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, October 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
October 1999
1-Month
0.39"
(9.91mm)
1.20"
(30.48mm)
-0.81"
(-20.57mm)
8th Driest
Driest since:
1933
121st Wettest
Wettest since:
1994
Sep–Oct 1999
2-Month
1.93"
(49.02mm)
2.44"
(61.98mm)
-0.51"
(-12.96mm)
39th Driest
Driest since:
1952
90th Wettest
Wettest since:
2013
Aug–Oct 1999
3-Month
2.97"
(75.44mm)
3.51"
(89.15mm)
-0.54"
(-13.71mm)
46th Driest
Driest since:
1958
83rd Wettest
Wettest since:
1923
Jul–Oct 1999
4-Month
3.78"
(96.01mm)
4.79"
(121.67mm)
-1.01"
(-25.66mm)
29th Driest
Driest since:
1964
100th Wettest
Wettest since:
1923
Jun–Oct 1999
5-Month
5.95"
(151.13mm)
6.62"
(168.15mm)
-0.67"
(-17.02mm)
48th Driest
Driest since:
1988
81st Wettest
Wettest since:
1923
Ties: 1955
May–Oct 1999
6-Month
8.13"
(206.50mm)
8.84"
(224.54mm)
-0.71"
(-18.04mm)
51st Driest
Driest since:
2012
78th Wettest
Wettest since:
1923
Apr–Oct 1999
7-Month
11.44"
(290.58mm)
10.61"
(269.49mm)
0.83"
(21.09mm)
86th Driest
Driest since:
2012
43rd Wettest
Wettest since:
1941
Mar–Oct 1999
8-Month
12.19"
(309.63mm)
11.86"
(301.24mm)
0.33"
(8.39mm)
75th Driest
Driest since:
2012
54th Wettest
Wettest since:
1941
Ties: 1904
Feb–Oct 1999
9-Month
13.36"
(339.34mm)
12.83"
(325.88mm)
0.53"
(13.46mm)
82nd Driest
Driest since:
2012
47th Wettest
Wettest since:
1941
Jan–Oct 1999
10-Month
14.58"
(370.33mm)
13.89"
(352.81mm)
0.69"
(17.52mm)
81st Driest
Driest since:
2012
48th Wettest
Wettest since:
1923
Dec 1998–Oct 1999
11-Month
15.42"
(391.67mm)
14.90"
(378.46mm)
0.52"
(13.21mm)
75th Driest
Driest since:
2012
53rd Wettest
Wettest since:
1923
Nov 1998–Oct 1999
12-Month
16.63"
(422.40mm)
15.94"
(404.88mm)
0.69"
(17.52mm)
76th Driest
Driest since:
1960
52nd Wettest
Wettest since:
1923
May 1998–Oct 1999
18-Month
28.66"
(727.96mm)
24.75"
(628.65mm)
3.91"
(99.31mm)
119th Driest
Driest since:
1934
9th Wettest
Wettest since:
1927
Nov 1997–Oct 1999
24-Month
35.59"
(903.99mm)
31.86"
(809.24mm)
3.73"
(94.75mm)
113th Driest
Driest since:
2002
14th Wettest
Wettest since:
1998
Nov 1996–Oct 1999
36-Month
55.80"
(1,417.32mm)
47.81"
(1,214.37mm)
7.99"
(202.95mm)
123rd Driest
Driest since:
2002
3rd Wettest
Wettest since:
1947
Nov 1995–Oct 1999
48-Month
71.83"
(1,824.48mm)
63.72"
(1,618.49mm)
8.11"
(205.99mm)
119th Driest
Driest since:
2003
6th Wettest
Wettest since:
1998
Nov 1994–Oct 1999
60-Month
91.80"
(2,331.72mm)
79.57"
(2,021.08mm)
12.23"
(310.64mm)
123rd Driest
Driest since:
1935
1st Wettest
Wettest to Date
1999

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