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 1984

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  • Record Wettest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
September 1984
1-Month 		1.55"
(39.37mm)		 1.24"
(31.50mm)		 0.31"
(7.87mm)		 95th Driest
Driest since:
 1979
34th Wettest
Wettest since:
 1923
Aug–Sep 1984
2-Month 		2.76"
(70.10mm)		 2.31"
(58.67mm)		 0.45"
(11.43mm)		 94th Driest
Driest since:
 2012
35th Wettest
Wettest since:
 1923
Jul–Sep 1984
3-Month 		4.63"
(117.60mm)		 3.59"
(91.19mm)		 1.04"
(26.41mm)		 110th Driest
Driest since:
 1964
19th Wettest
Wettest since:
 1923
Jun–Sep 1984
4-Month 		6.53"
(165.86mm)		 5.43"
(137.92mm)		 1.10"
(27.94mm)		 108th Driest
Driest since:
 2012
21st Wettest
Wettest since:
 1923
May–Sep 1984
5-Month 		7.92"
(201.17mm)		 7.64"
(194.06mm)		 0.28"
(7.11mm)		 78th Driest
Driest since:
 1919
51st Wettest
Wettest since:
 1915
Apr–Sep 1984
6-Month 		10.39"
(263.91mm)		 9.42"
(239.27mm)		 0.97"
(24.64mm)		 95th Driest
Driest since:
 2012
34th Wettest
Wettest since:
 1941
Mar–Sep 1984
7-Month 		11.61"
(294.89mm)		 10.67"
(271.02mm)		 0.94"
(23.87mm)		 87th Driest
Driest since:
 2012
42nd Wettest
Wettest since:
 1941
Feb–Sep 1984
8-Month 		12.27"
(311.66mm)		 11.63"
(295.40mm)		 0.64"
(16.26mm)		 80th Driest
Driest since:
 2012
49th Wettest
Wettest since:
 1945
Jan–Sep 1984
9-Month 		12.89"
(327.41mm)		 12.70"
(322.58mm)		 0.19"
(4.83mm)		 70th Driest
Driest since:
 1919
59th Wettest
Wettest since:
 1915, 1945
Dec 1983–Sep 1984
10-Month 		14.48"
(367.79mm)		 13.71"
(348.23mm)		 0.77"
(19.56mm)		 80th Driest
Driest since:
 1919
48th Wettest
Wettest since:
 1923
Nov 1983–Sep 1984
11-Month 		16.80"
(426.72mm)		 14.74"
(374.40mm)		 2.06"
(52.32mm)		 107th Driest
Driest since:
 1919
21st Wettest
Wettest since:
 1923
Ties: 1947
Oct 1983–Sep 1984
12-Month 		18.27"
(464.06mm)		 15.94"
(404.88mm)		 2.33"
(59.18mm)		 105th Driest
Driest since:
 1919
23rd Wettest
Wettest since:
 1995
Apr 1983–Sep 1984
18-Month 		28.43"
(722.12mm)		 25.35"
(643.89mm)		 3.08"
(78.23mm)		 106th Driest
Driest since:
 2021
22nd Wettest
Wettest since:
 1945
Oct 1982–Sep 1984
24-Month 		35.41"
(899.41mm)		 31.88"
(809.75mm)		 3.53"
(89.66mm)		 109th Driest
Driest since:
 2002
18th Wettest
Wettest since:
 1998
Oct 1981–Sep 1984
36-Month 		55.05"
(1,398.27mm)		 47.81"
(1,214.37mm)		 7.24"
(183.90mm)		 121st Driest
Driest since:
 2002
5th Wettest
Wettest since:
 1997
Oct 1980–Sep 1984
48-Month 		69.88"
(1,774.95mm)		 63.72"
(1,618.49mm)		 6.16"
(156.46mm)		 110th Driest
Driest since:
 2003
15th Wettest
Wettest since:
 1998
Oct 1979–Sep 1984
60-Month 		85.59"
(2,173.99mm)		 79.56"
(2,020.82mm)		 6.03"
(153.17mm)		 105th Driest
Driest since:
 2004
19th Wettest
Wettest since:
 1999

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