National Rankings

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Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Contiguous U.S.

Average Temperature Rankings, September 1998

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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
September 1998 1-Month	68.99°F (20.55°C)	64.86°F (18.26°C)	4.13°F (2.29°C)	128th Coolest	Coolest since: 1997	1965
September 1998 1-Month	68.99°F (20.55°C)	64.86°F (18.26°C)	4.13°F (2.29°C)	1st Warmest	Warmest to Date	1998
Aug–Sep 1998 2-Month	71.51°F (21.95°C)	68.48°F (20.27°C)	3.03°F (1.68°C)	128th Coolest	Coolest since: 1997	1974
Aug–Sep 1998 2-Month	71.51°F (21.95°C)	68.48°F (20.27°C)	3.03°F (1.68°C)	1st Warmest	Warmest to Date	1998
Jul–Sep 1998 3-Month	72.84°F (22.69°C)	70.19°F (21.22°C)	2.65°F (1.47°C)	127th Coolest	Coolest since: 1997	1950
Jul–Sep 1998 3-Month	72.84°F (22.69°C)	70.19°F (21.22°C)	2.65°F (1.47°C)	2nd Warmest	Warmest to Date	2022
Jun–Sep 1998 4-Month	71.66°F (22.03°C)	69.77°F (20.98°C)	1.89°F (1.05°C)	120th Coolest	Coolest since: 1997	1903
Jun–Sep 1998 4-Month	71.66°F (22.03°C)	69.77°F (20.98°C)	1.89°F (1.05°C)	9th Warmest	Warmest since: 1936	2021, 2022
May–Sep 1998 5-Month	69.82°F (21.01°C)	67.85°F (19.92°C)	1.97°F (1.09°C)	122nd Coolest	Coolest since: 1997	1907
May–Sep 1998 5-Month	69.82°F (21.01°C)	67.85°F (19.92°C)	1.97°F (1.09°C)	7th Warmest	Warmest since: 1936	2018
Apr–Sep 1998 6-Month	66.70°F (19.28°C)	65.05°F (18.36°C)	1.65°F (0.92°C)	119th Coolest	Coolest since: 1997	1907
Apr–Sep 1998 6-Month	66.70°F (19.28°C)	65.05°F (18.36°C)	1.65°F (0.92°C)	10th Warmest	Warmest since: 1936	2012
Mar–Sep 1998 7-Month	63.07°F (17.26°C)	61.69°F (16.49°C)	1.38°F (0.77°C)	114th Coolest	Coolest since: 1997	1912
	63.07°F (17.26°C)	61.69°F (16.49°C)	1.38°F (0.77°C)	15th Warmest	Warmest since: 1936	2012
	Ties: 1910
Feb–Sep 1998 8-Month	60.03°F (15.57°C)	58.21°F (14.56°C)	1.82°F (1.01°C)	122nd Coolest	Coolest since: 1997	1917
Feb–Sep 1998 8-Month	60.03°F (15.57°C)	58.21°F (14.56°C)	1.82°F (1.01°C)	7th Warmest	Warmest to Date	2012
Jan–Sep 1998 9-Month	57.25°F (14.03°C)	55.08°F (12.82°C)	2.17°F (1.21°C)	122nd Coolest	Coolest since: 1997	1912
Jan–Sep 1998 9-Month	57.25°F (14.03°C)	55.08°F (12.82°C)	2.17°F (1.21°C)	7th Warmest	Warmest to Date	2012
Dec 1997–Sep 1998 10-Month	54.92°F (12.73°C)	52.85°F (11.58°C)	2.07°F (1.15°C)	119th Coolest	Coolest since: 1997	1917
Dec 1997–Sep 1998 10-Month	54.92°F (12.73°C)	52.85°F (11.58°C)	2.07°F (1.15°C)	9th Warmest	Warmest since: 1934	2012
Nov 1997–Sep 1998 11-Month	53.64°F (12.02°C)	51.84°F (11.02°C)	1.80°F (1.00°C)	115th Coolest	Coolest since: 1997	1912
Nov 1997–Sep 1998 11-Month	53.64°F (12.02°C)	51.84°F (11.02°C)	1.80°F (1.00°C)	13th Warmest	Warmest since: 1934	2012
Oct 1997–Sep 1998 12-Month	53.67°F (12.04°C)	52.03°F (11.13°C)	1.64°F (0.91°C)	114th Coolest	Coolest since: 1997	1912
Oct 1997–Sep 1998 12-Month	53.67°F (12.04°C)	52.03°F (11.13°C)	1.64°F (0.91°C)	14th Warmest	Warmest since: 1934	2012
Apr 1997–Sep 1998 18-Month	57.28°F (14.04°C)	56.37°F (13.54°C)	0.91°F (0.50°C)	102nd Coolest	Coolest since: 1997	1917
Apr 1997–Sep 1998 18-Month	57.28°F (14.04°C)	56.37°F (13.54°C)	0.91°F (0.50°C)	26th Warmest	Warmest since: 1991	2012
Oct 1996–Sep 1998 24-Month	52.87°F (11.59°C)	52.02°F (11.12°C)	0.85°F (0.47°C)	98th Coolest	Coolest since: 1997	1913, 1918
	52.87°F (11.59°C)	52.02°F (11.12°C)	0.85°F (0.47°C)	29th Warmest	Warmest since: 1992	2017
	Ties: 2015
Oct 1995–Sep 1998 36-Month	52.62°F (11.46°C)	52.00°F (11.11°C)	0.62°F (0.35°C)	90th Coolest	Coolest since: 1997	1917
Oct 1995–Sep 1998 36-Month	52.62°F (11.46°C)	52.00°F (11.11°C)	0.62°F (0.35°C)	36th Warmest	Warmest since: 1992	2018
Oct 1994–Sep 1998 48-Month	52.69°F (11.49°C)	51.99°F (11.11°C)	0.70°F (0.38°C)	94th Coolest	Coolest since: 1997	1918
Oct 1994–Sep 1998 48-Month	52.69°F (11.49°C)	51.99°F (11.11°C)	0.70°F (0.38°C)	31st Warmest	Warmest since: 1992	2018
Oct 1993–Sep 1998 60-Month	52.61°F (11.45°C)	51.98°F (11.10°C)	0.63°F (0.35°C)	92nd Coolest	Coolest since: 1997	1920
Oct 1993–Sep 1998 60-Month	52.61°F (11.45°C)	51.98°F (11.10°C)	0.63°F (0.35°C)	32nd Warmest	Warmest since: 1992	2020

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: National Rankings, published March 2023, retrieved on April 1, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/national/rankings