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 1986

View Period (Months):
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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
September 1986
1-Month
2.12"
(53.85mm)
1.24"
(31.50mm)
0.88"
(22.35mm)
115th Driest
Driest since:
1979
14th Wettest
Wettest since:
1923
Aug–Sep 1986
2-Month
3.03"
(76.96mm)
2.31"
(58.67mm)
0.72"
(18.29mm)
109th Driest
Driest since:
2012
20th Wettest
Wettest since:
1923
Jul–Sep 1986
3-Month
4.32"
(109.73mm)
3.59"
(91.19mm)
0.73"
(18.54mm)
100th Driest
Driest since:
1964
29th Wettest
Wettest since:
1923
Jun–Sep 1986
4-Month
6.33"
(160.78mm)
5.43"
(137.92mm)
0.90"
(22.86mm)
103rd Driest
Driest since:
2012
26th Wettest
Wettest since:
1923
May–Sep 1986
5-Month
8.01"
(203.45mm)
7.64"
(194.06mm)
0.37"
(9.39mm)
81st Driest
Driest since:
1919
48th Wettest
Wettest since:
1915
Apr–Sep 1986
6-Month
10.43"
(264.92mm)
9.42"
(239.27mm)
1.01"
(25.65mm)
96th Driest
Driest since:
2012
33rd Wettest
Wettest since:
1941
Mar–Sep 1986
7-Month
11.43"
(290.32mm)
10.67"
(271.02mm)
0.76"
(19.30mm)
84th Driest
Driest since:
2012
45th Wettest
Wettest since:
1941
Feb–Sep 1986
8-Month
13.72"
(348.49mm)
11.63"
(295.40mm)
2.09"
(53.09mm)
111th Driest
Driest since:
2012
18th Wettest
Wettest since:
1945
Jan–Sep 1986
9-Month
14.49"
(368.05mm)
12.70"
(322.58mm)
1.79"
(45.47mm)
102nd Driest
Driest since:
1919
27th Wettest
Wettest since:
1915, 1945
Dec 1985–Sep 1986
10-Month
15.40"
(391.16mm)
13.71"
(348.23mm)
1.69"
(42.93mm)
99th Driest
Driest since:
1919
29th Wettest
Wettest since:
1923
Nov 1985–Sep 1986
11-Month
17.36"
(440.94mm)
14.74"
(374.40mm)
2.62"
(66.54mm)
113th Driest
Driest since:
1919
15th Wettest
Wettest since:
1923
Oct 1985–Sep 1986
12-Month
18.36"
(466.34mm)
15.94"
(404.88mm)
2.42"
(61.46mm)
106th Driest
Driest since:
1919
22nd Wettest
Wettest since:
1995
Apr 1985–Sep 1986
18-Month
26.22"
(665.99mm)
25.35"
(643.89mm)
0.87"
(22.10mm)
78th Driest
Driest since:
2021
50th Wettest
Wettest since:
1945
Oct 1984–Sep 1986
24-Month
31.45"
(798.83mm)
31.88"
(809.75mm)
-0.43"
(-10.92mm)
58th Driest
Driest since:
2002
69th Wettest
Wettest since:
1998
Oct 1983–Sep 1986
36-Month
49.72"
(1,262.89mm)
47.81"
(1,214.37mm)
1.91"
(48.52mm)
84th Driest
Driest since:
2002
42nd Wettest
Wettest since:
1997
Oct 1982–Sep 1986
48-Month
66.86"
(1,698.24mm)
63.72"
(1,618.49mm)
3.14"
(79.75mm)
89th Driest
Driest since:
2003
36th Wettest
Wettest since:
1998
Oct 1981–Sep 1986
60-Month
86.50"
(2,197.10mm)
79.56"
(2,020.82mm)
6.94"
(176.28mm)
109th Driest
Driest since:
2004
15th Wettest
Wettest since:
1999

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