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 1915

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 1915
1-Month
3.06"
(77.72mm)
1.24"
(31.50mm)
1.82"
(46.22mm)
125th Driest
Driest since:
1979
4th Wettest
Wettest to Date
1923
Aug–Sep 1915
2-Month
4.24"
(107.70mm)
2.31"
(58.67mm)
1.93"
(49.03mm)
126th Driest
Driest since:
2012
3rd Wettest
Wettest to Date
1923
Jul–Sep 1915
3-Month
5.99"
(152.15mm)
3.59"
(91.19mm)
2.40"
(60.96mm)
124th Driest
Driest since:
1964
5th Wettest
Wettest since:
1923
Jun–Sep 1915
4-Month
8.74"
(222.00mm)
5.43"
(137.92mm)
3.31"
(84.08mm)
127th Driest
Driest since:
2012
2nd Wettest
Wettest to Date
1923
May–Sep 1915
5-Month
11.51"
(292.35mm)
7.64"
(194.06mm)
3.87"
(98.29mm)
128th Driest
Driest since:
1919
1st Wettest
Wettest to Date
1915
Apr–Sep 1915
6-Month
13.45"
(341.63mm)
9.42"
(239.27mm)
4.03"
(102.36mm)
127th Driest
Driest since:
2012
2nd Wettest
Wettest to Date
1941
Mar–Sep 1915
7-Month
14.67"
(372.62mm)
10.67"
(271.02mm)
4.00"
(101.60mm)
127th Driest
Driest since:
2012
2nd Wettest
Wettest to Date
1941
Feb–Sep 1915
8-Month
15.56"
(395.22mm)
11.63"
(295.40mm)
3.93"
(99.82mm)
126th Driest
Driest since:
2012
3rd Wettest
Wettest to Date
1945
Jan–Sep 1915
9-Month
16.47"
(418.34mm)
12.70"
(322.58mm)
3.77"
(95.76mm)
128th Driest
Driest since:
1919
1st Wettest
Wettest to Date
1915, 1945
Ties: 1945
Dec 1914–Sep 1915
10-Month
16.87"
(428.50mm)
13.71"
(348.23mm)
3.16"
(80.27mm)
119th Driest
Driest since:
1919
9th Wettest
Wettest to Date
1923
Nov 1914–Sep 1915
11-Month
16.99"
(431.55mm)
14.74"
(374.40mm)
2.25"
(57.15mm)
110th Driest
Driest since:
1919
18th Wettest
Wettest since:
1923
Oct 1914–Sep 1915
12-Month
18.48"
(469.39mm)
15.94"
(404.88mm)
2.54"
(64.51mm)
110th Driest
Driest since:
1919
18th Wettest
Wettest since:
1995
Apr 1914–Sep 1915
18-Month
26.67"
(677.42mm)
25.35"
(643.89mm)
1.32"
(33.53mm)
88th Driest
Driest since:
2021
40th Wettest
Wettest since:
1945
Oct 1913–Sep 1915
24-Month
32.95"
(836.93mm)
31.88"
(809.75mm)
1.07"
(27.18mm)
76th Driest
Driest since:
2002
51st Wettest
Wettest since:
1998
Oct 1912–Sep 1915
36-Month
47.37"
(1,203.20mm)
47.81"
(1,214.37mm)
-0.44"
(-11.17mm)
64th Driest
Driest since:
2002
62nd Wettest
Wettest since:
1997
Oct 1911–Sep 1915
48-Month
66.52"
(1,689.61mm)
63.72"
(1,618.49mm)
2.80"
(71.12mm)
87th Driest
Driest since:
2003
38th Wettest
Wettest since:
1998
Oct 1910–Sep 1915
60-Month
79.16"
(2,010.66mm)
79.56"
(2,020.82mm)
-0.40"
(-10.16mm)
64th Driest
Driest since:
2004
60th Wettest
Wettest since:
1999

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