Climate at a Glance

Statewide Rankings

Look up monthly rankings for 1-12, 18, 24, 36, 48, and 60-month time periods using the options below. Data and statistics are as of September 2021. For more information, please see Climatological Rankings.


Wyoming

Precipitation Rankings, September 1901

View Period (Months):All1234567891011121824364860
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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
September 1901
1-Month
0.70"
(17.78mm)
1.24"
(31.50mm)
-0.54"
(-13.72mm)
29th Driest Driest since: 1899 1979
99th Wettest Wettest since: 1900 1923
Ties: 1992
Aug–Sep 1901
2-Month
1.90"
(48.26mm)
2.31"
(58.67mm)
-0.41"
(-10.41mm)
53rd Driest Driest since: 1900 2012
75th Wettest Wettest since: 1896 1923
Jul–Sep 1901
3-Month
2.77"
(70.36mm)
3.59"
(91.19mm)
-0.82"
(-20.83mm)
41st Driest Driest since: 1900 1964
87th Wettest Wettest since: 1896 1923
Jun–Sep 1901
4-Month
4.74"
(120.40mm)
5.43"
(137.92mm)
-0.69"
(-17.52mm)
52nd Driest Driest since: 1900 2012
76th Wettest Wettest since: 1899 1923
May–Sep 1901
5-Month
7.35"
(186.69mm)
7.64"
(194.06mm)
-0.29"
(-7.37mm)
60th Driest Driest since: 1900 1919
68th Wettest Wettest since: 1898 1915
Ties: 1959
Apr–Sep 1901
6-Month
9.17"
(232.92mm)
9.42"
(239.27mm)
-0.25"
(-6.35mm)
60th Driest Driest since: 1900 2012
68th Wettest Wettest since: 1896 1941
Ties: 1975
Mar–Sep 1901
7-Month
10.34"
(262.64mm)
10.67"
(271.02mm)
-0.33"
(-8.38mm)
58th Driest Driest since: 1900 2012
70th Wettest Wettest since: 1899 1941
Feb–Sep 1901
8-Month
11.69"
(296.93mm)
11.63"
(295.40mm)
0.06"
(1.53mm)
71st Driest Driest since: 1900 2012
57th Wettest Wettest since: 1899 1945
Jan–Sep 1901
9-Month
12.43"
(315.72mm)
12.70"
(322.58mm)
-0.27"
(-6.86mm)
61st Driest Driest since: 1900 1919
67th Wettest Wettest since: 1899 1915, 1945
Dec 1900–Sep 1901
10-Month
13.10"
(332.74mm)
13.71"
(348.23mm)
-0.61"
(-15.49mm)
53rd Driest Driest since: 1900 1919
74th Wettest Wettest since: 1899 1923
Nov 1900–Sep 1901
11-Month
14.00"
(355.60mm)
14.74"
(374.40mm)
-0.74"
(-18.80mm)
50th Driest Driest since: 1900 1919
77th Wettest Wettest since: 1899 1923
Oct 1900–Sep 1901
12-Month
15.05"
(382.27mm)
15.94"
(404.88mm)
-0.89"
(-22.61mm)
50th Driest Driest since: 1900 1919
77th Wettest Wettest since: 1899 1995
Apr 1900–Sep 1901
18-Month
23.28"
(591.31mm)
25.35"
(643.89mm)
-2.07"
(-52.58mm)
36th Driest Driest since: 1900 2021
91st Wettest Wettest since: 1899 1945
Oct 1899–Sep 1901
24-Month
28.81"
(731.77mm)
31.88"
(809.75mm)
-3.07"
(-77.98mm)
26th Driest Driest since: 1898 2002
100th Wettest Wettest since: 1900 1998
Oct 1898–Sep 1901
36-Month
46.75"
(1,187.45mm)
47.81"
(1,214.37mm)
-1.06"
(-26.92mm)
48th Driest Driest since: 1899 2002
77th Wettest Wettest since: 1900 1997
Oct 1897–Sep 1901
48-Month
62.20"
(1,579.88mm)
63.72"
(1,618.49mm)
-1.52"
(-38.61mm)
52nd Driest Driest since: 1900 2003
72nd Wettest Wettest since: 1899 1998
Oct 1896–Sep 1901
60-Month
75.48"
(1,917.19mm)
79.56"
(2,020.82mm)
-4.08"
(-103.63mm)
35th Driest Driest to Date 2004
88th Wettest Wettest since: 1900 1999

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published October 2021, retrieved on October 18, 2021 from https://www.ncdc.noaa.gov/cag/