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.

Delaware

Precipitation Rankings, June 1939

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  • Record Wettest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
June 1939
1-Month 		3.36"
(85.34mm)		 3.64"
(92.46mm)		 -0.28"
(-7.12mm)		 58th Driest
Driest since:
 1988
71st Wettest
Wettest since:
 2006
May–Jun 1939
2-Month 		4.09"
(103.89mm)		 7.19"
(182.63mm)		 -3.10"
(-78.74mm)		 8th Driest
Driest since:
 1964
121st Wettest
Wettest since:
 1948
Apr–Jun 1939
3-Month 		9.85"
(250.19mm)		 10.67"
(271.02mm)		 -0.82"
(-20.83mm)		 51st Driest
Driest since:
 1986
78th Wettest
Wettest since:
 1948
Ties: 1971
Mar–Jun 1939
4-Month 		15.08"
(383.03mm)		 14.65"
(372.11mm)		 0.43"
(10.92mm)		 71st Driest
Driest since:
 1986
58th Wettest
Wettest since:
 1983
Feb–Jun 1939
5-Month 		20.57"
(522.48mm)		 17.70"
(449.58mm)		 2.87"
(72.90mm)		 102nd Driest
Driest since:
 1976
27th Wettest
Wettest since:
 1983
Jan–Jun 1939
6-Month 		24.33"
(617.98mm)		 21.19"
(538.23mm)		 3.14"
(79.75mm)		 102nd Driest
Driest since:
 2012
27th Wettest
Wettest since:
 1948
Dec 1938–Jun 1939
7-Month 		27.12"
(688.85mm)		 24.65"
(626.11mm)		 2.47"
(62.74mm)		 92nd Driest
Driest since:
 1986
36th Wettest
Wettest since:
 1948, 1979
Ties: 2010
Nov 1938–Jun 1939
8-Month 		30.38"
(771.65mm)		 27.71"
(703.83mm)		 2.67"
(67.82mm)		 94th Driest
Driest since:
 1977
34th Wettest
Wettest since:
 1948
Oct 1938–Jun 1939
9-Month 		32.90"
(835.66mm)		 30.87"
(784.10mm)		 2.03"
(51.56mm)		 84th Driest
Driest since:
 1986
44th Wettest
Wettest since:
 2003
Sep 1938–Jun 1939
10-Month 		40.75"
(1,035.05mm)		 34.46"
(875.28mm)		 6.29"
(159.77mm)		 105th Driest
Driest since:
 2002
23rd Wettest
Wettest since:
 2003
Aug 1938–Jun 1939
11-Month 		43.77"
(1,111.76mm)		 39.04"
(991.62mm)		 4.73"
(120.14mm)		 96th Driest
Driest since:
 1985
32nd Wettest
Wettest since:
 1972
Jul 1938–Jun 1939
12-Month 		54.49"
(1,384.05mm)		 43.33"
(1,100.58mm)		 11.16"
(283.47mm)		 123rd Driest
Driest since:
 1969
5th Wettest
Wettest to Date
 2021
Jan 1938–Jun 1939
18-Month 		73.97"
(1,878.84mm)		 64.47"
(1,637.54mm)		 9.50"
(241.30mm)		 110th Driest
Driest since:
 1931
18th Wettest
Wettest since:
 2019
Jul 1937–Jun 1939
24-Month 		98.50"
(2,501.90mm)		 86.54"
(2,198.12mm)		 11.96"
(303.78mm)		 112th Driest
Driest since:
 1931
15th Wettest
Wettest since:
 2019
Jul 1936–Jun 1939
36-Month 		149.56"
(3,798.82mm)		 129.87"
(3,298.70mm)		 19.69"
(500.12mm)		 119th Driest
Driest since:
 1966
7th Wettest
Wettest since:
 1937
Jul 1935–Jun 1939
48-Month 		203.91"
(5,179.31mm)		 173.13"
(4,397.50mm)		 30.78"
(781.81mm)		 123rd Driest
Driest since:
 1966
2nd Wettest
Wettest since:
 1937
Jul 1934–Jun 1939
60-Month 		253.03"
(6,426.96mm)		 216.27"
(5,493.26mm)		 36.76"
(933.70mm)		 123rd Driest
Driest since:
 1967
1st Wettest
Wettest to Date
 1939

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