Climate at a Glance

City 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 September 2019. For more information, please see Climatological Rankings.


Wilmington, Delaware

Average Temperature Rankings, May 1991

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  • Record Warmest
Period Value 1981-2010
Mean
Anomaly Rank
(1948-2019)
Warmest/Coolest
Since
Record
May 1991
1-Month
68.8°F
(20.4°C)
62.8°F
(17.1°C)
6.0°F
(3.3°C)
72nd Coolest Coolest since: 1990 1967
1st Warmest Warmest to Date 1991
Apr–May 1991
2-Month
61.6°F
(16.4°C)
58.0°F
(14.4°C)
3.6°F
(2.0°C)
71st Coolest Coolest since: 1990 1967
2nd Warmest Warmest since: 1985 2019
Ties: 1985
Mar–May 1991
3-Month
55.9°F
(13.3°C)
53.0°F
(11.7°C)
2.9°F
(1.6°C)
67th Coolest Coolest since: 1990 1967
4th Warmest Warmest since: 1985 2012
Feb–May 1991
4-Month
51.8°F
(11.0°C)
48.6°F
(9.2°C)
3.2°F
(1.8°C)
69th Coolest Coolest since: 1990 1978
2nd Warmest Warmest since: 1985 2012
Ties: 1985
Jan–May 1991
5-Month
48.2°F
(9.0°C)
45.3°F
(7.4°C)
2.9°F
(1.6°C)
67th Coolest Coolest since: 1990 1978
4th Warmest Warmest since: 1990 2012
Ties: 1990
Dec 1990–May 1991
6-Month
47.0°F
(8.3°C)
44.0°F
(6.7°C)
3.0°F
(1.6°C)
66th Coolest Coolest since: 1990 1978
4th Warmest Warmest to Date 2012
Nov 1990–May 1991
7-Month
47.1°F
(8.4°C)
44.3°F
(6.8°C)
2.8°F
(1.6°C)
65th Coolest Coolest since: 1990 1978
4th Warmest Warmest to Date 2012
Ties: 2017
Oct 1990–May 1991
8-Month
48.7°F
(9.3°C)
45.8°F
(7.7°C)
2.9°F
(1.6°C)
66th Coolest Coolest since: 1990 1978
3rd Warmest Warmest to Date 2012
Sep 1990–May 1991
9-Month
50.6°F
(10.3°C)
48.2°F
(9.0°C)
2.4°F
(1.3°C)
64th Coolest Coolest since: 1990 1978
5th Warmest Warmest to Date 2012
Aug 1990–May 1991
10-Month
53.0°F
(11.7°C)
50.9°F
(10.5°C)
2.1°F
(1.2°C)
64th Coolest Coolest since: 1990 1978
5th Warmest Warmest to Date 2012
Jul 1990–May 1991
11-Month
55.2°F
(12.9°C)
53.3°F
(11.8°C)
1.9°F
(1.1°C)
65th Coolest Coolest since: 1990 1963
4th Warmest Warmest to Date 2012
Ties: 2002
Jun 1990–May 1991
12-Month
56.6°F
(13.7°C)
54.9°F
(12.7°C)
1.7°F
(1.0°C)
64th Coolest Coolest since: 1990 1963, 1978
5th Warmest Warmest to Date 2012
Ties: 2006
Dec 1989–May 1991
18-Month
52.5°F
(11.4°C)
51.2°F
(10.7°C)
1.3°F
(0.7°C)
61st Coolest Coolest since: 1990 1979
5th Warmest Warmest to Date 2017
Jun 1989–May 1991
24-Month
55.7°F
(13.2°C)
54.8°F
(12.7°C)
0.9°F
(0.5°C)
55th Coolest Coolest since: 1990 1978
10th Warmest Warmest to Date 2017
Jun 1988–May 1991
36-Month
55.2°F
(12.9°C)
54.8°F
(12.7°C)
0.4°F
(0.2°C)
46th Coolest Coolest since: 1990 1979
15th Warmest Warmest since: 1976 2018
Ties: 1993, 1999
Jun 1987–May 1991
48-Month
54.9°F
(12.7°C)
54.8°F
(12.7°C)
0.1°F
(0.0°C)
38th Coolest Coolest since: 1990 1964, 1966, 1968, 1970, 1980
19th Warmest Warmest since: 1976 2019
Ties: 1974, 2003
Jun 1986–May 1991
60-Month
54.7°F
(12.6°C)
54.7°F
(12.6°C)
0.0°F
(0.0°C)
31st Coolest Coolest since: 1985 1967, 1970
23rd Warmest Warmest since: 1977 2019
Ties: 1977

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: City Time Series, published October 2019, retrieved on October 16, 2019 from https://www.ncdc.noaa.gov/cag/