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

Average Temperature Rankings, September 2020

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  • Top 1/3
  • Top 1/10
  • Record Warmest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Warmest/Coolest
Since		 Record
September 2020
1-Month 		68.7°F
(20.4°C)		 67.4°F
(19.7°C)		 1.3°F
(0.7°C)		 87th Coolest
Coolest since:
 1917
42nd Warmest
Warmest since:
 2018
Ties: 1942, 1989
Aug–Sep 2020
2-Month 		72.9°F
(22.7°C)		 70.5°F
(21.4°C)		 2.4°F
(1.3°C)		 108th Coolest
Coolest since:
 1927, 1963
21st Warmest
Warmest since:
 2018
Ties: 1898, 1930, 1970, 2003
Jul–Sep 2020
3-Month 		75.5°F
(24.2°C)		 72.2°F
(22.3°C)		 3.3°F
(1.9°C)		 121st Coolest
Coolest since:
 1909
8th Warmest
Warmest since:
 2016
Jun–Sep 2020
4-Month 		75.1°F
(23.9°C)		 71.9°F
(22.2°C)		 3.2°F
(1.7°C)		 123rd Coolest
Coolest since:
 1927
6th Warmest
Warmest since:
 2010
Ties: 2005
May–Sep 2020
5-Month 		72.2°F
(22.3°C)		 69.9°F
(21.1°C)		 2.3°F
(1.2°C)		 117th Coolest
Coolest since:
 1924, 1927
12th Warmest
Warmest since:
 2010
Ties: 1991
Apr–Sep 2020
6-Month 		68.8°F
(20.4°C)		 66.9°F
(19.4°C)		 1.9°F
(1.0°C)		 111th Coolest
Coolest since:
 1907
18th Warmest
Warmest since:
 2010
Ties: 1980, 2005
Mar–Sep 2020
7-Month 		66.0°F
(18.9°C)		 63.4°F
(17.4°C)		 2.6°F
(1.5°C)		 119th Coolest
Coolest since:
 1924
10th Warmest
Warmest since:
 2010
Ties: 1991, 2017, 2022
Feb–Sep 2020
8-Month 		63.0°F
(17.2°C)		 59.8°F
(15.4°C)		 3.2°F
(1.8°C)		 120th Coolest
Coolest since:
 1907
9th Warmest
Warmest since:
 2012
Jan–Sep 2020
9-Month 		60.5°F
(15.8°C)		 56.9°F
(13.8°C)		 3.6°F
(2.0°C)		 125th Coolest
Coolest since:
 1940
4th Warmest
Warmest since:
 2012
Ties: 2019
Dec 2019–Sep 2020
10-Month 		58.4°F
(14.7°C)		 54.8°F
(12.7°C)		 3.6°F
(2.0°C)		 122nd Coolest
Coolest since:
 1904
6th Warmest
Warmest since:
 2012
Nov 2019–Sep 2020
11-Month 		57.1°F
(13.9°C)		 54.0°F
(12.2°C)		 3.1°F
(1.7°C)		 120th Coolest
Coolest since:
 1904
8th Warmest
Warmest since:
 2012
Ties: 2021
Oct 2019–Sep 2020
12-Month 		57.4°F
(14.1°C)		 54.1°F
(12.3°C)		 3.3°F
(1.8°C)		 121st Coolest
Coolest since:
 1904
7th Warmest
Warmest since:
 2012
Apr 2019–Sep 2020
18-Month 		62.0°F
(16.7°C)		 58.4°F
(14.7°C)		 3.6°F
(2.0°C)		 125th Coolest
Coolest since:
 1904, 1918
3rd Warmest
Warmest since:
 2012
Oct 2018–Sep 2020
24-Month 		57.5°F
(14.2°C)		 54.1°F
(12.3°C)		 3.4°F
(1.9°C)		 124th Coolest
Coolest since:
 1905
3rd Warmest
Warmest since:
 2017
Oct 2017–Sep 2020
36-Month 		57.4°F
(14.1°C)		 54.2°F
(12.3°C)		 3.2°F
(1.8°C)		 122nd Coolest
Coolest since:
 1905, 1918
4th Warmest
Warmest since:
 2018
Ties: 2012
Oct 2016–Sep 2020
48-Month 		57.5°F
(14.2°C)		 54.2°F
(12.3°C)		 3.3°F
(1.9°C)		 123rd Coolest
Coolest since:
 1905
2nd Warmest
Warmest since:
 2019
Oct 2015–Sep 2020
60-Month 		57.6°F
(14.2°C)		 54.1°F
(12.3°C)		 3.5°F
(1.9°C)		 123rd Coolest
Coolest since:
 1908
1st Warmest
Warmest to Date
 2020

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