Climate at a Glance

Statewide Rankings

Look up monthly rankings for 1-12, 18, 24, 36, 48, and 60-month time periods using the options below. Data and statistics are as of October 2021. For more information, please see Climatological Rankings.


Delaware

Precipitation Rankings, September 1999

View Period (Months):All1234567891011121824364860
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Wettest/Driest
Since
Record
September 1999
1-Month
10.37"
(263.40mm)
3.60"
(91.44mm)
6.77"
(171.96mm)
126th Driest Driest since: 1998 1941
2nd Wettest Wettest since: 1935 1935
Aug–Sep 1999
2-Month
14.89"
(378.21mm)
8.19"
(208.03mm)
6.70"
(170.18mm)
124th Driest Driest since: 1998 2005
4th Wettest Wettest since: 1967 1928
Jul–Sep 1999
3-Month
17.10"
(434.34mm)
12.50"
(317.50mm)
4.60"
(116.84mm)
109th Driest Driest since: 1998 1968
19th Wettest Wettest since: 1989 1938
Jun–Sep 1999
4-Month
19.21"
(487.93mm)
16.14"
(409.96mm)
3.07"
(77.97mm)
95th Driest Driest since: 1998 1968
33rd Wettest Wettest since: 1996 1938
May–Sep 1999
5-Month
20.75"
(527.05mm)
19.70"
(500.38mm)
1.05"
(26.67mm)
79th Driest Driest since: 1998 1964
49th Wettest Wettest since: 1996 1989
Apr–Sep 1999
6-Month
23.63"
(600.20mm)
23.18"
(588.77mm)
0.45"
(11.43mm)
76th Driest Driest since: 1998 1986
52nd Wettest Wettest since: 1996 1989
Mar–Sep 1999
7-Month
28.39"
(721.11mm)
27.16"
(689.86mm)
1.23"
(31.25mm)
81st Driest Driest since: 1998 1986
47th Wettest Wettest since: 1996 1989
Feb–Sep 1999
8-Month
31.12"
(790.45mm)
30.20"
(767.08mm)
0.92"
(23.37mm)
75th Driest Driest since: 1998 1930
53rd Wettest Wettest since: 1996 1989
Ties: 1931
Jan–Sep 1999
9-Month
36.96"
(938.78mm)
33.69"
(855.73mm)
3.27"
(83.05mm)
93rd Driest Driest since: 1998 1930
35th Wettest Wettest since: 1996 1989
Dec 1998–Sep 1999
10-Month
39.71"
(1,008.63mm)
37.15"
(943.61mm)
2.56"
(65.02mm)
84th Driest Driest since: 1998 1986
43rd Wettest Wettest since: 1996 1958
Ties: 2014
Nov 1998–Sep 1999
11-Month
40.93"
(1,039.62mm)
40.22"
(1,021.59mm)
0.71"
(18.03mm)
68th Driest Driest since: 1997 1930
59th Wettest Wettest since: 1998 1958
Oct 1998–Sep 1999
12-Month
43.28"
(1,099.31mm)
43.37"
(1,101.60mm)
-0.09"
(-2.29mm)
64th Driest Driest since: 1995 1986
63rd Wettest Wettest since: 1998 2003
Apr 1998–Sep 1999
18-Month
61.63"
(1,565.40mm)
66.48"
(1,688.59mm)
-4.85"
(-123.19mm)
40th Driest Driest since: 1995 1966
87th Wettest Wettest since: 1998 2010
Oct 1997–Sep 1999
24-Month
90.72"
(2,304.29mm)
86.63"
(2,200.40mm)
4.09"
(103.89mm)
75th Driest Driest since: 1996 1966
51st Wettest Wettest since: 1998 2004
Oct 1996–Sep 1999
36-Month
134.07"
(3,405.38mm)
129.92"
(3,299.97mm)
4.15"
(105.41mm)
71st Driest Driest since: 1997 1966
54th Wettest Wettest since: 1998 1935
Oct 1995–Sep 1999
48-Month
190.09"
(4,828.29mm)
173.15"
(4,398.01mm)
16.94"
(430.28mm)
112th Driest Driest since: 1998 1966
12th Wettest Wettest since: 1975 1936
Oct 1994–Sep 1999
60-Month
222.02"
(5,639.31mm)
216.34"
(5,495.04mm)
5.68"
(144.27mm)
71st Driest Driest since: 1995 1966
52nd Wettest Wettest since: 1998 1937
Ties: 1981

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published November 2021, retrieved on November 27, 2021 from https://www.ncdc.noaa.gov/cag/