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.

Minimum Temperature Rankings, September 1989

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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 1989 1-Month	51.19°F (10.66°C)	51.90°F (11.06°C)	-0.71°F (-0.40°C)	35th Coolest	Coolest since: 1985	1918
	51.19°F (10.66°C)	51.90°F (11.06°C)	-0.71°F (-0.40°C)	94th Warmest	Warmest since: 1988	2019
	Ties: 1976
Aug–Sep 1989 2-Month	55.10°F (12.83°C)	55.48°F (13.04°C)	-0.38°F (-0.21°C)	37th Coolest	Coolest since: 1985	1974
Aug–Sep 1989 2-Month	55.10°F (12.83°C)	55.48°F (13.04°C)	-0.38°F (-0.21°C)	92nd Warmest	Warmest since: 1988	2019
Jul–Sep 1989 3-Month	57.21°F (14.01°C)	57.16°F (13.98°C)	0.05°F (0.03°C)	58th Coolest	Coolest since: 1987	1924
Jul–Sep 1989 3-Month	57.21°F (14.01°C)	57.16°F (13.98°C)	0.05°F (0.03°C)	71st Warmest	Warmest since: 1988	2022
Jun–Sep 1989 4-Month	56.82°F (13.79°C)	56.78°F (13.77°C)	0.04°F (0.02°C)	51st Coolest	Coolest since: 1985	1903
Jun–Sep 1989 4-Month	56.82°F (13.79°C)	56.78°F (13.77°C)	0.04°F (0.02°C)	78th Warmest	Warmest since: 1988	2021
May–Sep 1989 5-Month	55.00°F (12.78°C)	54.91°F (12.73°C)	0.09°F (0.05°C)	60th Coolest	Coolest since: 1985	1907, 1924
May–Sep 1989 5-Month	55.00°F (12.78°C)	54.91°F (12.73°C)	0.09°F (0.05°C)	69th Warmest	Warmest since: 1988	2018
Apr–Sep 1989 6-Month	52.47°F (11.37°C)	52.20°F (11.22°C)	0.27°F (0.15°C)	68th Coolest	Coolest since: 1984	1907
	52.47°F (11.37°C)	52.20°F (11.22°C)	0.27°F (0.15°C)	61st Warmest	Warmest since: 1988	2018
	Ties: 1906, 1948
Mar–Sep 1989 7-Month	49.39°F (9.66°C)	49.02°F (9.46°C)	0.37°F (0.20°C)	77th Coolest	Coolest since: 1984	1917
Mar–Sep 1989 7-Month	49.39°F (9.66°C)	49.02°F (9.46°C)	0.37°F (0.20°C)	52nd Warmest	Warmest since: 1988	2012
Feb–Sep 1989 8-Month	45.57°F (7.54°C)	45.75°F (7.64°C)	-0.18°F (-0.10°C)	46th Coolest	Coolest since: 1982	1917
	45.57°F (7.54°C)	45.75°F (7.64°C)	-0.18°F (-0.10°C)	83rd Warmest	Warmest since: 1988	2012
	Ties: 1974
Jan–Sep 1989 9-Month	43.06°F (6.14°C)	42.86°F (6.03°C)	0.20°F (0.11°C)	70th Coolest	Coolest since: 1988	1917
Jan–Sep 1989 9-Month	43.06°F (6.14°C)	42.86°F (6.03°C)	0.20°F (0.11°C)	59th Warmest	Warmest since: 1987	2012
Dec 1988–Sep 1989 10-Month	41.00°F (5.00°C)	40.84°F (4.91°C)	0.16°F (0.09°C)	70th Coolest	Coolest since: 1985	1917
Dec 1988–Sep 1989 10-Month	41.00°F (5.00°C)	40.84°F (4.91°C)	0.16°F (0.09°C)	58th Warmest	Warmest since: 1988	2016
Nov 1988–Sep 1989 11-Month	40.23°F (4.57°C)	39.92°F (4.40°C)	0.31°F (0.17°C)	78th Coolest	Coolest since: 1985	1917
Nov 1988–Sep 1989 11-Month	40.23°F (4.57°C)	39.92°F (4.40°C)	0.31°F (0.17°C)	50th Warmest	Warmest since: 1988	2016
Oct 1988–Sep 1989 12-Month	40.28°F (4.60°C)	40.04°F (4.47°C)	0.24°F (0.13°C)	72nd Coolest	Coolest since: 1988	1917
Oct 1988–Sep 1989 12-Month	40.28°F (4.60°C)	40.04°F (4.47°C)	0.24°F (0.13°C)	56th Warmest	Warmest since: 1987	2016
Apr 1988–Sep 1989 18-Month	44.41°F (6.89°C)	44.09°F (6.72°C)	0.32°F (0.17°C)	78th Coolest	Coolest since: 1985	1917
Apr 1988–Sep 1989 18-Month	44.41°F (6.89°C)	44.09°F (6.72°C)	0.32°F (0.17°C)	50th Warmest	Warmest since: 1988	2016
Oct 1987–Sep 1989 24-Month	40.24°F (4.58°C)	40.04°F (4.47°C)	0.20°F (0.11°C)	72nd Coolest	Coolest since: 1985	1918
Oct 1987–Sep 1989 24-Month	40.24°F (4.58°C)	40.04°F (4.47°C)	0.20°F (0.11°C)	55th Warmest	Warmest since: 1988	2017
Oct 1986–Sep 1989 36-Month	40.64°F (4.80°C)	40.02°F (4.46°C)	0.62°F (0.34°C)	94th Coolest	Coolest since: 1986	1918
Oct 1986–Sep 1989 36-Month	40.64°F (4.80°C)	40.02°F (4.46°C)	0.62°F (0.34°C)	32nd Warmest	Warmest since: 1988	2017, 2018
Oct 1985–Sep 1989 48-Month	40.76°F (4.87°C)	40.01°F (4.45°C)	0.75°F (0.42°C)	97th Coolest	Coolest since: 1988	1918
Oct 1985–Sep 1989 48-Month	40.76°F (4.87°C)	40.01°F (4.45°C)	0.75°F (0.42°C)	28th Warmest	Warmest to Date	2018
Oct 1984–Sep 1989 60-Month	40.63°F (4.79°C)	40.00°F (4.44°C)	0.63°F (0.35°C)	90th Coolest	Coolest since: 1988	1920
Oct 1984–Sep 1989 60-Month	40.63°F (4.79°C)	40.00°F (4.44°C)	0.63°F (0.35°C)	34th Warmest	Warmest since: 1987	2019, 2020

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: National Rankings, published May 2023, retrieved on May 30, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/national/rankings