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 1921

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
September 1921
1-Month
2.34"
(59.44mm)
3.60"
(91.44mm)
-1.26"
(-32.00mm)
35th Driest
Driest since:
1941
94th Wettest
Wettest since:
1935
Aug–Sep 1921
2-Month
5.32"
(135.13mm)
8.19"
(208.03mm)
-2.87"
(-72.90mm)
19th Driest
Driest since:
2005
110th Wettest
Wettest since:
1928
Jul–Sep 1921
3-Month
8.69"
(220.73mm)
12.51"
(317.75mm)
-3.82"
(-97.02mm)
19th Driest
Driest since:
1968
110th Wettest
Wettest since:
1938
Jun–Sep 1921
4-Month
10.57"
(268.48mm)
16.14"
(409.96mm)
-5.57"
(-141.48mm)
5th Driest
Driest since:
1968
124th Wettest
Wettest since:
1938
Ties: 2007
May–Sep 1921
5-Month
14.21"
(360.93mm)
19.70"
(500.38mm)
-5.49"
(-139.45mm)
13th Driest
Driest since:
1964
116th Wettest
Wettest since:
1989
Apr–Sep 1921
6-Month
17.63"
(447.80mm)
23.18"
(588.77mm)
-5.55"
(-140.97mm)
13th Driest
Driest since:
1986
116th Wettest
Wettest since:
1989
Ties: 2007, 2010
Mar–Sep 1921
7-Month
20.15"
(511.81mm)
27.16"
(689.86mm)
-7.01"
(-178.05mm)
10th Driest
Driest since:
1986
119th Wettest
Wettest since:
1989
Ties: 1995
Feb–Sep 1921
8-Month
23.34"
(592.84mm)
30.20"
(767.08mm)
-6.86"
(-174.24mm)
11th Driest
Driest since:
1930
118th Wettest
Wettest since:
1989
Jan–Sep 1921
9-Month
25.73"
(653.54mm)
33.69"
(855.73mm)
-7.96"
(-202.19mm)
6th Driest
Driest since:
1930
123rd Wettest
Wettest since:
1989
Dec 1920–Sep 1921
10-Month
29.21"
(741.93mm)
37.15"
(943.61mm)
-7.94"
(-201.68mm)
9th Driest
Driest since:
1986
119th Wettest
Wettest since:
1958
Nov 1920–Sep 1921
11-Month
34.54"
(877.32mm)
40.22"
(1,021.59mm)
-5.68"
(-144.27mm)
23rd Driest
Driest since:
1930
105th Wettest
Wettest since:
1958
Oct 1920–Sep 1921
12-Month
35.81"
(909.57mm)
43.37"
(1,101.60mm)
-7.56"
(-192.03mm)
13th Driest
Driest since:
1986
115th Wettest
Wettest since:
2003
Apr 1920–Sep 1921
18-Month
62.56"
(1,589.02mm)
66.48"
(1,688.59mm)
-3.92"
(-99.57mm)
45th Driest
Driest since:
1966
83rd Wettest
Wettest since:
2010
Oct 1919–Sep 1921
24-Month
84.13"
(2,136.90mm)
86.63"
(2,200.40mm)
-2.50"
(-63.50mm)
49th Driest
Driest since:
1966
78th Wettest
Wettest since:
2004
Oct 1918–Sep 1921
36-Month
133.85"
(3,399.79mm)
129.92"
(3,299.97mm)
3.93"
(99.82mm)
70th Driest
Driest since:
1966
56th Wettest
Wettest since:
1935
Oct 1917–Sep 1921
48-Month
175.04"
(4,446.02mm)
173.15"
(4,398.01mm)
1.89"
(48.01mm)
54th Driest
Driest since:
1966
71st Wettest
Wettest since:
1936
Oct 1916–Sep 1921
60-Month
219.26"
(5,569.20mm)
216.34"
(5,495.04mm)
2.92"
(74.16mm)
61st Driest
Driest since:
1966
63rd Wettest
Wettest since:
1937

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