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


Wyoming

Precipitation Rankings, September 1991

View Period (Months):All1234567891011121824364860
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Wettest/Driest
Since
Record
September 1991
1-Month
1.32"
(33.53mm)
1.24"
(31.50mm)
0.08"
(2.03mm)
78th Driest Driest since: 1990 1979
49th Wettest Wettest since: 1989 1923
Aug–Sep 1991
2-Month
2.32"
(58.93mm)
2.31"
(58.67mm)
0.01"
(0.26mm)
72nd Driest Driest since: 1990 2012
55th Wettest Wettest since: 1989 1923
Jul–Sep 1991
3-Month
3.32"
(84.33mm)
3.59"
(91.19mm)
-0.27"
(-6.86mm)
61st Driest Driest since: 1988 1964
66th Wettest Wettest since: 1990 1923
Ties: 1922, 1976
Jun–Sep 1991
4-Month
5.56"
(141.22mm)
5.43"
(137.92mm)
0.13"
(3.30mm)
76th Driest Driest since: 1990 2012
51st Wettest Wettest since: 1986 1923
Ties: 1977, 1999
May–Sep 1991
5-Month
9.26"
(235.20mm)
7.64"
(194.06mm)
1.62"
(41.14mm)
105th Driest Driest since: 1990 1919
22nd Wettest Wettest since: 1982 1915
Apr–Sep 1991
6-Month
11.57"
(293.88mm)
9.42"
(239.27mm)
2.15"
(54.61mm)
111th Driest Driest since: 1990 2012
16th Wettest Wettest since: 1982 1941
Mar–Sep 1991
7-Month
12.87"
(326.90mm)
10.67"
(271.02mm)
2.20"
(55.88mm)
109th Driest Driest since: 1990 2012
18th Wettest Wettest since: 1982 1941
Feb–Sep 1991
8-Month
13.41"
(340.61mm)
11.63"
(295.40mm)
1.78"
(45.21mm)
101st Driest Driest since: 1990 2012
26th Wettest Wettest since: 1986 1945
Ties: 1965
Jan–Sep 1991
9-Month
14.01"
(355.85mm)
12.70"
(322.58mm)
1.31"
(33.27mm)
90th Driest Driest since: 1990 1919
37th Wettest Wettest since: 1986 1915, 1945
Dec 1990–Sep 1991
10-Month
14.83"
(376.68mm)
13.71"
(348.23mm)
1.12"
(28.45mm)
83rd Driest Driest since: 1990 1919
43rd Wettest Wettest since: 1986 1923
Nov 1990–Sep 1991
11-Month
16.06"
(407.92mm)
14.74"
(374.40mm)
1.32"
(33.52mm)
87th Driest Driest since: 1990 1919
39th Wettest Wettest since: 1986 1923
Oct 1990–Sep 1991
12-Month
17.20"
(436.88mm)
15.94"
(404.88mm)
1.26"
(32.00mm)
85th Driest Driest since: 1990 1919
41st Wettest Wettest since: 1986 1995
Apr 1990–Sep 1991
18-Month
26.28"
(667.51mm)
25.35"
(643.89mm)
0.93"
(23.62mm)
78th Driest Driest since: 1990 1911
48th Wettest Wettest since: 1984 1945
Oct 1989–Sep 1991
24-Month
32.17"
(817.12mm)
31.88"
(809.75mm)
0.29"
(7.37mm)
65th Driest Driest since: 1990 2002
60th Wettest Wettest since: 1987 1998
Oct 1988–Sep 1991
36-Month
46.84"
(1,189.74mm)
47.81"
(1,214.37mm)
-0.97"
(-24.63mm)
50th Driest Driest since: 1990 2002
74th Wettest Wettest since: 1987 1997
Oct 1987–Sep 1991
48-Month
58.59"
(1,488.19mm)
63.72"
(1,618.49mm)
-5.13"
(-130.30mm)
20th Driest Driest since: 1990 2003
103rd Wettest Wettest since: 1989 1998
Ties: 1921
Oct 1986–Sep 1991
60-Month
74.11"
(1,882.39mm)
79.56"
(2,020.82mm)
-5.45"
(-138.43mm)
26th Driest Driest since: 1989 2004
96th Wettest Wettest since: 1990 1999

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published September 2021, retrieved on September 23, 2021 from https://www.ncdc.noaa.gov/cag/