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


Wyoming

Precipitation Rankings, September 1999

View Period (Months):All1234567891011121824364860
Download: xml csv json
  • Record Driest
  • Bottom 1/10
  • Bottom 1/3
  • Normal
  • Top 1/3
  • Top 1/10
  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Wettest/Driest
Since
Record
September 1999
1-Month
1.54"
(39.12mm)
1.24"
(31.50mm)
0.30"
(7.62mm)
92nd Driest Driest since: 1998 1979
35th Wettest Wettest since: 1997 1923
Aug–Sep 1999
2-Month
2.58"
(65.53mm)
2.31"
(58.67mm)
0.27"
(6.86mm)
84th Driest Driest since: 1996 2012
43rd Wettest Wettest since: 1998 1923
Ties: 1980
Jul–Sep 1999
3-Month
3.39"
(86.11mm)
3.59"
(91.19mm)
-0.20"
(-5.08mm)
66th Driest Driest since: 1996 1964
61st Wettest Wettest since: 1998 1923
Jun–Sep 1999
4-Month
5.56"
(141.22mm)
5.43"
(137.92mm)
0.13"
(3.30mm)
76th Driest Driest since: 1996 2012
51st Wettest Wettest since: 1998 1923
Ties: 1977, 1991
May–Sep 1999
5-Month
7.74"
(196.60mm)
7.64"
(194.06mm)
0.10"
(2.54mm)
70th Driest Driest since: 1996 1919
57th Wettest Wettest since: 1998 1915
Ties: 2009
Apr–Sep 1999
6-Month
11.05"
(280.67mm)
9.42"
(239.27mm)
1.63"
(41.40mm)
102nd Driest Driest since: 1998 2012
25th Wettest Wettest since: 1997 1941
Mar–Sep 1999
7-Month
11.80"
(299.72mm)
10.67"
(271.02mm)
1.13"
(28.70mm)
90th Driest Driest since: 1996 2012
37th Wettest Wettest since: 1998 1941
Feb–Sep 1999
8-Month
12.97"
(329.44mm)
11.63"
(295.40mm)
1.34"
(34.04mm)
92nd Driest Driest since: 1996 2012
35th Wettest Wettest since: 1998 1945
Jan–Sep 1999
9-Month
14.19"
(360.43mm)
12.70"
(322.58mm)
1.49"
(37.85mm)
96th Driest Driest since: 1996 1919
31st Wettest Wettest since: 1998 1915, 1945
Dec 1998–Sep 1999
10-Month
15.03"
(381.76mm)
13.71"
(348.23mm)
1.32"
(33.53mm)
90th Driest Driest since: 1996 1919
36th Wettest Wettest since: 1998 1923
Nov 1998–Sep 1999
11-Month
16.24"
(412.50mm)
14.74"
(374.40mm)
1.50"
(38.10mm)
95th Driest Driest since: 1998 1919
31st Wettest Wettest since: 1997 1923
Ties: 1907
Oct 1998–Sep 1999
12-Month
19.05"
(483.87mm)
15.94"
(404.88mm)
3.11"
(78.99mm)
115th Driest Driest since: 1998 1919
11th Wettest Wettest since: 1997 1995
Apr 1998–Sep 1999
18-Month
29.63"
(752.60mm)
25.35"
(643.89mm)
4.28"
(108.71mm)
121st Driest Driest since: 1998 1911
5th Wettest Wettest since: 1945 1945
Oct 1997–Sep 1999
24-Month
36.58"
(929.13mm)
31.88"
(809.75mm)
4.70"
(119.38mm)
119th Driest Driest since: 1997 2002
6th Wettest Wettest since: 1998 1998
Oct 1996–Sep 1999
36-Month
56.84"
(1,443.74mm)
47.81"
(1,214.37mm)
9.03"
(229.37mm)
122nd Driest Driest since: 1998 2002
2nd Wettest Wettest since: 1997 1997
Oct 1995–Sep 1999
48-Month
72.93"
(1,852.42mm)
63.72"
(1,618.49mm)
9.21"
(233.93mm)
120th Driest Driest since: 1997 2003
3rd Wettest Wettest since: 1998 1998
Oct 1994–Sep 1999
60-Month
94.28"
(2,394.71mm)
79.56"
(2,020.82mm)
14.72"
(373.89mm)
121st Driest Driest since: 1998 2004
1st Wettest Wettest to Date 1999

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published February 2021, retrieved on March 7, 2021 from https://www.ncdc.noaa.gov/cag/