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, September 1975

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  • Record Wettest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
September 1975
1-Month 		6.80"
(172.72mm)		 3.60"
(91.44mm)		 3.20"
(81.28mm)		 122nd Driest
Driest since:
 1941
7th Wettest
Wettest since:
 1935
Aug–Sep 1975
2-Month 		9.77"
(248.16mm)		 8.19"
(208.03mm)		 1.58"
(40.13mm)		 96th Driest
Driest since:
 2005
33rd Wettest
Wettest since:
 1928
Jul–Sep 1975
3-Month 		17.94"
(455.68mm)		 12.50"
(317.50mm)		 5.44"
(138.18mm)		 115th Driest
Driest since:
 1968
14th Wettest
Wettest since:
 1938
Jun–Sep 1975
4-Month 		22.59"
(573.79mm)		 16.14"
(409.96mm)		 6.45"
(163.83mm)		 118th Driest
Driest since:
 1968
11th Wettest
Wettest since:
 1938
May–Sep 1975
5-Month 		26.90"
(683.26mm)		 19.70"
(500.38mm)		 7.20"
(182.88mm)		 115th Driest
Driest since:
 1964
14th Wettest
Wettest since:
 1989
Apr–Sep 1975
6-Month 		30.64"
(778.26mm)		 23.18"
(588.77mm)		 7.46"
(189.49mm)		 114th Driest
Driest since:
 1986
15th Wettest
Wettest since:
 1989
Mar–Sep 1975
7-Month 		36.21"
(919.73mm)		 27.16"
(689.86mm)		 9.05"
(229.87mm)		 125th Driest
Driest since:
 1986
4th Wettest
Wettest since:
 1989
Feb–Sep 1975
8-Month 		39.26"
(997.20mm)		 30.20"
(767.08mm)		 9.06"
(230.12mm)		 123rd Driest
Driest since:
 1930
6th Wettest
Wettest since:
 1989
Jan–Sep 1975
9-Month 		44.24"
(1,123.70mm)		 33.69"
(855.73mm)		 10.55"
(267.97mm)		 125th Driest
Driest since:
 1930
4th Wettest
Wettest since:
 1989
Dec 1974–Sep 1975
10-Month 		49.16"
(1,248.66mm)		 37.15"
(943.61mm)		 12.01"
(305.05mm)		 125th Driest
Driest since:
 1986
3rd Wettest
Wettest since:
 1958
Nov 1974–Sep 1975
11-Month 		50.20"
(1,275.08mm)		 40.22"
(1,021.59mm)		 9.98"
(253.49mm)		 120th Driest
Driest since:
 1930
8th Wettest
Wettest since:
 1958
Oct 1974–Sep 1975
12-Month 		52.00"
(1,320.80mm)		 43.37"
(1,101.60mm)		 8.63"
(219.20mm)		 113th Driest
Driest since:
 1986
15th Wettest
Wettest since:
 2003
Apr 1974–Sep 1975
18-Month 		73.43"
(1,865.12mm)		 66.48"
(1,688.59mm)		 6.95"
(176.53mm)		 94th Driest
Driest since:
 1966
34th Wettest
Wettest since:
 2010
Oct 1973–Sep 1975
24-Month 		93.45"
(2,373.63mm)		 86.63"
(2,200.40mm)		 6.82"
(173.23mm)		 92nd Driest
Driest since:
 1966
35th Wettest
Wettest since:
 2004
Oct 1972–Sep 1975
36-Month 		144.48"
(3,669.79mm)		 129.92"
(3,299.97mm)		 14.56"
(369.82mm)		 112th Driest
Driest since:
 1966
14th Wettest
Wettest since:
 1935
Oct 1971–Sep 1975
48-Month 		193.93"
(4,925.82mm)		 173.15"
(4,398.01mm)		 20.78"
(527.81mm)		 117th Driest
Driest since:
 1966
8th Wettest
Wettest since:
 1936
Oct 1970–Sep 1975
60-Month 		241.50"
(6,134.10mm)		 216.34"
(5,495.04mm)		 25.16"
(639.06mm)		 118th Driest
Driest since:
 1966
6th Wettest
Wettest since:
 1937
Ties: 2020

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