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 1949

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  • Record Wettest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
September 1949
1-Month 		0.95"
(24.13mm)		 1.24"
(31.50mm)		 -0.29"
(-7.37mm)		 52nd Driest
Driest since:
 1979
77th Wettest
Wettest since:
 1923
Ties: 1944
Aug–Sep 1949
2-Month 		1.53"
(38.86mm)		 2.31"
(58.67mm)		 -0.78"
(-19.81mm)		 27th Driest
Driest since:
 2012
102nd Wettest
Wettest since:
 1923
Ties: 1911, 2001
Jul–Sep 1949
3-Month 		2.49"
(63.25mm)		 3.59"
(91.19mm)		 -1.10"
(-27.94mm)		 26th Driest
Driest since:
 1964
103rd Wettest
Wettest since:
 1923
Jun–Sep 1949
4-Month 		4.60"
(116.84mm)		 5.43"
(137.92mm)		 -0.83"
(-21.08mm)		 47th Driest
Driest since:
 2012
82nd Wettest
Wettest since:
 1923
May–Sep 1949
5-Month 		7.37"
(187.20mm)		 7.64"
(194.06mm)		 -0.27"
(-6.86mm)		 63rd Driest
Driest since:
 1919
66th Wettest
Wettest since:
 1915
Apr–Sep 1949
6-Month 		8.44"
(214.38mm)		 9.42"
(239.27mm)		 -0.98"
(-24.89mm)		 41st Driest
Driest since:
 2012
88th Wettest
Wettest since:
 1941
Mar–Sep 1949
7-Month 		9.83"
(249.68mm)		 10.67"
(271.02mm)		 -0.84"
(-21.34mm)		 43rd Driest
Driest since:
 2012
86th Wettest
Wettest since:
 1941
Feb–Sep 1949
8-Month 		10.78"
(273.81mm)		 11.63"
(295.40mm)		 -0.85"
(-21.59mm)		 40th Driest
Driest since:
 2012
89th Wettest
Wettest since:
 1945
Jan–Sep 1949
9-Month 		12.67"
(321.82mm)		 12.70"
(322.58mm)		 -0.03"
(-0.76mm)		 65th Driest
Driest since:
 1919
64th Wettest
Wettest since:
 1915, 1945
Dec 1948–Sep 1949
10-Month 		14.17"
(359.92mm)		 13.71"
(348.23mm)		 0.46"
(11.69mm)		 75th Driest
Driest since:
 1919
53rd Wettest
Wettest since:
 1923
Nov 1948–Sep 1949
11-Month 		15.56"
(395.22mm)		 14.74"
(374.40mm)		 0.82"
(20.82mm)		 80th Driest
Driest since:
 1919
48th Wettest
Wettest since:
 1923
Oct 1948–Sep 1949
12-Month 		16.35"
(415.29mm)		 15.94"
(404.88mm)		 0.41"
(10.41mm)		 71st Driest
Driest since:
 1919
57th Wettest
Wettest since:
 1995
Apr 1948–Sep 1949
18-Month 		24.92"
(632.97mm)		 25.35"
(643.89mm)		 -0.43"
(-10.92mm)		 58th Driest
Driest since:
 2021
70th Wettest
Wettest since:
 1945
Oct 1947–Sep 1949
24-Month 		32.45"
(824.23mm)		 31.88"
(809.75mm)		 0.57"
(14.48mm)		 73rd Driest
Driest since:
 2002
54th Wettest
Wettest since:
 1998
Oct 1946–Sep 1949
36-Month 		51.72"
(1,313.69mm)		 47.81"
(1,214.37mm)		 3.91"
(99.32mm)		 104th Driest
Driest since:
 2002
22nd Wettest
Wettest since:
 1997
Oct 1945–Sep 1949
48-Month 		68.57"
(1,741.68mm)		 63.72"
(1,618.49mm)		 4.85"
(123.19mm)		 103rd Driest
Driest since:
 2003
22nd Wettest
Wettest since:
 1998
Oct 1944–Sep 1949
60-Month 		88.20"
(2,240.28mm)		 79.56"
(2,020.82mm)		 8.64"
(219.46mm)		 117th Driest
Driest since:
 2004
7th Wettest
Wettest since:
 1999

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