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, December 1991

View Period (Months):
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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Wettest/Driest
Since
Record
December 1991
1-Month
0.44"
(11.18mm)
1.01"
(25.65mm)
-0.57"
(-14.47mm)
9th Driest
Driest since:
1986
119th Wettest
Wettest since:
1964, 1996
Nov–Dec 1991
2-Month
2.07"
(52.58mm)
2.05"
(52.07mm)
0.02"
(0.51mm)
73rd Driest
Driest since:
1914
55th Wettest
Wettest since:
1983
Ties: 1901, 2018
Oct–Dec 1991
3-Month
3.08"
(78.23mm)
3.24"
(82.30mm)
-0.16"
(-4.07mm)
52nd Driest
Driest since:
1976
76th Wettest
Wettest since:
1942
Ties: 2019
Sep–Dec 1991
4-Month
4.40"
(111.76mm)
4.48"
(113.79mm)
-0.08"
(-2.03mm)
63rd Driest
Driest since:
1952
65th Wettest
Wettest since:
2013
Ties: 1913
Aug–Dec 1991
5-Month
5.40"
(137.16mm)
5.55"
(140.97mm)
-0.15"
(-3.81mm)
64th Driest
Driest since:
1904
64th Wettest
Wettest since:
1923
Jul–Dec 1991
6-Month
6.40"
(162.56mm)
6.83"
(173.48mm)
-0.43"
(-10.92mm)
52nd Driest
Driest since:
1939
76th Wettest
Wettest since:
1923
Jun–Dec 1991
7-Month
8.64"
(219.46mm)
8.67"
(220.22mm)
-0.03"
(-0.76mm)
72nd Driest
Driest since:
1935
56th Wettest
Wettest since:
1923
Ties: 2016
May–Dec 1991
8-Month
12.34"
(313.44mm)
10.88"
(276.35mm)
1.46"
(37.09mm)
96th Driest
Driest since:
1900
32nd Wettest
Wettest since:
1923
Apr–Dec 1991
9-Month
14.65"
(372.11mm)
12.66"
(321.56mm)
1.99"
(50.55mm)
105th Driest
Driest since:
1954
23rd Wettest
Wettest since:
1941
Mar–Dec 1991
10-Month
15.95"
(405.13mm)
13.91"
(353.31mm)
2.04"
(51.82mm)
105th Driest
Driest since:
2012
23rd Wettest
Wettest since:
1941
Feb–Dec 1991
11-Month
16.49"
(418.85mm)
14.88"
(377.95mm)
1.61"
(40.90mm)
98th Driest
Driest since:
2012
30th Wettest
Wettest since:
1941
Jan–Dec 1991
12-Month
17.09"
(434.09mm)
15.94"
(404.88mm)
1.15"
(29.21mm)
89th Driest
Driest since:
2012
39th Wettest
Wettest since:
1927
Jul 1990–Dec 1991
18-Month
24.35"
(618.49mm)
22.77"
(578.36mm)
1.58"
(40.13mm)
90th Driest
Driest since:
1934
37th Wettest
Wettest since:
1927
Jan 1990–Dec 1991
24-Month
32.47"
(824.74mm)
31.87"
(809.50mm)
0.60"
(15.24mm)
68th Driest
Driest since:
2002
59th Wettest
Wettest since:
1983
Jan 1989–Dec 1991
36-Month
47.49"
(1,206.25mm)
47.82"
(1,214.63mm)
-0.33"
(-8.38mm)
64th Driest
Driest since:
2002
62nd Wettest
Wettest since:
1947
Jan 1988–Dec 1991
48-Month
58.91"
(1,496.31mm)
63.72"
(1,618.49mm)
-4.81"
(-122.18mm)
24th Driest
Driest since:
2003
101st Wettest
Wettest since:
1998
Jan 1987–Dec 1991
60-Month
73.77"
(1,873.76mm)
79.58"
(2,021.33mm)
-5.81"
(-147.57mm)
23rd Driest
Driest since:
1935
101st Wettest
Wettest since:
1999

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