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, October 2017

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  • Record Wettest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
October 2017
1-Month 		0.79"
(20.07mm)		 1.20"
(30.48mm)		 -0.41"
(-10.41mm)		 34th Driest
Driest since:
 1933
95th Wettest
Wettest since:
 1994
Ties: 1904, 1948
Sep–Oct 2017
2-Month 		3.00"
(76.20mm)		 2.44"
(61.98mm)		 0.56"
(14.22mm)		 97th Driest
Driest since:
 1952
32nd Wettest
Wettest since:
 2013
Aug–Oct 2017
3-Month 		3.94"
(100.08mm)		 3.51"
(89.15mm)		 0.43"
(10.93mm)		 90th Driest
Driest since:
 1958
39th Wettest
Wettest since:
 1923
Jul–Oct 2017
4-Month 		4.91"
(124.71mm)		 4.79"
(121.67mm)		 0.12"
(3.04mm)		 76th Driest
Driest since:
 1964
53rd Wettest
Wettest since:
 1923
Jun–Oct 2017
5-Month 		6.00"
(152.40mm)		 6.62"
(168.15mm)		 -0.62"
(-15.75mm)		 51st Driest
Driest since:
 1988
78th Wettest
Wettest since:
 1923
Ties: 1907, 2018
May–Oct 2017
6-Month 		7.80"
(198.12mm)		 8.84"
(224.54mm)		 -1.04"
(-26.42mm)		 44th Driest
Driest since:
 2012
85th Wettest
Wettest since:
 1923
Apr–Oct 2017
7-Month 		10.60"
(269.24mm)		 10.61"
(269.49mm)		 -0.01"
(-0.25mm)		 71st Driest
Driest since:
 2012
58th Wettest
Wettest since:
 1941
Ties: 1896, 2008
Mar–Oct 2017
8-Month 		12.48"
(316.99mm)		 11.86"
(301.24mm)		 0.62"
(15.75mm)		 82nd Driest
Driest since:
 2012
47th Wettest
Wettest since:
 1941
Feb–Oct 2017
9-Month 		14.50"
(368.30mm)		 12.83"
(325.88mm)		 1.67"
(42.42mm)		 104th Driest
Driest since:
 2012
25th Wettest
Wettest since:
 1941
Ties: 2009
Jan–Oct 2017
10-Month 		16.16"
(410.46mm)		 13.89"
(352.81mm)		 2.27"
(57.65mm)		 108th Driest
Driest since:
 2012
21st Wettest
Wettest since:
 1923
Dec 2016–Oct 2017
11-Month 		17.98"
(456.69mm)		 14.90"
(378.46mm)		 3.08"
(78.23mm)		 115th Driest
Driest since:
 2012
13th Wettest
Wettest since:
 1923
Nov 2016–Oct 2017
12-Month 		18.82"
(478.03mm)		 15.94"
(404.88mm)		 2.88"
(73.15mm)		 113th Driest
Driest since:
 1960
15th Wettest
Wettest since:
 1923
May 2016–Oct 2017
18-Month 		27.26"
(692.40mm)		 24.75"
(628.65mm)		 2.51"
(63.75mm)		 101st Driest
Driest since:
 1934
27th Wettest
Wettest since:
 1927
Nov 2015–Oct 2017
24-Month 		35.64"
(905.26mm)		 31.86"
(809.24mm)		 3.78"
(96.02mm)		 114th Driest
Driest since:
 2002
13th Wettest
Wettest since:
 1998
Nov 2014–Oct 2017
36-Month 		52.91"
(1,343.91mm)		 47.81"
(1,214.37mm)		 5.10"
(129.54mm)		 112th Driest
Driest since:
 2002
14th Wettest
Wettest since:
 1947
Ties: 1995
Nov 2013–Oct 2017
48-Month 		69.96"
(1,776.98mm)		 63.72"
(1,618.49mm)		 6.24"
(158.49mm)		 112th Driest
Driest since:
 2003
13th Wettest
Wettest since:
 1998
Nov 2012–Oct 2017
60-Month 		86.63"
(2,200.40mm)		 79.57"
(2,021.08mm)		 7.06"
(179.32mm)		 110th Driest
Driest since:
 1935
14th Wettest
Wettest since:
 1999

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