Regional Rankings

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Please note, Palmer Indices are not available for NWS Regions. Degree Days are not available for Great Plains, Souther Plains and Gulf Coast Rockies and Westward, River Basins, or Agricultural Belts. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Great Basin

Average Temperature Rankings, September 1909

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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 1909 1-Month	59.5°F (15.3°C)	60.8°F (16.0°C)	-1.3°F (-0.7°C)	29th Coolest	Coolest since: 1908	1912
	59.5°F (15.3°C)	60.8°F (16.0°C)	-1.3°F (-0.7°C)	100th Warmest	Warmest since: 1906	2022
	Ties: 1906
Aug–Sep 1909 2-Month	64.6°F (18.1°C)	65.2°F (18.4°C)	-0.6°F (-0.3°C)	37th Coolest	Coolest since: 1908	1900
	64.6°F (18.1°C)	65.2°F (18.4°C)	-0.6°F (-0.3°C)	92nd Warmest	Warmest since: 1905	2020
	Ties: 1913, 1924, 1950
Jul–Sep 1909 3-Month	66.4°F (19.1°C)	67.2°F (19.6°C)	-0.8°F (-0.5°C)	22nd Coolest	Coolest since: 1907	1912
Jul–Sep 1909 3-Month	66.4°F (19.1°C)	67.2°F (19.6°C)	-0.8°F (-0.5°C)	107th Warmest	Warmest since: 1908	2022
Jun–Sep 1909 4-Month	66.1°F (18.9°C)	66.3°F (19.1°C)	-0.2°F (-0.2°C)	44th Coolest	Coolest since: 1908	1907
	66.1°F (18.9°C)	66.3°F (19.1°C)	-0.2°F (-0.2°C)	85th Warmest	Warmest since: 1898	2021
	Ties: 1970, 1973
May–Sep 1909 5-Month	63.2°F (17.3°C)	63.9°F (17.7°C)	-0.7°F (-0.4°C)	31st Coolest	Coolest since: 1908	1907, 1965
	63.2°F (17.3°C)	63.9°F (17.7°C)	-0.7°F (-0.4°C)	98th Warmest	Warmest since: 1904	2021
	Ties: 1917, 1971
Apr–Sep 1909 6-Month	60.1°F (15.6°C)	60.8°F (16.0°C)	-0.7°F (-0.4°C)	34th Coolest	Coolest since: 1908	1912
	60.1°F (15.6°C)	60.8°F (16.0°C)	-0.7°F (-0.4°C)	95th Warmest	Warmest since: 1904	2021
	Ties: 1915, 1998
Mar–Sep 1909 7-Month	56.8°F (13.8°C)	57.6°F (14.2°C)	-0.8°F (-0.4°C)	28th Coolest	Coolest since: 1908	1912
	56.8°F (13.8°C)	57.6°F (14.2°C)	-0.8°F (-0.4°C)	101st Warmest	Warmest since: 1905	1934, 2007, 2021
	Ties: 1942, 1963, 1971, 1980, 1991
Feb–Sep 1909 8-Month	53.8°F (12.1°C)	54.5°F (12.5°C)	-0.7°F (-0.4°C)	31st Coolest	Coolest since: 1908	1903
	53.8°F (12.1°C)	54.5°F (12.5°C)	-0.7°F (-0.4°C)	98th Warmest	Warmest since: 1905	1934, 2015
	Ties: 1932
Jan–Sep 1909 9-Month	51.6°F (10.9°C)	51.6°F (10.9°C)	0.0°F (0.0°C)	51st Coolest	Coolest since: 1908	1917
	51.6°F (10.9°C)	51.6°F (10.9°C)	0.0°F (0.0°C)	78th Warmest	Warmest since: 1905	2015
	Ties: 1905, 1924, 1967, 1991, 2011
Dec 1908–Sep 1909 10-Month	49.2°F (9.6°C)	49.4°F (9.7°C)	-0.2°F (-0.1°C)	47th Coolest	Coolest since: 1908	1917
	49.2°F (9.6°C)	49.4°F (9.7°C)	-0.2°F (-0.1°C)	81st Warmest	Warmest since: 1905	2015
	Ties: 1924, 1925, 1941, 1957
Nov 1908–Sep 1909 11-Month	48.1°F (8.9°C)	48.3°F (9.1°C)	-0.2°F (-0.2°C)	41st Coolest	Coolest since: 1908	1917
	48.1°F (8.9°C)	48.3°F (9.1°C)	-0.2°F (-0.2°C)	87th Warmest	Warmest since: 1905	2015
	Ties: 1911, 1925, 1968
Oct 1908–Sep 1909 12-Month	47.8°F (8.8°C)	48.4°F (9.1°C)	-0.6°F (-0.3°C)	31st Coolest	Coolest since: 1907	1917
	47.8°F (8.8°C)	48.4°F (9.1°C)	-0.6°F (-0.3°C)	97th Warmest	Warmest since: 1908	2015
	Ties: 1979
Apr 1908–Sep 1909 18-Month	51.6°F (10.9°C)	52.6°F (11.4°C)	-1.0°F (-0.5°C)	12th Coolest	Coolest since: 1906	1917
	51.6°F (10.9°C)	52.6°F (11.4°C)	-1.0°F (-0.5°C)	116th Warmest	Warmest since: 1908	2015
	Ties: 1973, 1983
Oct 1907–Sep 1909 24-Month	48.1°F (8.9°C)	48.4°F (9.1°C)	-0.3°F (-0.2°C)	37th Coolest	Coolest since: 1908	1913
	48.1°F (8.9°C)	48.4°F (9.1°C)	-0.3°F (-0.2°C)	90th Warmest	Warmest since: 1905	2016
	Ties: 1910, 1925, 1930, 1946, 1964, 1971, 1975
Oct 1906–Sep 1909 36-Month	47.9°F (8.8°C)	48.4°F (9.1°C)	-0.5°F (-0.3°C)	21st Coolest	Coolest since: 1908	1917
	47.9°F (8.8°C)	48.4°F (9.1°C)	-0.5°F (-0.3°C)	105th Warmest	Warmest since: 1906	2017
	Ties: 1903, 1904, 1905, 1906, 1919, 1922, 1951, 1957, 1964, 1965
Oct 1905–Sep 1909 48-Month	47.7°F (8.7°C)	48.4°F (9.1°C)	-0.7°F (-0.4°C)	11th Coolest	Coolest since: 1906	1915
	47.7°F (8.7°C)	48.4°F (9.1°C)	-0.7°F (-0.4°C)	114th Warmest	Warmest since: 1908	2018
	Ties: 1918, 1923, 1933, 1952
Oct 1904–Sep 1909 60-Month	47.8°F (8.8°C)	48.4°F (9.1°C)	-0.6°F (-0.3°C)	12th Coolest	Coolest since: 1907	1917
	47.8°F (8.8°C)	48.4°F (9.1°C)	-0.6°F (-0.3°C)	112th Warmest	Warmest since: 1908	2018
	Ties: 1900, 1906, 1910, 1912, 1924, 1948

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published March 2023, retrieved on March 23, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings