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.

Maryland

Minimum Temperature Rankings, December 1999

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Record Coolest
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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
December 1999 1-Month	29.9°F (-1.2°C)	26.7°F (-2.9°C)	3.2°F (1.7°C)	102nd Coolest	Coolest since: 1997	1989
	29.9°F (-1.2°C)	26.7°F (-2.9°C)	3.2°F (1.7°C)	27th Warmest	Warmest since: 1998	2015
	Ties: 2013, 2020
Nov–Dec 1999 2-Month	35.1°F (1.7°C)	30.9°F (-0.6°C)	4.2°F (2.3°C)	121st Coolest	Coolest since: 1998	1917
Nov–Dec 1999 2-Month	35.1°F (1.7°C)	30.9°F (-0.6°C)	4.2°F (2.3°C)	8th Warmest	Warmest since: 1994	2015
Oct–Dec 1999 3-Month	37.8°F (3.2°C)	35.5°F (1.9°C)	2.3°F (1.3°C)	103rd Coolest	Coolest since: 1997	1917
	37.8°F (3.2°C)	35.5°F (1.9°C)	2.3°F (1.3°C)	26th Warmest	Warmest since: 1998	2015
	Ties: 1913, 1927, 1994, 2004
Sep–Dec 1999 4-Month	42.8°F (6.0°C)	40.7°F (4.8°C)	2.1°F (1.2°C)	105th Coolest	Coolest since: 1997	1917
	42.8°F (6.0°C)	40.7°F (4.8°C)	2.1°F (1.2°C)	24th Warmest	Warmest since: 1998	2015
	Ties: 2003
Aug–Dec 1999 5-Month	47.1°F (8.4°C)	45.1°F (7.3°C)	2.0°F (1.1°C)	103rd Coolest	Coolest since: 1997	1917
	47.1°F (8.4°C)	45.1°F (7.3°C)	2.0°F (1.1°C)	26th Warmest	Warmest since: 1998	2018
	Ties: 1985
Jul–Dec 1999 6-Month	50.5°F (10.3°C)	48.4°F (9.1°C)	2.1°F (1.2°C)	113th Coolest	Coolest since: 1998	1917
	50.5°F (10.3°C)	48.4°F (9.1°C)	2.1°F (1.2°C)	16th Warmest	Warmest since: 1971	2018
	Ties: 2004, 2017
Jun–Dec 1999 7-Month	51.9°F (11.1°C)	50.0°F (10.0°C)	1.9°F (1.1°C)	108th Coolest	Coolest since: 1998	1917
	51.9°F (11.1°C)	50.0°F (10.0°C)	1.9°F (1.1°C)	21st Warmest	Warmest since: 1998	2015, 2018
	Ties: 1906, 1998
May–Dec 1999 8-Month	51.8°F (11.0°C)	50.1°F (10.1°C)	1.7°F (0.9°C)	105th Coolest	Coolest since: 1997	1917
	51.8°F (11.0°C)	50.1°F (10.1°C)	1.7°F (0.9°C)	24th Warmest	Warmest since: 1998	2018
	Ties: 1975
Apr–Dec 1999 9-Month	50.6°F (10.3°C)	49.1°F (9.5°C)	1.5°F (0.8°C)	103rd Coolest	Coolest since: 1997	1917
	50.6°F (10.3°C)	49.1°F (9.5°C)	1.5°F (0.8°C)	26th Warmest	Warmest since: 1998	2015
	Ties: 1985, 1990
Mar–Dec 1999 10-Month	48.7°F (9.3°C)	47.4°F (8.6°C)	1.3°F (0.7°C)	99th Coolest	Coolest since: 1997	1917
Mar–Dec 1999 10-Month	48.7°F (9.3°C)	47.4°F (8.6°C)	1.3°F (0.7°C)	30th Warmest	Warmest since: 1998	2011
Feb–Dec 1999 11-Month	46.7°F (8.2°C)	45.3°F (7.4°C)	1.4°F (0.8°C)	103rd Coolest	Coolest since: 1997	1917
	46.7°F (8.2°C)	45.3°F (7.4°C)	1.4°F (0.8°C)	26th Warmest	Warmest since: 1998	2012, 2018, 2020
	Ties: 2003, 2007, 2013
Jan–Dec 1999 12-Month	45.0°F (7.2°C)	43.5°F (6.4°C)	1.5°F (0.8°C)	104th Coolest	Coolest since: 1997	1904
	45.0°F (7.2°C)	43.5°F (6.4°C)	1.5°F (0.8°C)	25th Warmest	Warmest since: 1998	2020
	Ties: 2008, 2009
Jul 1998–Dec 1999 18-Month	46.8°F (8.2°C)	45.2°F (7.3°C)	1.6°F (0.9°C)	107th Coolest	Coolest since: 1997	1904
	46.8°F (8.2°C)	45.2°F (7.3°C)	1.6°F (0.9°C)	21st Warmest	Warmest since: 1998	2012, 2020, 2021
	Ties: 2015
Jan 1998–Dec 1999 24-Month	45.9°F (7.7°C)	43.5°F (6.4°C)	2.4°F (1.3°C)	117th Coolest	Coolest since: 1998	1905
	45.9°F (7.7°C)	43.5°F (6.4°C)	2.4°F (1.3°C)	11th Warmest	Warmest since: 1991	2021
	Ties: 2016
Jan 1997–Dec 1999 36-Month	45.2°F (7.3°C)	43.5°F (6.4°C)	1.7°F (0.9°C)	109th Coolest	Coolest since: 1998	1905
	45.2°F (7.3°C)	43.5°F (6.4°C)	1.7°F (0.9°C)	18th Warmest	Warmest since: 1992	2021
	Ties: 2000
Jan 1996–Dec 1999 48-Month	44.8°F (7.1°C)	43.5°F (6.4°C)	1.3°F (0.7°C)	101st Coolest	Coolest since: 1998	1905
Jan 1996–Dec 1999 48-Month	44.8°F (7.1°C)	43.5°F (6.4°C)	1.3°F (0.7°C)	25th Warmest	Warmest since: 1993	2020, 2021
Jan 1995–Dec 1999 60-Month	44.7°F (7.1°C)	43.5°F (6.4°C)	1.2°F (0.7°C)	100th Coolest	Coolest since: 1998	1905
Jan 1995–Dec 1999 60-Month	44.7°F (7.1°C)	43.5°F (6.4°C)	1.2°F (0.7°C)	25th Warmest	Warmest since: 1994	2021

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published May 2023, retrieved on June 6, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings