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, July 1940

View Period (Months):
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
July 1940
1-Month
2.56"
(65.02mm)
4.31"
(109.47mm)
-1.75"
(-44.45mm)
24th Driest
Driest since:
1974
105th Wettest
Wettest since:
1938
Jun–Jul 1940
2-Month
4.33"
(109.98mm)
7.95"
(201.93mm)
-3.62"
(-91.95mm)
4th Driest
Driest since:
1949
125th Wettest
Wettest since:
2013
May–Jul 1940
3-Month
9.66"
(245.36mm)
11.50"
(292.10mm)
-1.84"
(-46.74mm)
36th Driest
Driest since:
1964
93rd Wettest
Wettest since:
1989
Apr–Jul 1940
4-Month
15.17"
(385.32mm)
14.98"
(380.49mm)
0.19"
(4.83mm)
61st Driest
Driest since:
1986
68th Wettest
Wettest since:
1989
Mar–Jul 1940
5-Month
19.14"
(486.16mm)
18.96"
(481.58mm)
0.18"
(4.58mm)
68th Driest
Driest since:
1986
61st Wettest
Wettest since:
1989
Feb–Jul 1940
6-Month
22.17"
(563.12mm)
22.01"
(559.05mm)
0.16"
(4.07mm)
69th Driest
Driest since:
1986
60th Wettest
Wettest since:
1989
Ties: 1899
Jan–Jul 1940
7-Month
24.67"
(626.62mm)
25.50"
(647.70mm)
-0.83"
(-21.08mm)
61st Driest
Driest since:
1977
68th Wettest
Wettest since:
1989
Dec 1939–Jul 1940
8-Month
26.21"
(665.73mm)
28.96"
(735.58mm)
-2.75"
(-69.85mm)
37th Driest
Driest since:
1986
91st Wettest
Wettest since:
1958
Nov 1939–Jul 1940
9-Month
27.78"
(705.61mm)
32.02"
(813.31mm)
-4.24"
(-107.70mm)
30th Driest
Driest since:
1977
98th Wettest
Wettest since:
1984
Oct 1939–Jul 1940
10-Month
32.13"
(816.10mm)
35.18"
(893.57mm)
-3.05"
(-77.47mm)
34th Driest
Driest since:
2002
94th Wettest
Wettest since:
2003
Sep 1939–Jul 1940
11-Month
34.72"
(881.89mm)
38.77"
(984.76mm)
-4.05"
(-102.87mm)
28th Driest
Driest since:
2002
100th Wettest
Wettest since:
2003
Aug 1939–Jul 1940
12-Month
42.56"
(1,081.02mm)
43.35"
(1,101.09mm)
-0.79"
(-20.07mm)
59th Driest
Driest since:
1985
69th Wettest
Wettest since:
2003
Feb 1939–Jul 1940
18-Month
66.37"
(1,685.80mm)
65.29"
(1,658.37mm)
1.08"
(27.43mm)
68th Driest
Driest since:
1931
60th Wettest
Wettest since:
1984
Aug 1938–Jul 1940
24-Month
89.57"
(2,275.08mm)
86.54"
(2,198.12mm)
3.03"
(76.96mm)
74th Driest
Driest since:
1931
53rd Wettest
Wettest since:
2004
Aug 1937–Jul 1940
36-Month
140.80"
(3,576.32mm)
129.85"
(3,298.19mm)
10.95"
(278.13mm)
105th Driest
Driest since:
1966
21st Wettest
Wettest since:
2005
Aug 1936–Jul 1940
48-Month
191.52"
(4,864.61mm)
173.06"
(4,395.72mm)
18.46"
(468.89mm)
116th Driest
Driest since:
1966
9th Wettest
Wettest since:
1938
Aug 1935–Jul 1940
60-Month
245.28"
(6,230.11mm)
216.21"
(5,491.73mm)
29.07"
(738.38mm)
119th Driest
Driest since:
1966
5th Wettest
Wettest since:
1938

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