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 1964

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Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
September 1964
1-Month 		0.28"
(7.11mm)		 1.24"
(31.50mm)		 -0.96"
(-24.39mm)		 2nd Driest
Driest since:
 1979
127th Wettest
Wettest since:
 1923
Aug–Sep 1964
2-Month 		1.12"
(28.45mm)		 2.31"
(58.67mm)		 -1.19"
(-30.22mm)		 6th Driest
Driest since:
 2012
123rd Wettest
Wettest since:
 1923
Ties: 2020
Jul–Sep 1964
3-Month 		1.65"
(41.91mm)		 3.59"
(91.19mm)		 -1.94"
(-49.28mm)		 1st Driest
Driest since:
 1964
128th Wettest
Wettest since:
 1923
Jun–Sep 1964
4-Month 		4.99"
(126.75mm)		 5.43"
(137.92mm)		 -0.44"
(-11.17mm)		 59th Driest
Driest since:
 2012
70th Wettest
Wettest since:
 1923
May–Sep 1964
5-Month 		7.31"
(185.67mm)		 7.64"
(194.06mm)		 -0.33"
(-8.39mm)		 58th Driest
Driest since:
 1919
71st Wettest
Wettest since:
 1915
Apr–Sep 1964
6-Month 		9.79"
(248.67mm)		 9.42"
(239.27mm)		 0.37"
(9.40mm)		 78th Driest
Driest since:
 2012
51st Wettest
Wettest since:
 1941
Mar–Sep 1964
7-Month 		10.89"
(276.61mm)		 10.67"
(271.02mm)		 0.22"
(5.59mm)		 75th Driest
Driest since:
 2012
54th Wettest
Wettest since:
 1941
Ties: 2005
Feb–Sep 1964
8-Month 		11.76"
(298.70mm)		 11.63"
(295.40mm)		 0.13"
(3.30mm)		 74th Driest
Driest since:
 2012
55th Wettest
Wettest since:
 1945
Jan–Sep 1964
9-Month 		12.78"
(324.61mm)		 12.70"
(322.58mm)		 0.08"
(2.03mm)		 68th Driest
Driest since:
 1919
61st Wettest
Wettest since:
 1915, 1945
Dec 1963–Sep 1964
10-Month 		13.48"
(342.39mm)		 13.71"
(348.23mm)		 -0.23"
(-5.84mm)		 62nd Driest
Driest since:
 1919
66th Wettest
Wettest since:
 1923
Nov 1963–Sep 1964
11-Month 		14.20"
(360.68mm)		 14.74"
(374.40mm)		 -0.54"
(-13.72mm)		 55th Driest
Driest since:
 1919
73rd Wettest
Wettest since:
 1923
Oct 1963–Sep 1964
12-Month 		14.91"
(378.71mm)		 15.94"
(404.88mm)		 -1.03"
(-26.17mm)		 48th Driest
Driest since:
 1919
80th Wettest
Wettest since:
 1995
Apr 1963–Sep 1964
18-Month 		26.19"
(665.23mm)		 25.35"
(643.89mm)		 0.84"
(21.34mm)		 77th Driest
Driest since:
 2021
51st Wettest
Wettest since:
 1945
Oct 1962–Sep 1964
24-Month 		31.30"
(795.02mm)		 31.88"
(809.75mm)		 -0.58"
(-14.73mm)		 55th Driest
Driest since:
 2002
72nd Wettest
Wettest since:
 1998
Oct 1961–Sep 1964
36-Month 		48.98"
(1,244.09mm)		 47.81"
(1,214.37mm)		 1.17"
(29.72mm)		 81st Driest
Driest since:
 2002
45th Wettest
Wettest since:
 1997
Oct 1960–Sep 1964
48-Month 		63.37"
(1,609.60mm)		 63.72"
(1,618.49mm)		 -0.35"
(-8.89mm)		 62nd Driest
Driest since:
 2003
63rd Wettest
Wettest since:
 1998
Oct 1959–Sep 1964
60-Month 		74.20"
(1,884.68mm)		 79.56"
(2,020.82mm)		 -5.36"
(-136.14mm)		 27th Driest
Driest since:
 2004
97th Wettest
Wettest since:
 1999

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