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 1909

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
September 1909 1-Month	51.46°F (10.81°C)	51.90°F (11.06°C)	-0.44°F (-0.25°C)	41st Coolest	Coolest since: 1907	1918
September 1909 1-Month	51.46°F (10.81°C)	51.90°F (11.06°C)	-0.44°F (-0.25°C)	88th Warmest	Warmest since: 1908	2019
Aug–Sep 1909 2-Month	55.62°F (13.12°C)	55.48°F (13.04°C)	0.14°F (0.08°C)	64th Coolest	Coolest since: 1908	1974
Aug–Sep 1909 2-Month	55.62°F (13.12°C)	55.48°F (13.04°C)	0.14°F (0.08°C)	65th Warmest	Warmest since: 1906	2019
Jul–Sep 1909 3-Month	57.08°F (13.93°C)	57.16°F (13.98°C)	-0.08°F (-0.05°C)	52nd Coolest	Coolest since: 1908	1924
Jul–Sep 1909 3-Month	57.08°F (13.93°C)	57.16°F (13.98°C)	-0.08°F (-0.05°C)	77th Warmest	Warmest since: 1906	2022
Jun–Sep 1909 4-Month	56.91°F (13.84°C)	56.78°F (13.77°C)	0.13°F (0.07°C)	60th Coolest	Coolest since: 1908	1903
Jun–Sep 1909 4-Month	56.91°F (13.84°C)	56.78°F (13.77°C)	0.13°F (0.07°C)	69th Warmest	Warmest since: 1901	2021
May–Sep 1909 5-Month	54.58°F (12.54°C)	54.92°F (12.73°C)	-0.34°F (-0.19°C)	32nd Coolest	Coolest since: 1908	1907, 1924
	54.58°F (12.54°C)	54.92°F (12.73°C)	-0.34°F (-0.19°C)	97th Warmest	Warmest since: 1906	2018
	Ties: 1979
Apr–Sep 1909 6-Month	51.55°F (10.86°C)	52.20°F (11.22°C)	-0.65°F (-0.36°C)	20th Coolest	Coolest since: 1907	1907
Apr–Sep 1909 6-Month	51.55°F (10.86°C)	52.20°F (11.22°C)	-0.65°F (-0.36°C)	109th Warmest	Warmest since: 1908	2018
Mar–Sep 1909 7-Month	48.38°F (9.10°C)	49.02°F (9.46°C)	-0.64°F (-0.36°C)	22nd Coolest	Coolest since: 1907	1917
Mar–Sep 1909 7-Month	48.38°F (9.10°C)	49.02°F (9.46°C)	-0.64°F (-0.36°C)	107th Warmest	Warmest since: 1908	2012
Feb–Sep 1909 8-Month	45.32°F (7.40°C)	45.75°F (7.64°C)	-0.43°F (-0.24°C)	30th Coolest	Coolest since: 1907	1917
Feb–Sep 1909 8-Month	45.32°F (7.40°C)	45.75°F (7.64°C)	-0.43°F (-0.24°C)	99th Warmest	Warmest since: 1908	2012
Jan–Sep 1909 9-Month	42.76°F (5.98°C)	42.86°F (6.03°C)	-0.10°F (-0.05°C)	54th Coolest	Coolest since: 1907	1917
	42.76°F (5.98°C)	42.86°F (6.03°C)	-0.10°F (-0.05°C)	75th Warmest	Warmest since: 1908	2012
	Ties: 1993
Dec 1908–Sep 1909 10-Month	40.80°F (4.89°C)	40.84°F (4.91°C)	-0.04°F (-0.02°C)	51st Coolest	Coolest since: 1907	1917
	40.80°F (4.89°C)	40.84°F (4.91°C)	-0.04°F (-0.02°C)	77th Warmest	Warmest since: 1908	2016
	Ties: 1977, 1985
Nov 1908–Sep 1909 11-Month	39.88°F (4.38°C)	39.92°F (4.40°C)	-0.04°F (-0.02°C)	55th Coolest	Coolest since: 1907	1917
Nov 1908–Sep 1909 11-Month	39.88°F (4.38°C)	39.92°F (4.40°C)	-0.04°F (-0.02°C)	73rd Warmest	Warmest since: 1908	2016
Oct 1908–Sep 1909 12-Month	39.81°F (4.34°C)	40.05°F (4.47°C)	-0.24°F (-0.13°C)	45th Coolest	Coolest since: 1907	1917
Oct 1908–Sep 1909 12-Month	39.81°F (4.34°C)	40.05°F (4.47°C)	-0.24°F (-0.13°C)	83rd Warmest	Warmest since: 1908	2016
Apr 1908–Sep 1909 18-Month	43.79°F (6.55°C)	44.10°F (6.72°C)	-0.31°F (-0.17°C)	33rd Coolest	Coolest since: 1908	1917
Apr 1908–Sep 1909 18-Month	43.79°F (6.55°C)	44.10°F (6.72°C)	-0.31°F (-0.17°C)	95th Warmest	Warmest since: 1907	2016
Oct 1907–Sep 1909 24-Month	40.00°F (4.44°C)	40.03°F (4.46°C)	-0.03°F (-0.02°C)	56th Coolest	Coolest since: 1908	1918
Oct 1907–Sep 1909 24-Month	40.00°F (4.44°C)	40.03°F (4.46°C)	-0.03°F (-0.02°C)	71st Warmest	Warmest since: 1901	2017
Oct 1906–Sep 1909 36-Month	39.90°F (4.39°C)	40.02°F (4.46°C)	-0.12°F (-0.07°C)	49th Coolest	Coolest since: 1908	1918
Oct 1906–Sep 1909 36-Month	39.90°F (4.39°C)	40.02°F (4.46°C)	-0.12°F (-0.07°C)	77th Warmest	Warmest since: 1902	2017, 2018
Oct 1905–Sep 1909 48-Month	39.87°F (4.37°C)	40.01°F (4.45°C)	-0.14°F (-0.08°C)	46th Coolest	Coolest since: 1908	1918
Oct 1905–Sep 1909 48-Month	39.87°F (4.37°C)	40.01°F (4.45°C)	-0.14°F (-0.08°C)	79th Warmest	Warmest since: 1903	2018
Oct 1904–Sep 1909 60-Month	39.80°F (4.33°C)	40.00°F (4.44°C)	-0.20°F (-0.11°C)	36th Coolest	Coolest since: 1908	1920
	39.80°F (4.33°C)	40.00°F (4.44°C)	-0.20°F (-0.11°C)	88th Warmest	Warmest since: 1901	2019, 2020
	Ties: 1910, 1963

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: National Rankings, published January 2023, retrieved on February 3, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/national/rankings