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 March 2021. For more information, please see Climatological Rankings.


Delaware

Average Temperature Rankings, May 1999

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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Warmest/Coolest
Since
Record
May 1999
1-Month
63.0°F
(17.2°C)
62.1°F
(16.7°C)
0.9°F
(0.5°C)
76th Coolest Coolest since: 1997 1967
51st Warmest Warmest since: 1998 2004
Ties: 2006
Apr–May 1999
2-Month
58.2°F
(14.6°C)
57.1°F
(13.9°C)
1.1°F
(0.7°C)
89th Coolest Coolest since: 1997 1907
38th Warmest Warmest since: 1998 2019
Ties: 1954, 1974, 2008
Mar–May 1999
3-Month
52.9°F
(11.6°C)
52.3°F
(11.3°C)
0.6°F
(0.3°C)
75th Coolest Coolest since: 1997 1940
52nd Warmest Warmest since: 1998 2012
Ties: 1980, 2013
Feb–May 1999
4-Month
49.2°F
(9.6°C)
47.8°F
(8.8°C)
1.4°F
(0.8°C)
90th Coolest Coolest since: 1996 1934
37th Warmest Warmest since: 1998 2012
Ties: 1913, 2001
Jan–May 1999
5-Month
47.0°F
(8.3°C)
44.9°F
(7.2°C)
2.1°F
(1.1°C)
105th Coolest Coolest since: 1997 1940
22nd Warmest Warmest since: 1998 2012
Ties: 1946
Dec 1998–May 1999
6-Month
46.2°F
(7.9°C)
43.5°F
(6.4°C)
2.7°F
(1.5°C)
111th Coolest Coolest since: 1997 1904
15th Warmest Warmest since: 1998 2012
Ties: 2008
Nov 1998–May 1999
7-Month
46.3°F
(7.9°C)
43.8°F
(6.6°C)
2.5°F
(1.3°C)
109th Coolest Coolest since: 1997 1904
17th Warmest Warmest since: 1998 2012
Ties: 1913, 2010
Oct 1998–May 1999
8-Month
47.7°F
(8.7°C)
45.4°F
(7.4°C)
2.3°F
(1.3°C)
109th Coolest Coolest since: 1997 1904
17th Warmest Warmest since: 1998 2012
Ties: 1913, 1985
Sep 1998–May 1999
9-Month
50.3°F
(10.2°C)
47.8°F
(8.8°C)
2.5°F
(1.4°C)
112th Coolest Coolest since: 1997 1904, 1918
14th Warmest Warmest since: 1998 2012
Aug 1998–May 1999
10-Month
52.8°F
(11.6°C)
50.4°F
(10.2°C)
2.4°F
(1.4°C)
113th Coolest Coolest since: 1997 1904
13th Warmest Warmest since: 1998 2012
Ties: 1921
Jul 1998–May 1999
11-Month
54.9°F
(12.7°C)
52.7°F
(11.5°C)
2.2°F
(1.2°C)
111th Coolest Coolest since: 1997 1904
15th Warmest Warmest since: 1998 2012
Jun 1998–May 1999
12-Month
56.3°F
(13.5°C)
54.2°F
(12.3°C)
2.1°F
(1.2°C)
111th Coolest Coolest since: 1998 1904
15th Warmest Warmest since: 1998 2012
Ties: 1998
Dec 1997–May 1999
18-Month
53.5°F
(11.9°C)
50.6°F
(10.3°C)
2.9°F
(1.6°C)
118th Coolest Coolest since: 1998 1905
7th Warmest Warmest to Date 2017
Jun 1997–May 1999
24-Month
56.3°F
(13.5°C)
54.2°F
(12.3°C)
2.1°F
(1.2°C)
114th Coolest Coolest since: 1998 1905
11th Warmest Warmest since: 1991 2017
Ties: 2009, 2011
Jun 1996–May 1999
36-Month
55.8°F
(13.2°C)
54.2°F
(12.3°C)
1.6°F
(0.9°C)
106th Coolest Coolest since: 1998 1906
18th Warmest Warmest since: 1992 2018
Ties: 1991, 2016
Jun 1995–May 1999
48-Month
55.4°F
(13.0°C)
54.2°F
(12.3°C)
1.2°F
(0.7°C)
98th Coolest Coolest since: 1998 1907
25th Warmest Warmest since: 1993 2019
Jun 1994–May 1999
60-Month
55.5°F
(13.1°C)
54.1°F
(12.3°C)
1.4°F
(0.8°C)
101st Coolest Coolest since: 1998 1908
21st Warmest Warmest since: 1992 2020
Ties: 1992

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published April 2021, retrieved on April 19, 2021 from https://www.ncdc.noaa.gov/cag/