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 2021

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 2021
1-Month
0.82"
(20.83mm)
1.24"
(31.50mm)
-0.42"
(-10.67mm)
40th Driest Driest since: 2020 1979
88th Wettest Wettest since: 2020 1923
Ties: 2020
Aug–Sep 2021
2-Month
2.29"
(58.17mm)
2.31"
(58.67mm)
-0.02"
(-0.50mm)
69th Driest Driest since: 2020 2012
59th Wettest Wettest since: 2019 1923
Jul–Sep 2021
3-Month
3.35"
(85.09mm)
3.59"
(91.19mm)
-0.24"
(-6.10mm)
64th Driest Driest since: 2020 1964
64th Wettest Wettest since: 2019 1923
Jun–Sep 2021
4-Month
4.17"
(105.92mm)
5.43"
(137.92mm)
-1.26"
(-32.00mm)
32nd Driest Driest since: 2020 2012
96th Wettest Wettest since: 2019 1923
Ties: 1904, 2016
May–Sep 2021
5-Month
5.91"
(150.11mm)
7.64"
(194.06mm)
-1.73"
(-43.95mm)
23rd Driest Driest since: 2020 1919
105th Wettest Wettest since: 2019 1915
Apr–Sep 2021
6-Month
7.12"
(180.85mm)
9.42"
(239.27mm)
-2.30"
(-58.42mm)
20th Driest Driest since: 2020 2012
108th Wettest Wettest since: 2019 1941
Mar–Sep 2021
7-Month
8.42"
(213.87mm)
10.67"
(271.02mm)
-2.25"
(-57.15mm)
22nd Driest Driest since: 2020 2012
106th Wettest Wettest since: 2019 1941
Feb–Sep 2021
8-Month
9.71"
(246.63mm)
11.63"
(295.40mm)
-1.92"
(-48.77mm)
27th Driest Driest since: 2020 2012
101st Wettest Wettest since: 2019 1945
Jan–Sep 2021
9-Month
10.39"
(263.91mm)
12.70"
(322.58mm)
-2.31"
(-58.67mm)
25th Driest Driest since: 2020 1919
103rd Wettest Wettest since: 2019 1915, 1945
Dec 2020–Sep 2021
10-Month
11.10"
(281.94mm)
13.71"
(348.23mm)
-2.61"
(-66.29mm)
21st Driest Driest since: 2020 1919
106th Wettest Wettest since: 2019 1923
Nov 2020–Sep 2021
11-Month
11.79"
(299.47mm)
14.74"
(374.40mm)
-2.95"
(-74.93mm)
16th Driest Driest since: 2020 1919
111th Wettest Wettest since: 2019 1923
Oct 2020–Sep 2021
12-Month
12.80"
(325.12mm)
15.94"
(404.88mm)
-3.14"
(-79.76mm)
18th Driest Driest since: 2020 1919
109th Wettest Wettest since: 2019 1995
Apr 2020–Sep 2021
18-Month
18.85"
(478.79mm)
25.35"
(643.89mm)
-6.50"
(-165.10mm)
1st Driest Driest to Date 2021
126th Wettest Wettest since: 2020 1945
Oct 2019–Sep 2021
24-Month
25.18"
(639.57mm)
31.88"
(809.75mm)
-6.70"
(-170.18mm)
2nd Driest Driest since: 2002 2002
124th Wettest Wettest since: 2020 1998
Ties: 2001
Oct 2018–Sep 2021
36-Month
43.79"
(1,112.27mm)
47.81"
(1,214.37mm)
-4.02"
(-102.10mm)
24th Driest Driest since: 2007 2002
101st Wettest Wettest since: 2020 1997
Oct 2017–Sep 2021
48-Month
59.85"
(1,520.19mm)
63.72"
(1,618.49mm)
-3.87"
(-98.30mm)
31st Driest Driest since: 2007 2003
93rd Wettest Wettest since: 2020 1998
Oct 2016–Sep 2021
60-Month
79.69"
(2,024.13mm)
79.56"
(2,020.82mm)
0.13"
(3.31mm)
66th Driest Driest since: 2016 2004
57th Wettest Wettest since: 2020 1999

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published November 2021, retrieved on December 5, 2021 from https://www.ncdc.noaa.gov/cag/