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 1901

View Period (Months):
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
September 1901
1-Month
0.70"
(17.78mm)
1.24"
(31.50mm)
-0.54"
(-13.72mm)
29th Driest
Driest since:
1979
100th Wettest
Wettest since:
1923
Ties: 1992
Aug–Sep 1901
2-Month
1.90"
(48.26mm)
2.31"
(58.67mm)
-0.41"
(-10.41mm)
53rd Driest
Driest since:
2012
76th Wettest
Wettest since:
1923
Jul–Sep 1901
3-Month
2.77"
(70.36mm)
3.59"
(91.19mm)
-0.82"
(-20.83mm)
41st Driest
Driest since:
1964
88th Wettest
Wettest since:
1923
Jun–Sep 1901
4-Month
4.74"
(120.40mm)
5.43"
(137.92mm)
-0.69"
(-17.52mm)
52nd Driest
Driest since:
2012
77th Wettest
Wettest since:
1923
May–Sep 1901
5-Month
7.35"
(186.69mm)
7.64"
(194.06mm)
-0.29"
(-7.37mm)
60th Driest
Driest since:
1919
69th Wettest
Wettest since:
1915
Ties: 1959
Apr–Sep 1901
6-Month
9.17"
(232.92mm)
9.42"
(239.27mm)
-0.25"
(-6.35mm)
60th Driest
Driest since:
2012
69th Wettest
Wettest since:
1941
Ties: 1975
Mar–Sep 1901
7-Month
10.34"
(262.64mm)
10.67"
(271.02mm)
-0.33"
(-8.38mm)
59th Driest
Driest since:
2012
70th Wettest
Wettest since:
1941
Feb–Sep 1901
8-Month
11.69"
(296.93mm)
11.63"
(295.40mm)
0.06"
(1.53mm)
72nd Driest
Driest since:
2012
57th Wettest
Wettest since:
1945
Jan–Sep 1901
9-Month
12.43"
(315.72mm)
12.70"
(322.58mm)
-0.27"
(-6.86mm)
62nd Driest
Driest since:
1919
67th Wettest
Wettest since:
1915, 1945
Dec 1900–Sep 1901
10-Month
13.10"
(332.74mm)
13.71"
(348.23mm)
-0.61"
(-15.49mm)
54th Driest
Driest since:
1919
74th Wettest
Wettest since:
1923
Nov 1900–Sep 1901
11-Month
14.00"
(355.60mm)
14.74"
(374.40mm)
-0.74"
(-18.80mm)
51st Driest
Driest since:
1919
77th Wettest
Wettest since:
1923
Oct 1900–Sep 1901
12-Month
15.05"
(382.27mm)
15.94"
(404.88mm)
-0.89"
(-22.61mm)
50th Driest
Driest since:
1919
78th Wettest
Wettest since:
1995
Apr 1900–Sep 1901
18-Month
23.28"
(591.31mm)
25.35"
(643.89mm)
-2.07"
(-52.58mm)
37th Driest
Driest since:
2021
91st Wettest
Wettest since:
1945
Oct 1899–Sep 1901
24-Month
28.81"
(731.77mm)
31.88"
(809.75mm)
-3.07"
(-77.98mm)
27th Driest
Driest since:
2002
100th Wettest
Wettest since:
1998
Oct 1898–Sep 1901
36-Month
46.75"
(1,187.45mm)
47.81"
(1,214.37mm)
-1.06"
(-26.92mm)
49th Driest
Driest since:
2002
77th Wettest
Wettest since:
1997
Oct 1897–Sep 1901
48-Month
62.20"
(1,579.88mm)
63.72"
(1,618.49mm)
-1.52"
(-38.61mm)
53rd Driest
Driest since:
2003
72nd Wettest
Wettest since:
1998
Oct 1896–Sep 1901
60-Month
75.48"
(1,917.19mm)
79.56"
(2,020.82mm)
-4.08"
(-103.63mm)
36th Driest
Driest since:
2004
88th Wettest
Wettest since:
1999

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