Regional Rankings

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Please note, Palmer Indices are not available for NWS Regions. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Upper Colorado River Basin

Average Temperature Rankings, December 1930

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
December 1930 1-Month	17.5°F (-8.1°C)	23.0°F (-5.0°C)	-5.5°F (-3.1°C)	13th Coolest	Coolest since: 1928	1909
	17.5°F (-8.1°C)	23.0°F (-5.0°C)	-5.5°F (-3.1°C)	116th Warmest	Warmest since: 1929	1980
	Ties: 1928, 1967
Nov–Dec 1930 2-Month	22.8°F (-5.1°C)	27.4°F (-2.6°C)	-4.6°F (-2.5°C)	5th Coolest	Coolest since: 1911	1895
	22.8°F (-5.1°C)	27.4°F (-2.6°C)	-4.6°F (-2.5°C)	124th Warmest	Warmest since: 1929	2017
	Ties: 1911
Oct–Dec 1930 3-Month	29.7°F (-1.3°C)	33.4°F (0.8°C)	-3.7°F (-2.1°C)	6th Coolest	Coolest since: 1919	1898
Oct–Dec 1930 3-Month	29.7°F (-1.3°C)	33.4°F (0.8°C)	-3.7°F (-2.1°C)	123rd Warmest	Warmest since: 1929	1950, 2017
Sep–Dec 1930 4-Month	36.2°F (2.3°C)	39.3°F (4.1°C)	-3.1°F (-1.8°C)	8th Coolest	Coolest since: 1919	1898, 1912
	36.2°F (2.3°C)	39.3°F (4.1°C)	-3.1°F (-1.8°C)	121st Warmest	Warmest since: 1929	2021
	Ties: 1916, 1919
Aug–Dec 1930 5-Month	41.9°F (5.5°C)	44.4°F (6.9°C)	-2.5°F (-1.4°C)	7th Coolest	Coolest since: 1916	1912
Aug–Dec 1930 5-Month	41.9°F (5.5°C)	44.4°F (6.9°C)	-2.5°F (-1.4°C)	122nd Warmest	Warmest since: 1929	2021
Jul–Dec 1930 6-Month	46.1°F (7.8°C)	48.1°F (8.9°C)	-2.0°F (-1.1°C)	7th Coolest	Coolest since: 1916	1912
Jul–Dec 1930 6-Month	46.1°F (7.8°C)	48.1°F (8.9°C)	-2.0°F (-1.1°C)	122nd Warmest	Warmest since: 1929	2021
Jun–Dec 1930 7-Month	48.2°F (9.0°C)	49.9°F (9.9°C)	-1.7°F (-0.9°C)	8th Coolest	Coolest since: 1920	1912
Jun–Dec 1930 7-Month	48.2°F (9.0°C)	49.9°F (9.9°C)	-1.7°F (-0.9°C)	121st Warmest	Warmest since: 1929	2021
May–Dec 1930 8-Month	48.2°F (9.0°C)	50.0°F (10.0°C)	-1.8°F (-1.0°C)	7th Coolest	Coolest since: 1916	1912
	48.2°F (9.0°C)	50.0°F (10.0°C)	-1.8°F (-1.0°C)	122nd Warmest	Warmest since: 1929	2021
	Ties: 1905
Apr–Dec 1930 9-Month	48.0°F (8.9°C)	49.1°F (9.5°C)	-1.1°F (-0.6°C)	22nd Coolest	Coolest since: 1928	1912
	48.0°F (8.9°C)	49.1°F (9.5°C)	-1.1°F (-0.6°C)	107th Warmest	Warmest since: 1929	2021
	Ties: 1993
Mar–Dec 1930 10-Month	46.4°F (8.0°C)	47.4°F (8.6°C)	-1.0°F (-0.6°C)	21st Coolest	Coolest since: 1929	1912
	46.4°F (8.0°C)	47.4°F (8.6°C)	-1.0°F (-0.6°C)	108th Warmest	Warmest since: 1929	2012
	Ties: 1897, 1902, 1905, 1929, 1964, 1970
Feb–Dec 1930 11-Month	44.8°F (7.1°C)	45.4°F (7.4°C)	-0.6°F (-0.3°C)	36th Coolest	Coolest since: 1929	1912
	44.8°F (7.1°C)	45.4°F (7.4°C)	-0.6°F (-0.3°C)	93rd Warmest	Warmest since: 1928	2017
	Ties: 1902, 1906, 1922, 1928, 1982
Jan–Dec 1930 12-Month	42.2°F (5.7°C)	43.5°F (6.4°C)	-1.3°F (-0.7°C)	20th Coolest	Coolest since: 1929	1895, 1912
	42.2°F (5.7°C)	43.5°F (6.4°C)	-1.3°F (-0.7°C)	109th Warmest	Warmest since: 1928	2012
	Ties: 1897, 1919, 1984
Jul 1929–Dec 1930 18-Month	44.1°F (6.7°C)	45.0°F (7.2°C)	-0.9°F (-0.5°C)	23rd Coolest	Coolest since: 1929	1912
	44.1°F (6.7°C)	45.0°F (7.2°C)	-0.9°F (-0.5°C)	105th Warmest	Warmest since: 1928	1934
	Ties: 1905
Jan 1929–Dec 1930 24-Month	41.9°F (5.5°C)	43.4°F (6.3°C)	-1.5°F (-0.8°C)	8th Coolest	Coolest since: 1924	1913
	41.9°F (5.5°C)	43.4°F (6.3°C)	-1.5°F (-0.8°C)	120th Warmest	Warmest since: 1929	2018
	Ties: 1903, 1924
Jan 1928–Dec 1930 36-Month	42.3°F (5.7°C)	43.4°F (6.3°C)	-1.1°F (-0.6°C)	11th Coolest	Coolest since: 1924	1899, 1913
	42.3°F (5.7°C)	43.4°F (6.3°C)	-1.1°F (-0.6°C)	116th Warmest	Warmest since: 1929	2017
	Ties: 1916, 1920, 1975
Jan 1927–Dec 1930 48-Month	42.5°F (5.8°C)	43.4°F (6.3°C)	-0.9°F (-0.5°C)	16th Coolest	Coolest since: 1925	1898
	42.5°F (5.8°C)	43.4°F (6.3°C)	-0.9°F (-0.5°C)	110th Warmest	Warmest since: 1929	2018
	Ties: 1909, 1912
Jan 1926–Dec 1930 60-Month	42.8°F (6.0°C)	43.4°F (6.3°C)	-0.6°F (-0.3°C)	25th Coolest	Coolest since: 1926	1899
	42.8°F (6.0°C)	43.4°F (6.3°C)	-0.6°F (-0.3°C)	100th Warmest	Warmest since: 1929	2018
	Ties: 1902, 1903, 1922, 1925, 1952, 1968, 1975

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published February 2023, retrieved on February 8, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings