Statewide Rankings

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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, May 1990

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
May 1990 1-Month	61.3°F (16.3°C)	62.1°F (16.7°C)	-0.8°F (-0.4°C)	46th Coolest	Coolest since: 1983	1967
	61.3°F (16.3°C)	62.1°F (16.7°C)	-0.8°F (-0.4°C)	83rd Warmest	Warmest since: 1989	2004
	Ties: 1931, 1972
Apr–May 1990 2-Month	57.4°F (14.1°C)	57.1°F (13.9°C)	0.3°F (0.2°C)	64th Coolest	Coolest since: 1989	1907
	57.4°F (14.1°C)	57.1°F (13.9°C)	0.3°F (0.2°C)	65th Warmest	Warmest since: 1986	2019
	Ties: 1905, 1914, 1939, 1970, 2016
Mar–May 1990 3-Month	53.9°F (12.2°C)	52.3°F (11.3°C)	1.6°F (0.9°C)	93rd Coolest	Coolest since: 1989	1940
	53.9°F (12.2°C)	52.3°F (11.3°C)	1.6°F (0.9°C)	36th Warmest	Warmest since: 1986	2012
	Ties: 1957
Feb–May 1990 4-Month	51.0°F (10.6°C)	47.8°F (8.8°C)	3.2°F (1.8°C)	117th Coolest	Coolest since: 1989	1934
	51.0°F (10.6°C)	47.8°F (8.8°C)	3.2°F (1.8°C)	12th Warmest	Warmest since: 1976	2012
	Ties: 2020
Jan–May 1990 5-Month	49.1°F (9.5°C)	44.9°F (7.2°C)	4.2°F (2.3°C)	123rd Coolest	Coolest since: 1989	1940
Jan–May 1990 5-Month	49.1°F (9.5°C)	44.9°F (7.2°C)	4.2°F (2.3°C)	6th Warmest	Warmest to Date	2012
Dec 1989–May 1990 6-Month	45.2°F (7.3°C)	43.5°F (6.4°C)	1.7°F (0.9°C)	94th Coolest	Coolest since: 1989	1904
Dec 1989–May 1990 6-Month	45.2°F (7.3°C)	43.5°F (6.4°C)	1.7°F (0.9°C)	34th Warmest	Warmest since: 1985	2012
Nov 1989–May 1990 7-Month	45.3°F (7.4°C)	43.8°F (6.6°C)	1.5°F (0.8°C)	96th Coolest	Coolest since: 1989	1904
	45.3°F (7.4°C)	43.8°F (6.6°C)	1.5°F (0.8°C)	32nd Warmest	Warmest since: 1985	2012
	Ties: 1939, 2009
Oct 1989–May 1990 8-Month	46.8°F (8.2°C)	45.3°F (7.4°C)	1.5°F (0.8°C)	95th Coolest	Coolest since: 1989	1904
	46.8°F (8.2°C)	45.3°F (7.4°C)	1.5°F (0.8°C)	33rd Warmest	Warmest since: 1986	2012
	Ties: 1950, 1983, 2011
Sep 1989–May 1990 9-Month	49.3°F (9.6°C)	47.9°F (8.8°C)	1.4°F (0.8°C)	98th Coolest	Coolest since: 1989	1904, 1918
	49.3°F (9.6°C)	47.9°F (8.8°C)	1.4°F (0.8°C)	30th Warmest	Warmest since: 1986	2012
	Ties: 1986
Aug 1989–May 1990 10-Month	51.7°F (10.9°C)	50.4°F (10.2°C)	1.3°F (0.7°C)	98th Coolest	Coolest since: 1989	1904
	51.7°F (10.9°C)	50.4°F (10.2°C)	1.3°F (0.7°C)	30th Warmest	Warmest since: 1986	2012
	Ties: 1953, 1954, 1986, 2009
Jul 1989–May 1990 11-Month	53.9°F (12.2°C)	52.7°F (11.5°C)	1.2°F (0.7°C)	95th Coolest	Coolest since: 1989	1904
	53.9°F (12.2°C)	52.7°F (11.5°C)	1.2°F (0.7°C)	33rd Warmest	Warmest since: 1986	2012
	Ties: 1954, 1986
Jun 1989–May 1990 12-Month	55.6°F (13.1°C)	54.3°F (12.4°C)	1.3°F (0.7°C)	98th Coolest	Coolest since: 1989	1904
Jun 1989–May 1990 12-Month	55.6°F (13.1°C)	54.3°F (12.4°C)	1.3°F (0.7°C)	30th Warmest	Warmest since: 1985	2012
Dec 1988–May 1990 18-Month	51.8°F (11.0°C)	50.6°F (10.3°C)	1.2°F (0.7°C)	94th Coolest	Coolest since: 1989	1905
	51.8°F (11.0°C)	50.6°F (10.3°C)	1.2°F (0.7°C)	33rd Warmest	Warmest since: 1986	2017
	Ties: 1955
Jun 1988–May 1990 24-Month	55.2°F (12.9°C)	54.2°F (12.3°C)	1.0°F (0.6°C)	93rd Coolest	Coolest since: 1989	1905
	55.2°F (12.9°C)	54.2°F (12.3°C)	1.0°F (0.6°C)	34th Warmest	Warmest since: 1986	2017
	Ties: 1995
Jun 1987–May 1990 36-Month	55.0°F (12.8°C)	54.1°F (12.3°C)	0.9°F (0.5°C)	90th Coolest	Coolest since: 1989	1906
	55.0°F (12.8°C)	54.1°F (12.3°C)	0.9°F (0.5°C)	36th Warmest	Warmest since: 1987	2018, 2021
	Ties: 1932, 1950, 1986, 1997
Jun 1986–May 1990 48-Month	54.9°F (12.7°C)	54.1°F (12.3°C)	0.8°F (0.4°C)	87th Coolest	Coolest since: 1989	1907
	54.9°F (12.7°C)	54.1°F (12.3°C)	0.8°F (0.4°C)	38th Warmest	Warmest since: 1988	2019
	Ties: 1932, 1956, 1975, 1987, 1995, 1997
Jun 1985–May 1990 60-Month	55.0°F (12.8°C)	54.2°F (12.3°C)	0.8°F (0.5°C)	91st Coolest	Coolest since: 1989	1908
	55.0°F (12.8°C)	54.2°F (12.3°C)	0.8°F (0.5°C)	33rd Warmest	Warmest since: 1989	2020
	Ties: 1955, 1957, 1976, 1989

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published January 2023, retrieved on February 5, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings