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 1997

View Period (Months):
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
September 1997
1-Month
1.72"
(43.69mm)
1.24"
(31.50mm)
0.48"
(12.19mm)
102nd Driest
Driest since:
1979
27th Wettest
Wettest since:
1923
Aug–Sep 1997
2-Month
3.47"
(88.14mm)
2.31"
(58.67mm)
1.16"
(29.47mm)
115th Driest
Driest since:
2012
14th Wettest
Wettest since:
1923
Jul–Sep 1997
3-Month
5.70"
(144.78mm)
3.59"
(91.19mm)
2.11"
(53.59mm)
123rd Driest
Driest since:
1964
6th Wettest
Wettest since:
1923
Jun–Sep 1997
4-Month
7.84"
(199.14mm)
5.43"
(137.92mm)
2.41"
(61.22mm)
123rd Driest
Driest since:
2012
6th Wettest
Wettest since:
1923
May–Sep 1997
5-Month
9.88"
(250.95mm)
7.64"
(194.06mm)
2.24"
(56.89mm)
117th Driest
Driest since:
1919
12th Wettest
Wettest since:
1915
Ties: 1941
Apr–Sep 1997
6-Month
11.82"
(300.23mm)
9.42"
(239.27mm)
2.40"
(60.96mm)
115th Driest
Driest since:
2012
14th Wettest
Wettest since:
1941
Mar–Sep 1997
7-Month
12.71"
(322.83mm)
10.67"
(271.02mm)
2.04"
(51.81mm)
109th Driest
Driest since:
2012
20th Wettest
Wettest since:
1941
Feb–Sep 1997
8-Month
13.56"
(344.42mm)
11.63"
(295.40mm)
1.93"
(49.02mm)
107th Driest
Driest since:
2012
22nd Wettest
Wettest since:
1945
Jan–Sep 1997
9-Month
15.16"
(385.06mm)
12.70"
(322.58mm)
2.46"
(62.48mm)
113th Driest
Driest since:
1919
16th Wettest
Wettest since:
1915, 1945
Dec 1996–Sep 1997
10-Month
17.45"
(443.23mm)
13.71"
(348.23mm)
3.74"
(95.00mm)
125th Driest
Driest since:
1919
3rd Wettest
Wettest since:
1923
Nov 1996–Sep 1997
11-Month
18.83"
(478.28mm)
14.74"
(374.40mm)
4.09"
(103.88mm)
125th Driest
Driest since:
1919
3rd Wettest
Wettest since:
1923
Oct 1996–Sep 1997
12-Month
20.26"
(514.60mm)
15.94"
(404.88mm)
4.32"
(109.72mm)
126th Driest
Driest since:
1919
2nd Wettest
Wettest since:
1995
Apr 1996–Sep 1997
18-Month
28.64"
(727.46mm)
25.35"
(643.89mm)
3.29"
(83.57mm)
109th Driest
Driest since:
2021
19th Wettest
Wettest since:
1945
Oct 1995–Sep 1997
24-Month
36.35"
(923.29mm)
31.88"
(809.75mm)
4.47"
(113.54mm)
119th Driest
Driest since:
2002
8th Wettest
Wettest since:
1998
Oct 1994–Sep 1997
36-Month
57.70"
(1,465.58mm)
47.81"
(1,214.37mm)
9.89"
(251.21mm)
125th Driest
Driest since:
2002
1st Wettest
Wettest to Date
1997
Oct 1993–Sep 1997
48-Month
70.00"
(1,778.00mm)
63.72"
(1,618.49mm)
6.28"
(159.51mm)
111th Driest
Driest since:
2003
14th Wettest
Wettest since:
1998
Oct 1992–Sep 1997
60-Month
88.46"
(2,246.88mm)
79.56"
(2,020.82mm)
8.90"
(226.06mm)
118th Driest
Driest since:
2004
6th Wettest
Wettest since:
1999

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