Statewide Rankings

Statewide Data Info
Please note, Degree Days and Palmer Indices are not available for Alaska. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Wyoming

Precipitation Rankings, August 1999

View Period (Months):
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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
August 1999
1-Month
1.04"
(26.42mm)
1.07"
(27.18mm)
-0.03"
(-0.76mm)
73rd Driest
Driest since:
1944
56th Wettest
Wettest since:
1930
Ties: 1955
Jul–Aug 1999
2-Month
1.85"
(46.99mm)
2.35"
(59.69mm)
-0.50"
(-12.70mm)
35th Driest
Driest since:
2020
94th Wettest
Wettest since:
1930
Ties: 1954
Jun–Aug 1999
3-Month
4.02"
(102.11mm)
4.19"
(106.43mm)
-0.17"
(-4.32mm)
64th Driest
Driest since:
1924
65th Wettest
Wettest since:
1945
May–Aug 1999
4-Month
6.20"
(157.48mm)
6.40"
(162.56mm)
-0.20"
(-5.08mm)
60th Driest
Driest since:
1919
69th Wettest
Wettest since:
1908
Apr–Aug 1999
5-Month
9.51"
(241.55mm)
8.18"
(207.77mm)
1.33"
(33.78mm)
102nd Driest
Driest since:
1924
27th Wettest
Wettest since:
1941
Ties: 1964
Mar–Aug 1999
6-Month
10.26"
(260.60mm)
9.43"
(239.52mm)
0.83"
(21.08mm)
87th Driest
Driest since:
1919
42nd Wettest
Wettest since:
1941
Feb–Aug 1999
7-Month
11.43"
(290.32mm)
10.39"
(263.91mm)
1.04"
(26.41mm)
92nd Driest
Driest since:
1919
37th Wettest
Wettest since:
1941
Jan–Aug 1999
8-Month
12.65"
(321.31mm)
11.46"
(291.08mm)
1.19"
(30.23mm)
95th Driest
Driest since:
1919
34th Wettest
Wettest since:
1899
Dec 1998–Aug 1999
9-Month
13.49"
(342.65mm)
12.47"
(316.74mm)
1.02"
(25.91mm)
88th Driest
Driest since:
1919
40th Wettest
Wettest since:
1993
Nov 1998–Aug 1999
10-Month
14.70"
(373.38mm)
13.50"
(342.90mm)
1.20"
(30.48mm)
87th Driest
Driest since:
1919
41st Wettest
Wettest since:
1945
Oct 1998–Aug 1999
11-Month
17.51"
(444.75mm)
14.70"
(373.38mm)
2.81"
(71.37mm)
119th Driest
Driest since:
1919
9th Wettest
Wettest since:
1995
Sep 1998–Aug 1999
12-Month
18.85"
(478.79mm)
15.93"
(404.62mm)
2.92"
(74.17mm)
118th Driest
Driest since:
1934
10th Wettest
Wettest since:
1995
Mar 1998–Aug 1999
18-Month
29.91"
(759.71mm)
25.36"
(644.14mm)
4.55"
(115.57mm)
124th Driest
Driest since:
2013
4th Wettest
Wettest since:
1945
Ties: 1983
Sep 1997–Aug 1999
24-Month
36.76"
(933.70mm)
31.86"
(809.24mm)
4.90"
(124.46mm)
120th Driest
Driest since:
2002
7th Wettest
Wettest since:
2015
Ties: 1968
Sep 1996–Aug 1999
36-Month
56.51"
(1,435.35mm)
47.78"
(1,213.61mm)
8.73"
(221.74mm)
124th Driest
Driest since:
2002
2nd Wettest
Wettest since:
1997
Sep 1995–Aug 1999
48-Month
73.12"
(1,857.25mm)
63.68"
(1,617.47mm)
9.44"
(239.78mm)
123rd Driest
Driest since:
2003
2nd Wettest
Wettest since:
1998
Sep 1994–Aug 1999
60-Month
93.52"
(2,375.41mm)
79.53"
(2,020.06mm)
13.99"
(355.35mm)
123rd Driest
Driest since:
2004
1st Wettest
Wettest to Date
1999

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