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 1981

View Period (Months):
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
September 1981
1-Month
4.11"
(104.39mm)
3.60"
(91.44mm)
0.51"
(12.95mm)
86th Driest
Driest since:
1941
43rd Wettest
Wettest since:
1935
Aug–Sep 1981
2-Month
7.59"
(192.79mm)
8.19"
(208.03mm)
-0.60"
(-15.24mm)
57th Driest
Driest since:
2005
72nd Wettest
Wettest since:
1928
Jul–Sep 1981
3-Month
10.01"
(254.25mm)
12.51"
(317.75mm)
-2.50"
(-63.50mm)
40th Driest
Driest since:
1968
89th Wettest
Wettest since:
1938
Ties: 1941
Jun–Sep 1981
4-Month
13.95"
(354.33mm)
16.14"
(409.96mm)
-2.19"
(-55.63mm)
45th Driest
Driest since:
1968
84th Wettest
Wettest since:
1938
May–Sep 1981
5-Month
18.86"
(479.04mm)
19.70"
(500.38mm)
-0.84"
(-21.34mm)
57th Driest
Driest since:
1964
72nd Wettest
Wettest since:
1989
Ties: 2008
Apr–Sep 1981
6-Month
23.15"
(588.01mm)
23.18"
(588.77mm)
-0.03"
(-0.76mm)
70th Driest
Driest since:
1986
59th Wettest
Wettest since:
1989
Mar–Sep 1981
7-Month
24.92"
(632.97mm)
27.16"
(689.86mm)
-2.24"
(-56.89mm)
41st Driest
Driest since:
1986
88th Wettest
Wettest since:
1989
Feb–Sep 1981
8-Month
28.48"
(723.39mm)
30.20"
(767.08mm)
-1.72"
(-43.69mm)
46th Driest
Driest since:
1930
83rd Wettest
Wettest since:
1989
Jan–Sep 1981
9-Month
29.00"
(736.60mm)
33.69"
(855.73mm)
-4.69"
(-119.13mm)
25th Driest
Driest since:
1930
104th Wettest
Wettest since:
1989
Dec 1980–Sep 1981
10-Month
29.79"
(756.67mm)
37.15"
(943.61mm)
-7.36"
(-186.94mm)
14th Driest
Driest since:
1986
114th Wettest
Wettest since:
1958
Nov 1980–Sep 1981
11-Month
32.41"
(823.21mm)
40.22"
(1,021.59mm)
-7.81"
(-198.38mm)
12th Driest
Driest since:
1930
116th Wettest
Wettest since:
1958
Oct 1980–Sep 1981
12-Month
38.18"
(969.77mm)
43.37"
(1,101.60mm)
-5.19"
(-131.83mm)
26th Driest
Driest since:
1986
102nd Wettest
Wettest since:
2003
Apr 1980–Sep 1981
18-Month
57.53"
(1,461.26mm)
66.48"
(1,688.59mm)
-8.95"
(-227.33mm)
16th Driest
Driest since:
1966
112th Wettest
Wettest since:
2010
Oct 1979–Sep 1981
24-Month
77.60"
(1,971.04mm)
86.63"
(2,200.40mm)
-9.03"
(-229.36mm)
20th Driest
Driest since:
1966
107th Wettest
Wettest since:
2004
Oct 1978–Sep 1981
36-Month
132.84"
(3,374.14mm)
129.92"
(3,299.97mm)
2.92"
(74.17mm)
67th Driest
Driest since:
1966
59th Wettest
Wettest since:
1935
Oct 1977–Sep 1981
48-Month
186.09"
(4,726.69mm)
173.15"
(4,398.01mm)
12.94"
(328.68mm)
106th Driest
Driest since:
1966
19th Wettest
Wettest since:
1936
Oct 1976–Sep 1981
60-Month
222.02"
(5,639.31mm)
216.34"
(5,495.04mm)
5.68"
(144.27mm)
71st Driest
Driest since:
1966
53rd Wettest
Wettest since:
1937
Ties: 1999

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