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 2015

View Period (Months):
Download: csv json xml
  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
September 2015
1-Month
0.64"
(16.26mm)
1.24"
(31.50mm)
-0.60"
(-15.24mm)
26th Driest
Driest since:
1979
103rd Wettest
Wettest since:
1923
Aug–Sep 2015
2-Month
1.55"
(39.37mm)
2.31"
(58.67mm)
-0.76"
(-19.30mm)
32nd Driest
Driest since:
2012
97th Wettest
Wettest since:
1923
Jul–Sep 2015
3-Month
3.08"
(78.23mm)
3.59"
(91.19mm)
-0.51"
(-12.96mm)
52nd Driest
Driest since:
1964
77th Wettest
Wettest since:
1923
Jun–Sep 2015
4-Month
4.97"
(126.24mm)
5.43"
(137.92mm)
-0.46"
(-11.68mm)
58th Driest
Driest since:
2012
71st Wettest
Wettest since:
1923
May–Sep 2015
5-Month
9.56"
(242.82mm)
7.64"
(194.06mm)
1.92"
(48.76mm)
113th Driest
Driest since:
1919
16th Wettest
Wettest since:
1915
Apr–Sep 2015
6-Month
11.26"
(286.00mm)
9.42"
(239.27mm)
1.84"
(46.73mm)
108th Driest
Driest since:
2012
21st Wettest
Wettest since:
1941
Mar–Sep 2015
7-Month
11.84"
(300.74mm)
10.67"
(271.02mm)
1.17"
(29.72mm)
96th Driest
Driest since:
2012
33rd Wettest
Wettest since:
1941
Ties: 1938, 2009
Feb–Sep 2015
8-Month
12.78"
(324.61mm)
11.63"
(295.40mm)
1.15"
(29.21mm)
90th Driest
Driest since:
2012
39th Wettest
Wettest since:
1945
Jan–Sep 2015
9-Month
13.40"
(340.36mm)
12.70"
(322.58mm)
0.70"
(17.78mm)
83rd Driest
Driest since:
1919
46th Wettest
Wettest since:
1915, 1945
Dec 2014–Sep 2015
10-Month
14.75"
(374.65mm)
13.71"
(348.23mm)
1.04"
(26.42mm)
83rd Driest
Driest since:
1919
45th Wettest
Wettest since:
1923
Nov 2014–Sep 2015
11-Month
16.16"
(410.46mm)
14.74"
(374.40mm)
1.42"
(36.06mm)
92nd Driest
Driest since:
1919
36th Wettest
Wettest since:
1923
Oct 2014–Sep 2015
12-Month
16.73"
(424.94mm)
15.94"
(404.88mm)
0.79"
(20.06mm)
79th Driest
Driest since:
1919
49th Wettest
Wettest since:
1995
Apr 2014–Sep 2015
18-Month
27.10"
(688.34mm)
25.35"
(643.89mm)
1.75"
(44.45mm)
91st Driest
Driest since:
2021
37th Wettest
Wettest since:
1945
Oct 2013–Sep 2015
24-Month
35.74"
(907.80mm)
31.88"
(809.75mm)
3.86"
(98.05mm)
111th Driest
Driest since:
2002
16th Wettest
Wettest since:
1998
Oct 2012–Sep 2015
36-Month
50.99"
(1,295.15mm)
47.81"
(1,214.37mm)
3.18"
(80.78mm)
98th Driest
Driest since:
2002
28th Wettest
Wettest since:
1997
Ties: 1930
Oct 2011–Sep 2015
48-Month
62.78"
(1,594.61mm)
63.72"
(1,618.49mm)
-0.94"
(-23.88mm)
59th Driest
Driest since:
2003
66th Wettest
Wettest since:
1998
Oct 2010–Sep 2015
60-Month
81.65"
(2,073.91mm)
79.56"
(2,020.82mm)
2.09"
(53.09mm)
80th Driest
Driest since:
2004
44th Wettest
Wettest since:
1999

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