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, September 2013

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  • Record Wettest
PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Wettest/Driest
Since		Record
September 2013
1-Month		2.88"
(73.15mm)		1.24"
(31.50mm)		1.64"
(41.65mm)		124th Driest
Driest since:
1979
5th Wettest
Wettest since:
1923
Aug–Sep 2013
2-Month		3.78"
(96.01mm)		2.31"
(58.67mm)		1.47"
(37.34mm)		119th Driest
Driest since:
2012
10th Wettest
Wettest since:
1923
Jul–Sep 2013
3-Month		5.10"
(129.54mm)		3.59"
(91.19mm)		1.51"
(38.35mm)		117th Driest
Driest since:
1964
12th Wettest
Wettest since:
1923
Jun–Sep 2013
4-Month		5.78"
(146.81mm)		5.43"
(137.92mm)		0.35"
(8.89mm)		86th Driest
Driest since:
2012
43rd Wettest
Wettest since:
1923
May–Sep 2013
5-Month		7.97"
(202.44mm)		7.64"
(194.06mm)		0.33"
(8.38mm)		79th Driest
Driest since:
1919
50th Wettest
Wettest since:
1915
Apr–Sep 2013
6-Month		9.84"
(249.94mm)		9.42"
(239.27mm)		0.42"
(10.67mm)		80th Driest
Driest since:
2012
49th Wettest
Wettest since:
1941
Mar–Sep 2013
7-Month		10.55"
(267.97mm)		10.67"
(271.02mm)		-0.12"
(-3.05mm)		66th Driest
Driest since:
2012
63rd Wettest
Wettest since:
1941
Feb–Sep 2013
8-Month		11.34"
(288.04mm)		11.63"
(295.40mm)		-0.29"
(-7.36mm)		61st Driest
Driest since:
2012
68th Wettest
Wettest since:
1945
Jan–Sep 2013
9-Month		12.08"
(306.83mm)		12.70"
(322.58mm)		-0.62"
(-15.75mm)		49th Driest
Driest since:
1919
80th Wettest
Wettest since:
1915, 1945
Dec 2012–Sep 2013
10-Month		13.27"
(337.06mm)		13.71"
(348.23mm)		-0.44"
(-11.17mm)		59th Driest
Driest since:
1919
69th Wettest
Wettest since:
1923
Nov 2012–Sep 2013
11-Month		14.14"
(359.16mm)		14.74"
(374.40mm)		-0.60"
(-15.24mm)		54th Driest
Driest since:
1919
74th Wettest
Wettest since:
1923
Oct 2012–Sep 2013
12-Month		15.25"
(387.35mm)		15.94"
(404.88mm)		-0.69"
(-17.53mm)		52nd Driest
Driest since:
1919
76th Wettest
Wettest since:
1995
Apr 2012–Sep 2013
18-Month		20.26"
(514.60mm)		25.35"
(643.89mm)		-5.09"
(-129.29mm)		8th Driest
Driest since:
2021
120th Wettest
Wettest since:
1945
Oct 2011–Sep 2013
24-Month		27.04"
(686.82mm)		31.88"
(809.75mm)		-4.84"
(-122.93mm)		15th Driest
Driest since:
2002
112th Wettest
Wettest since:
1998
Oct 2010–Sep 2013
36-Month		45.91"
(1,166.11mm)		47.81"
(1,214.37mm)		-1.90"
(-48.26mm)		41st Driest
Driest since:
2002
85th Wettest
Wettest since:
1997
Oct 2009–Sep 2013
48-Month		62.02"
(1,575.31mm)		63.72"
(1,618.49mm)		-1.70"
(-43.18mm)		52nd Driest
Driest since:
2003
73rd Wettest
Wettest since:
1998
Oct 2008–Sep 2013
60-Month		79.19"
(2,011.43mm)		79.56"
(2,020.82mm)		-0.37"
(-9.39mm)		65th Driest
Driest since:
2004
59th Wettest
Wettest since:
1999

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