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 2009

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 2009
1-Month
5.18"
(131.57mm)
3.60"
(91.44mm)
1.58"
(40.13mm)
105th Driest
Driest since:
1941
24th Wettest
Wettest since:
1935
Aug–Sep 2009
2-Month
13.41"
(340.61mm)
8.19"
(208.03mm)
5.22"
(132.58mm)
122nd Driest
Driest since:
2005
7th Wettest
Wettest since:
1928
Jul–Sep 2009
3-Month
15.96"
(405.38mm)
12.51"
(317.75mm)
3.45"
(87.63mm)
101st Driest
Driest since:
1968
28th Wettest
Wettest since:
1938
Jun–Sep 2009
4-Month
21.56"
(547.62mm)
16.14"
(409.96mm)
5.42"
(137.66mm)
112th Driest
Driest since:
1968
17th Wettest
Wettest since:
1938
May–Sep 2009
5-Month
26.57"
(674.88mm)
19.70"
(500.38mm)
6.87"
(174.50mm)
113th Driest
Driest since:
1964
16th Wettest
Wettest since:
1989
Apr–Sep 2009
6-Month
31.87"
(809.50mm)
23.18"
(588.77mm)
8.69"
(220.73mm)
121st Driest
Driest since:
1986
8th Wettest
Wettest since:
1989
Mar–Sep 2009
7-Month
34.23"
(869.44mm)
27.16"
(689.86mm)
7.07"
(179.58mm)
114th Driest
Driest since:
1986
15th Wettest
Wettest since:
1989
Feb–Sep 2009
8-Month
34.67"
(880.62mm)
30.20"
(767.08mm)
4.47"
(113.54mm)
100th Driest
Driest since:
1930
29th Wettest
Wettest since:
1989
Jan–Sep 2009
9-Month
37.03"
(940.56mm)
33.69"
(855.73mm)
3.34"
(84.83mm)
95th Driest
Driest since:
1930
34th Wettest
Wettest since:
1989
Dec 2008–Sep 2009
10-Month
42.28"
(1,073.91mm)
37.15"
(943.61mm)
5.13"
(130.30mm)
100th Driest
Driest since:
1986
28th Wettest
Wettest since:
1958
Nov 2008–Sep 2009
11-Month
47.01"
(1,194.05mm)
40.22"
(1,021.59mm)
6.79"
(172.46mm)
109th Driest
Driest since:
1930
19th Wettest
Wettest since:
1958
Oct 2008–Sep 2009
12-Month
48.84"
(1,240.54mm)
43.37"
(1,101.60mm)
5.47"
(138.94mm)
97th Driest
Driest since:
1986
31st Wettest
Wettest since:
2003
Apr 2008–Sep 2009
18-Month
71.04"
(1,804.42mm)
66.48"
(1,688.59mm)
4.56"
(115.83mm)
84th Driest
Driest since:
1966
44th Wettest
Wettest since:
2010
Oct 2007–Sep 2009
24-Month
90.55"
(2,299.97mm)
86.63"
(2,200.40mm)
3.92"
(99.57mm)
74th Driest
Driest since:
1966
53rd Wettest
Wettest since:
2004
Ties: 2001
Oct 2006–Sep 2009
36-Month
131.15"
(3,331.21mm)
129.92"
(3,299.97mm)
1.23"
(31.24mm)
60th Driest
Driest since:
1966
66th Wettest
Wettest since:
1935
Oct 2005–Sep 2009
48-Month
180.04"
(4,573.02mm)
173.15"
(4,398.01mm)
6.89"
(175.01mm)
78th Driest
Driest since:
1966
47th Wettest
Wettest since:
1936
Oct 2004–Sep 2009
60-Month
220.94"
(5,611.88mm)
216.34"
(5,495.04mm)
4.60"
(116.84mm)
69th Driest
Driest since:
1966
55th Wettest
Wettest since:
1937

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