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 October 2021. For more information, please see Climatological Rankings.


Wyoming

Precipitation Rankings, September 2018

View Period (Months):All1234567891011121824364860
Download: xml csv json
  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Wettest/Driest
Since
Record
September 2018
1-Month
0.35"
(8.89mm)
1.24"
(31.50mm)
-0.89"
(-22.61mm)
6th Driest Driest since: 2010 1979
122nd Wettest Wettest since: 2017 1923
Ties: 2010
Aug–Sep 2018
2-Month
1.30"
(33.02mm)
2.31"
(58.67mm)
-1.01"
(-25.65mm)
13th Driest Driest since: 2012 2012
115th Wettest Wettest since: 2017 1923
Jul–Sep 2018
3-Month
2.62"
(66.55mm)
3.59"
(91.19mm)
-0.97"
(-24.64mm)
30th Driest Driest since: 2012 1964
98th Wettest Wettest since: 2017 1923
Ties: 1910
Jun–Sep 2018
4-Month
4.72"
(119.89mm)
5.43"
(137.92mm)
-0.71"
(-18.03mm)
50th Driest Driest since: 2016 2012
78th Wettest Wettest since: 2017 1923
Ties: 1895
May–Sep 2018
5-Month
7.81"
(198.37mm)
7.64"
(194.06mm)
0.17"
(4.31mm)
74th Driest Driest since: 2017 1919
54th Wettest Wettest since: 2015 1915
Apr–Sep 2018
6-Month
9.25"
(234.95mm)
9.42"
(239.27mm)
-0.17"
(-4.32mm)
66th Driest Driest since: 2016 2012
62nd Wettest Wettest since: 2017 1941
Ties: 1935
Mar–Sep 2018
7-Month
10.65"
(270.51mm)
10.67"
(271.02mm)
-0.02"
(-0.51mm)
67th Driest Driest since: 2013 2012
61st Wettest Wettest since: 2017 1941
Feb–Sep 2018
8-Month
11.87"
(301.50mm)
11.63"
(295.40mm)
0.24"
(6.10mm)
75th Driest Driest since: 2013 2012
53rd Wettest Wettest since: 2017 1945
Jan–Sep 2018
9-Month
12.77"
(324.36mm)
12.70"
(322.58mm)
0.07"
(1.78mm)
66th Driest Driest since: 2013 1919
62nd Wettest Wettest since: 2017 1915, 1945
Dec 2017–Sep 2018
10-Month
13.79"
(350.27mm)
13.71"
(348.23mm)
0.08"
(2.04mm)
68th Driest Driest since: 2013 1919
59th Wettest Wettest since: 2017 1923
Nov 2017–Sep 2018
11-Month
15.27"
(387.86mm)
14.74"
(374.40mm)
0.53"
(13.46mm)
73rd Driest Driest since: 2016 1919
54th Wettest Wettest since: 2017 1923
Oct 2017–Sep 2018
12-Month
16.06"
(407.92mm)
15.94"
(404.88mm)
0.12"
(3.04mm)
63rd Driest Driest since: 2013 1919
64th Wettest Wettest since: 2017 1995
Apr 2017–Sep 2018
18-Month
25.87"
(657.10mm)
25.35"
(643.89mm)
0.52"
(13.21mm)
68th Driest Driest since: 2013 2021
59th Wettest Wettest since: 2017 1945
Oct 2016–Sep 2018
24-Month
35.90"
(911.86mm)
31.88"
(809.75mm)
4.02"
(102.11mm)
112th Driest Driest since: 2016 2002
14th Wettest Wettest since: 2017 1998
Oct 2015–Sep 2018
36-Month
52.02"
(1,321.31mm)
47.81"
(1,214.37mm)
4.21"
(106.94mm)
107th Driest Driest since: 2016 2002
18th Wettest Wettest since: 2017 1997
Ties: 1908
Oct 2014–Sep 2018
48-Month
68.75"
(1,746.25mm)
63.72"
(1,618.49mm)
5.03"
(127.76mm)
105th Driest Driest since: 2016 2003
19th Wettest Wettest since: 2017 1998
Oct 2013–Sep 2018
60-Month
87.76"
(2,229.10mm)
79.56"
(2,020.82mm)
8.20"
(208.28mm)
113th Driest Driest since: 2017 2004
10th Wettest Wettest since: 1999 1999

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published November 2021, retrieved on December 3, 2021 from https://www.ncdc.noaa.gov/cag/