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 2017

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 2017
1-Month
1.02"
(25.91mm)
1.01"
(25.65mm)
0.01"
(0.26mm)
71st Driest
Driest since:
1986
57th Wettest
Wettest since:
1964, 1996
Ties: 1899, 1913
Nov–Dec 2017
2-Month
2.50"
(63.50mm)
2.05"
(52.07mm)
0.45"
(11.43mm)
98th Driest
Driest since:
1914
30th Wettest
Wettest since:
1983
Oct–Dec 2017
3-Month
3.29"
(83.57mm)
3.24"
(82.30mm)
0.05"
(1.27mm)
68th Driest
Driest since:
1976
60th Wettest
Wettest since:
1942
Sep–Dec 2017
4-Month
5.50"
(139.70mm)
4.48"
(113.79mm)
1.02"
(25.91mm)
106th Driest
Driest since:
1952
22nd Wettest
Wettest since:
2013
Aug–Dec 2017
5-Month
6.44"
(163.58mm)
5.55"
(140.97mm)
0.89"
(22.61mm)
97th Driest
Driest since:
1904
31st Wettest
Wettest since:
1923
Jul–Dec 2017
6-Month
7.41"
(188.21mm)
6.83"
(173.48mm)
0.58"
(14.73mm)
89th Driest
Driest since:
1939
39th Wettest
Wettest since:
1923
Ties: 1896
Jun–Dec 2017
7-Month
8.50"
(215.90mm)
8.67"
(220.22mm)
-0.17"
(-4.32mm)
65th Driest
Driest since:
1935
63rd Wettest
Wettest since:
1923
May–Dec 2017
8-Month
10.30"
(261.62mm)
10.88"
(276.35mm)
-0.58"
(-14.73mm)
50th Driest
Driest since:
1900
78th Wettest
Wettest since:
1923
Ties: 1989
Apr–Dec 2017
9-Month
13.10"
(332.74mm)
12.66"
(321.56mm)
0.44"
(11.18mm)
74th Driest
Driest since:
1954
54th Wettest
Wettest since:
1941
Mar–Dec 2017
10-Month
14.98"
(380.49mm)
13.91"
(353.31mm)
1.07"
(27.18mm)
90th Driest
Driest since:
2012
38th Wettest
Wettest since:
1941
Feb–Dec 2017
11-Month
17.00"
(431.80mm)
14.88"
(377.95mm)
2.12"
(53.85mm)
102nd Driest
Driest since:
2012
26th Wettest
Wettest since:
1941
Jan–Dec 2017
12-Month
18.66"
(473.96mm)
15.94"
(404.88mm)
2.72"
(69.08mm)
114th Driest
Driest since:
2012
14th Wettest
Wettest since:
1927
Jul 2016–Dec 2017
18-Month
26.64"
(676.66mm)
22.77"
(578.36mm)
3.87"
(98.30mm)
116th Driest
Driest since:
1934
11th Wettest
Wettest since:
1927
Jan 2016–Dec 2017
24-Month
35.94"
(912.88mm)
31.87"
(809.50mm)
4.07"
(103.38mm)
115th Driest
Driest since:
2002
12th Wettest
Wettest since:
1983
Jan 2015–Dec 2017
36-Month
52.65"
(1,337.31mm)
47.82"
(1,214.63mm)
4.83"
(122.68mm)
107th Driest
Driest since:
2002
19th Wettest
Wettest since:
1947
Jan 2014–Dec 2017
48-Month
70.75"
(1,797.05mm)
63.72"
(1,618.49mm)
7.03"
(178.56mm)
117th Driest
Driest since:
2003
8th Wettest
Wettest since:
1998
Jan 2013–Dec 2017
60-Month
87.07"
(2,211.58mm)
79.58"
(2,021.33mm)
7.49"
(190.25mm)
110th Driest
Driest since:
1935
14th Wettest
Wettest since:
1999

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