st Wettest
Wettest since:
 1995
Mar 2019–Aug 2020
18-Month 		24.53"
(623.06mm)		 25.36"
(644.14mm)		 -0.83"
(-21.08mm)		 52nd Driest
Driest since:
 2013
76th Wettest
Wettest since:
 1945
Sep 2018–Aug 2020
24-Month 		30.53"
(775.46mm)		 31.86"
(809.24mm)		 -1.33"
(-33.78mm)		 43rd Driest
Driest since:
 2002
84th Wettest
Wettest since:
 2015
Sep 2017–Aug 2020
36-Month 		48.45"
(1,230.63mm)		 47.78"
(1,213.61mm)		 0.67"
(17.02mm)		 74th Driest
Driest since:
 2002
52nd Wettest
Wettest since:
 1997
Sep 2016–Aug 2020
48-Month 		68.05"
(1,728.47mm)		 63.68"
(1,617.47mm)		 4.37"
(111.00mm)		 98th Driest
Driest since:
 2003
27th Wettest
Wettest since:
 1998
Sep 2015–Aug 2020
60-Month 		82.84"
(2,104.14mm)		 79.53"
(2,020.06mm)		 3.31"
(84.08mm)		 90th Driest
Driest since:
 2004
34th Wettest
Wettest since:
 1999

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