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, May 1930

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Period Value 1925-2000
Mean		 Anomaly Rank
(1925-2022)		 Wettest/Driest
Since		 Record
May 1930
1-Month 		1.91"
(48.51mm)		 2.11"
(53.59mm)		 -0.20"
(-5.08mm)		 34th Driest
Driest since:
 2010
65th Wettest
Wettest since:
 1944
Ties: 1945, 2007
Apr–May 1930
2-Month 		3.87"
(98.30mm)		 4.00"
(101.60mm)		 -0.13"
(-3.30mm)		 42nd Driest
Driest since:
 2022
57th Wettest
Wettest since:
 1998
Mar–May 1930
3-Month 		7.69"
(195.33mm)		 6.23"
(158.24mm)		 1.46"
(37.09mm)		 91st Driest
Driest since:
 2011
8th Wettest
Wettest since:
 1941
Feb–May 1930
4-Month 		9.84"
(249.94mm)		 8.55"
(217.17mm)		 1.29"
(32.77mm)		 83rd Driest
Driest since:
 2014
16th Wettest
Wettest since:
 1929
Jan–May 1930
5-Month 		11.41"
(289.81mm)		 11.28"
(286.51mm)		 0.13"
(3.30mm)		 50th Driest
Driest since:
 1969
49th Wettest
Wettest since:
 1929
Dec 1929–May 1930
6-Month 		13.16"
(334.26mm)		 14.38"
(365.25mm)		 -1.22"
(-30.99mm)		 26th Driest
Driest since:
 1969
72nd Wettest
Wettest since:
 1929
Nov 1929–May 1930
7-Month 		18.72"
(475.49mm)		 17.76"
(451.10mm)		 0.96"
(24.39mm)		 64th Driest
Driest since:
 1969
34th Wettest
Wettest since:
 1929
Oct 1929–May 1930
8-Month 		24.37"
(619.00mm)		 22.15"
(562.61mm)		 2.22"
(56.39mm)		 78th Driest
Driest since:
 1969
20th Wettest
Wettest since:
 1937
Sep 1929–May 1930
9-Month 		29.07"
(738.38mm)		 26.70"
(678.18mm)		 2.37"
(60.20mm)		 74th Driest
Driest since:
 1969
24th Wettest
Wettest since:
 1926
Aug 1929–May 1930
10-Month 		33.18"
(842.77mm)		 31.07"
(789.18mm)		 2.11"
(53.59mm)		 70th Driest
Driest since:
 1969
28th Wettest
Wettest since:
 1926
Ties: 2020
Jul 1929–May 1930
11-Month 		37.45"
(951.23mm)		 34.34"
(872.24mm)		 3.11"
(78.99mm)		 81st Driest
Driest since:
 1969
17th Wettest
Wettest since:
 1926
Jun 1929–May 1930
12-Month 		39.24"
(996.70mm)		 36.68"
(931.67mm)		 2.56"
(65.03mm)		 74th Driest
Driest since:
 1969
24th Wettest
Wettest since:
 1926
Dec 1928–May 1930
18-Month 		58.94"
(1,497.08mm)		 50.91"
(1,293.11mm)		 8.03"
(203.97mm)		 94th Driest
Driest since:
 1969
3rd Wettest
Wettest since:
 1929
Jun 1928–May 1930
24-Month 		84.75"
(2,152.65mm)		 73.19"
(1,859.03mm)		 11.56"
(293.62mm)		 96th Driest
Driest since:
 1970
1st Wettest
Wettest to Date
 1930
Jun 1927–May 1930
36-Month 		120.95"
(3,072.13mm)		 109.71"
(2,786.63mm)		 11.24"
(285.50mm)		 92nd Driest
Driest since:
 1971
4th Wettest
Wettest to Date
 1931
Jun 1926–May 1930
48-Month 		155.93"
(3,960.62mm)		 146.24"
(3,714.50mm)		 9.69"
(246.12mm)		 80th Driest
Driest since:
 1972
15th Wettest
Wettest since:
 1932
Jun 1925–May 1930
60-Month 		201.75"
(5,124.45mm)		 182.72"
(4,641.09mm)		 19.03"
(483.36mm)		 91st Driest
Driest since:
 1973
3rd Wettest
Wettest to Date
 1932

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