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, December 1998

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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
December 1998
1-Month 		0.84"
(21.34mm)		 1.01"
(25.65mm)		 -0.17"
(-4.31mm)		 50th Driest
Driest since:
 1986
79th Wettest
Wettest since:
 1964, 1996
Ties: 1911, 1926, 1984, 2011
Nov–Dec 1998
2-Month 		2.05"
(52.07mm)		 2.05"
(52.07mm)		 0.00"
(0.00mm)		 68th Driest
Driest since:
 1914
61st Wettest
Wettest since:
 1983
Ties: 1990
Oct–Dec 1998
3-Month 		4.86"
(123.44mm)		 3.24"
(82.30mm)		 1.62"
(41.14mm)		 123rd Driest
Driest since:
 1976
6th Wettest
Wettest since:
 1942
Sep–Dec 1998
4-Month 		6.20"
(157.48mm)		 4.48"
(113.79mm)		 1.72"
(43.69mm)		 117th Driest
Driest since:
 1952
12th Wettest
Wettest since:
 2013
Aug–Dec 1998
5-Month 		7.57"
(192.28mm)		 5.55"
(140.97mm)		 2.02"
(51.31mm)		 120th Driest
Driest since:
 1904
9th Wettest
Wettest since:
 1923
Jul–Dec 1998
6-Month 		9.31"
(236.47mm)		 6.83"
(173.48mm)		 2.48"
(62.99mm)		 120th Driest
Driest since:
 1939
9th Wettest
Wettest since:
 1923
Jun–Dec 1998
7-Month 		12.64"
(321.06mm)		 8.67"
(220.22mm)		 3.97"
(100.84mm)		 127th Driest
Driest since:
 1935
2nd Wettest
Wettest since:
 1923
May–Dec 1998
8-Month 		14.08"
(357.63mm)		 10.88"
(276.35mm)		 3.20"
(81.28mm)		 122nd Driest
Driest since:
 1900
7th Wettest
Wettest since:
 1923
Apr–Dec 1998
9-Month 		15.44"
(392.18mm)		 12.66"
(321.56mm)		 2.78"
(70.62mm)		 116th Driest
Driest since:
 1954
13th Wettest
Wettest since:
 1941
Mar–Dec 1998
10-Month 		17.26"
(438.40mm)		 13.91"
(353.31mm)		 3.35"
(85.09mm)		 119th Driest
Driest since:
 2012
10th Wettest
Wettest since:
 1941
Feb–Dec 1998
11-Month 		18.16"
(461.26mm)		 14.88"
(377.95mm)		 3.28"
(83.31mm)		 120th Driest
Driest since:
 2012
9th Wettest
Wettest since:
 1941
Jan–Dec 1998
12-Month 		19.57"
(497.08mm)		 15.94"
(404.88mm)		 3.63"
(92.20mm)		 123rd Driest
Driest since:
 2012
6th Wettest
Wettest since:
 1927
Jul 1997–Dec 1998
18-Month 		28.09"
(713.49mm)		 22.77"
(578.36mm)		 5.32"
(135.13mm)		 125th Driest
Driest since:
 1934
3rd Wettest
Wettest since:
 1927
Jan 1997–Dec 1998
24-Month 		37.55"
(953.77mm)		 31.87"
(809.50mm)		 5.68"
(144.27mm)		 122nd Driest
Driest since:
 2002
6th Wettest
Wettest since:
 1983
Jan 1996–Dec 1998
36-Month 		54.85"
(1,393.19mm)		 47.82"
(1,214.63mm)		 7.03"
(178.56mm)		 123rd Driest
Driest since:
 2002
4th Wettest
Wettest since:
 1947
Jan 1995–Dec 1998
48-Month 		75.13"
(1,908.30mm)		 63.72"
(1,618.49mm)		 11.41"
(289.81mm)		 125th Driest
Driest since:
 2003
1st Wettest
Wettest to Date
 1998
Jan 1994–Dec 1998
60-Month 		89.15"
(2,264.41mm)		 79.58"
(2,021.33mm)		 9.57"
(243.08mm)		 120th Driest
Driest since:
 1935
5th Wettest
Wettest since:
 1999

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