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 2009

View Period (Months):All1234567891011121824364860
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  • Record Driest
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  • Top 1/10
  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Wettest/Driest
Since
Record
September 2009
1-Month
0.63"
(16.00mm)
1.24"
(31.50mm)
-0.61"
(-15.50mm)
24th Driest Driest since: 1987 1979
104th Wettest Wettest since: 2008 1923
Ties: 1987
Aug–Sep 2009
2-Month
1.81"
(45.97mm)
2.31"
(58.67mm)
-0.50"
(-12.70mm)
49th Driest Driest since: 2001 2012
79th Wettest Wettest since: 2008 1923
Jul–Sep 2009
3-Month
3.26"
(82.80mm)
3.59"
(91.19mm)
-0.33"
(-8.39mm)
57th Driest Driest since: 2008 1964
71st Wettest Wettest since: 2007 1923
Jun–Sep 2009
4-Month
6.48"
(164.59mm)
5.43"
(137.92mm)
1.05"
(26.67mm)
106th Driest Driest since: 2008 2012
22nd Wettest Wettest since: 1998 1923
May–Sep 2009
5-Month
7.74"
(196.60mm)
7.64"
(194.06mm)
0.10"
(2.54mm)
71st Driest Driest since: 2007 1919
57th Wettest Wettest since: 2008 1915
Ties: 1999
Apr–Sep 2009
6-Month
10.24"
(260.10mm)
9.42"
(239.27mm)
0.82"
(20.83mm)
89th Driest Driest since: 2008 2012
39th Wettest Wettest since: 1999 1941
Mar–Sep 2009
7-Month
11.84"
(300.74mm)
10.67"
(271.02mm)
1.17"
(29.72mm)
95th Driest Driest since: 2008 2012
33rd Wettest Wettest since: 1998 1941
Ties: 1938, 2015
Feb–Sep 2009
8-Month
12.48"
(316.99mm)
11.63"
(295.40mm)
0.85"
(21.59mm)
83rd Driest Driest since: 2008 2012
45th Wettest Wettest since: 1999 1945
Jan–Sep 2009
9-Month
13.82"
(351.03mm)
12.70"
(322.58mm)
1.12"
(28.45mm)
87th Driest Driest since: 2008 1919
41st Wettest Wettest since: 1999 1915, 1945
Dec 2008–Sep 2009
10-Month
15.02"
(381.51mm)
13.71"
(348.23mm)
1.31"
(33.28mm)
90th Driest Driest since: 2008 1919
37th Wettest Wettest since: 1999 1923
Nov 2008–Sep 2009
11-Month
15.94"
(404.88mm)
14.74"
(374.40mm)
1.20"
(30.48mm)
85th Driest Driest since: 2008 1919
42nd Wettest Wettest since: 1999 1923
Oct 2008–Sep 2009
12-Month
17.17"
(436.12mm)
15.94"
(404.88mm)
1.23"
(31.24mm)
85th Driest Driest since: 2008 1919
42nd Wettest Wettest since: 1999 1995
Apr 2008–Sep 2009
18-Month
26.54"
(674.12mm)
25.35"
(643.89mm)
1.19"
(30.23mm)
86th Driest Driest since: 2008 2021
41st Wettest Wettest since: 1999 1945
Oct 2007–Sep 2009
24-Month
33.62"
(853.95mm)
31.88"
(809.75mm)
1.74"
(44.20mm)
86th Driest Driest since: 2008 2002
40th Wettest Wettest since: 1999 1998
Oct 2006–Sep 2009
36-Month
48.09"
(1,221.49mm)
47.81"
(1,214.37mm)
0.28"
(7.12mm)
71st Driest Driest since: 2008 2002
54th Wettest Wettest since: 2000 1997
Oct 2005–Sep 2009
48-Month
61.54"
(1,563.12mm)
63.72"
(1,618.49mm)
-2.18"
(-55.37mm)
45th Driest Driest since: 2008 2003
79th Wettest Wettest since: 2001 1998
Oct 2004–Sep 2009
60-Month
77.08"
(1,957.83mm)
79.56"
(2,020.82mm)
-2.48"
(-62.99mm)
44th Driest Driest since: 2008 2004
79th Wettest Wettest since: 2001 1999

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published October 2021, retrieved on October 21, 2021 from https://www.ncdc.noaa.gov/cag/