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.

Alaska

Precipitation Rankings, September 1940

View Period (Months):
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  • Record Wettest
Period Value 1925-2000
Mean
Anomaly Rank
(1925-2022)
Wettest/Driest
Since
Record
September 1940
1-Month
6.18"
(156.97mm)
4.57"
(116.08mm)
1.61"
(40.89mm)
91st Driest
Driest since:
1969
8th Wettest
Wettest since:
1925
Aug–Sep 1940
2-Month
10.64"
(270.26mm)
8.95"
(227.33mm)
1.69"
(42.93mm)
78th Driest
Driest since:
1941
21st Wettest
Wettest since:
2022
Jul–Sep 1940
3-Month
13.30"
(337.82mm)
12.23"
(310.64mm)
1.07"
(27.18mm)
70th Driest
Driest since:
1968
29th Wettest
Wettest since:
2022
Jun–Sep 1940
4-Month
15.30"
(388.62mm)
14.57"
(370.08mm)
0.73"
(18.54mm)
61st Driest
Driest since:
1968
38th Wettest
Wettest since:
2012
May–Sep 1940
5-Month
17.57"
(446.28mm)
16.68"
(423.67mm)
0.89"
(22.61mm)
61st Driest
Driest since:
1969
38th Wettest
Wettest since:
2012
Apr–Sep 1940
6-Month
19.27"
(489.46mm)
18.57"
(471.68mm)
0.70"
(17.78mm)
60th Driest
Driest since:
1969
39th Wettest
Wettest since:
1961
Mar–Sep 1940
7-Month
21.22"
(538.99mm)
20.80"
(528.32mm)
0.42"
(10.67mm)
53rd Driest
Driest since:
1969
46th Wettest
Wettest since:
2016
Ties: 2011
Feb–Sep 1940
8-Month
22.33"
(567.18mm)
23.12"
(587.25mm)
-0.79"
(-20.07mm)
32nd Driest
Driest since:
1969
67th Wettest
Wettest since:
1928
Jan–Sep 1940
9-Month
25.10"
(637.54mm)
25.85"
(656.59mm)
-0.75"
(-19.05mm)
35th Driest
Driest since:
1969
64th Wettest
Wettest since:
1928
Dec 1939–Sep 1940
10-Month
28.44"
(722.38mm)
28.92"
(734.57mm)
-0.48"
(-12.19mm)
36th Driest
Driest since:
1969
62nd Wettest
Wettest since:
2022
Nov 1939–Sep 1940
11-Month
31.57"
(801.88mm)
32.29"
(820.17mm)
-0.72"
(-18.29mm)
34th Driest
Driest since:
1969
64th Wettest
Wettest since:
1944
Oct 1939–Sep 1940
12-Month
36.65"
(930.91mm)
36.68"
(931.67mm)
-0.03"
(-0.76mm)
42nd Driest
Driest since:
1969
56th Wettest
Wettest since:
1944
Apr 1939–Sep 1940
18-Month
58.20"
(1,478.28mm)
55.22"
(1,402.59mm)
2.98"
(75.69mm)
69th Driest
Driest since:
1969
29th Wettest
Wettest since:
1944
Oct 1938–Sep 1940
24-Month
78.47"
(1,993.14mm)
73.25"
(1,860.55mm)
5.22"
(132.59mm)
76th Driest
Driest since:
1969
21st Wettest
Wettest since:
1930
Oct 1937–Sep 1940
36-Month
116.53"
(2,959.86mm)
109.82"
(2,789.43mm)
6.71"
(170.43mm)
74th Driest
Driest since:
1974
22nd Wettest
Wettest since:
1930
Oct 1936–Sep 1940
48-Month
160.01"
(4,064.25mm)
146.31"
(3,716.27mm)
13.70"
(347.98mm)
90th Driest
Driest since:
1969
5th Wettest
Wettest since:
1932
Oct 1935–Sep 1940
60-Month
193.58"
(4,916.93mm)
182.77"
(4,642.36mm)
10.81"
(274.57mm)
77th Driest
Driest since:
1972
17th Wettest
Wettest since:
1932

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