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, July 1999

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  • Record Wettest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
July 1999
1-Month 		0.81"
(20.57mm)		 1.28"
(32.51mm)		 -0.47"
(-11.94mm)		 20th Driest
Driest since:
 2003
109th Wettest
Wettest since:
 1937
Jun–Jul 1999
2-Month 		2.98"
(75.69mm)		 3.12"
(79.25mm)		 -0.14"
(-3.56mm)		 66th Driest
Driest since:
 1933
63rd Wettest
Wettest since:
 1967
May–Jul 1999
3-Month 		5.16"
(131.06mm)		 5.33"
(135.38mm)		 -0.17"
(-4.32mm)		 63rd Driest
Driest since:
 1919
66th Wettest
Wettest since:
 1908
Ties: 1984
Apr–Jul 1999
4-Month 		8.47"
(215.14mm)		 7.11"
(180.59mm)		 1.36"
(34.55mm)		 106th Driest
Driest since:
 1919
23rd Wettest
Wettest since:
 1995
Mar–Jul 1999
5-Month 		9.22"
(234.19mm)		 8.36"
(212.34mm)		 0.86"
(21.85mm)		 90th Driest
Driest since:
 1919
39th Wettest
Wettest since:
 1995
Feb–Jul 1999
6-Month 		10.39"
(263.91mm)		 9.32"
(236.73mm)		 1.07"
(27.18mm)		 97th Driest
Driest since:
 1919
32nd Wettest
Wettest since:
 1995
Jan–Jul 1999
7-Month 		11.61"
(294.89mm)		 10.39"
(263.91mm)		 1.22"
(30.98mm)		 95th Driest
Driest since:
 1919
34th Wettest
Wettest since:
 1995
Dec 1998–Jul 1999
8-Month 		12.45"
(316.23mm)		 11.40"
(289.56mm)		 1.05"
(26.67mm)		 91st Driest
Driest since:
 1919
37th Wettest
Wettest since:
 2011
Nov 1998–Jul 1999
9-Month 		13.66"
(346.96mm)		 12.43"
(315.72mm)		 1.23"
(31.24mm)		 92nd Driest
Driest since:
 1919
36th Wettest
Wettest since:
 2011
Oct 1998–Jul 1999
10-Month 		16.47"
(418.34mm)		 13.63"
(346.20mm)		 2.84"
(72.14mm)		 121st Driest
Driest since:
 1919
7th Wettest
Wettest since:
 1995
Sep 1998–Jul 1999
11-Month 		17.81"
(452.37mm)		 14.86"
(377.44mm)		 2.95"
(74.93mm)		 120th Driest
Driest since:
 1934
8th Wettest
Wettest since:
 1995
Aug 1998–Jul 1999
12-Month 		19.18"
(487.17mm)		 15.93"
(404.62mm)		 3.25"
(82.55mm)		 120th Driest
Driest since:
 1919
8th Wettest
Wettest since:
 1995
Feb 1998–Jul 1999
18-Month 		29.77"
(756.16mm)		 25.26"
(641.60mm)		 4.51"
(114.56mm)		 124th Driest
Driest since:
 2013
4th Wettest
Wettest since:
 1928
Aug 1997–Jul 1999
24-Month 		37.47"
(951.74mm)		 31.86"
(809.24mm)		 5.61"
(142.50mm)		 124th Driest
Driest since:
 2002
3rd Wettest
Wettest since:
 1928
Aug 1996–Jul 1999
36-Month 		56.22"
(1,427.99mm)		 47.77"
(1,213.36mm)		 8.45"
(214.63mm)		 125th Driest
Driest since:
 2002
1st Wettest
Wettest to Date
 1999
Aug 1995–Jul 1999
48-Month 		72.73"
(1,847.34mm)		 63.66"
(1,616.96mm)		 9.07"
(230.38mm)		 123rd Driest
Driest since:
 2003
2nd Wettest
Wettest since:
 1998
Aug 1994–Jul 1999
60-Month 		93.30"
(2,369.82mm)		 79.51"
(2,019.55mm)		 13.79"
(350.27mm)		 123rd Driest
Driest since:
 2004
1st Wettest
Wettest to Date
 1999

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