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, April 1930

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
April 1930 1-Month	46.7°F (8.2°C)	41.7°F (5.4°C)	5.0°F (2.8°C)	123rd Coolest	Coolest since: 1929	1920
	46.7°F (8.2°C)	41.7°F (5.4°C)	5.0°F (2.8°C)	6th Warmest	Warmest to Date	1992
	Ties: 2012
Mar–Apr 1930 2-Month	39.4°F (4.1°C)	37.3°F (2.9°C)	2.1°F (1.2°C)	101st Coolest	Coolest since: 1929	1917
Mar–Apr 1930 2-Month	39.4°F (4.1°C)	37.3°F (2.9°C)	2.1°F (1.2°C)	28th Warmest	Warmest since: 1925	1934, 1992
Feb–Apr 1930 3-Month	35.9°F (2.2°C)	33.4°F (0.8°C)	2.5°F (1.4°C)	107th Coolest	Coolest since: 1929	1903
	35.9°F (2.2°C)	33.4°F (0.8°C)	2.5°F (1.4°C)	22nd Warmest	Warmest since: 1907	1934
	Ties: 1904, 1999
Jan–Apr 1930 4-Month	30.2°F (-1.0°C)	30.3°F (-0.9°C)	-0.1°F (-0.1°C)	50th Coolest	Coolest since: 1929	1917
	30.2°F (-1.0°C)	30.3°F (-0.9°C)	-0.1°F (-0.1°C)	79th Warmest	Warmest since: 1928	1934
	Ties: 1915, 1963, 1991
Dec 1929–Apr 1930 5-Month	29.6°F (-1.3°C)	28.8°F (-1.8°C)	0.8°F (0.5°C)	75th Coolest	Coolest since: 1929	1917
	29.6°F (-1.3°C)	28.8°F (-1.8°C)	0.8°F (0.5°C)	53rd Warmest	Warmest since: 1926	1934
	Ties: 1904, 1921, 1967, 1971, 1997
Nov 1929–Apr 1930 6-Month	29.3°F (-1.5°C)	29.4°F (-1.4°C)	-0.1°F (-0.1°C)	51st Coolest	Coolest since: 1929	1917
	29.3°F (-1.5°C)	29.4°F (-1.4°C)	-0.1°F (-0.1°C)	77th Warmest	Warmest since: 1928	1934
	Ties: 1960
Oct 1929–Apr 1930 7-Month	31.6°F (-0.2°C)	31.7°F (-0.2°C)	-0.1°F (0.0°C)	50th Coolest	Coolest since: 1929	1917
	31.6°F (-0.2°C)	31.7°F (-0.2°C)	-0.1°F (0.0°C)	78th Warmest	Warmest since: 1928	1934
	Ties: 1993
Sep 1929–Apr 1930 8-Month	34.4°F (1.3°C)	34.7°F (1.5°C)	-0.3°F (-0.2°C)	42nd Coolest	Coolest since: 1929	1917
	34.4°F (1.3°C)	34.7°F (1.5°C)	-0.3°F (-0.2°C)	86th Warmest	Warmest since: 1928	1934
	Ties: 1915, 1960, 1971
Aug 1929–Apr 1930 9-Month	37.9°F (3.3°C)	38.1°F (3.4°C)	-0.2°F (-0.1°C)	52nd Coolest	Coolest since: 1929	1917
Aug 1929–Apr 1930 9-Month	37.9°F (3.3°C)	38.1°F (3.4°C)	-0.2°F (-0.1°C)	76th Warmest	Warmest since: 1928	1934
Jul 1929–Apr 1930 10-Month	40.8°F (4.9°C)	41.0°F (5.0°C)	-0.2°F (-0.1°C)	50th Coolest	Coolest since: 1929	1917
	40.8°F (4.9°C)	41.0°F (5.0°C)	-0.2°F (-0.1°C)	78th Warmest	Warmest since: 1928	1934
	Ties: 1900, 1905, 1928, 1960, 1976
Jun 1929–Apr 1930 11-Month	42.5°F (5.8°C)	42.8°F (6.0°C)	-0.3°F (-0.2°C)	49th Coolest	Coolest since: 1929	1917
	42.5°F (5.8°C)	42.8°F (6.0°C)	-0.3°F (-0.2°C)	79th Warmest	Warmest since: 1928	1934
	Ties: 1900, 1901, 1923, 1928
May 1929–Apr 1930 12-Month	43.1°F (6.2°C)	43.5°F (6.4°C)	-0.4°F (-0.2°C)	47th Coolest	Coolest since: 1929	1917
	43.1°F (6.2°C)	43.5°F (6.4°C)	-0.4°F (-0.2°C)	81st Warmest	Warmest since: 1928	1934, 2015, 2018
	Ties: 1905, 1923, 1985
Nov 1928–Apr 1930 18-Month	37.2°F (2.9°C)	38.7°F (3.7°C)	-1.5°F (-0.8°C)	11th Coolest	Coolest since: 1920	1913
	37.2°F (2.9°C)	38.7°F (3.7°C)	-1.5°F (-0.8°C)	116th Warmest	Warmest since: 1929	2018
	Ties: 1914, 1920, 1949
May 1928–Apr 1930 24-Month	42.2°F (5.7°C)	43.5°F (6.4°C)	-1.3°F (-0.7°C)	13th Coolest	Coolest since: 1929	1913
	42.2°F (5.7°C)	43.5°F (6.4°C)	-1.3°F (-0.7°C)	114th Warmest	Warmest since: 1929	2018
	Ties: 1929
May 1927–Apr 1930 36-Month	42.5°F (5.8°C)	43.4°F (6.3°C)	-0.9°F (-0.5°C)	15th Coolest	Coolest since: 1921	1914
	42.5°F (5.8°C)	43.4°F (6.3°C)	-0.9°F (-0.5°C)	111th Warmest	Warmest since: 1929	2017, 2018, 2019
	Ties: 1909, 1921
May 1926–Apr 1930 48-Month	42.8°F (6.0°C)	43.3°F (6.3°C)	-0.5°F (-0.3°C)	27th Coolest	Coolest since: 1926	1899, 1915
	42.8°F (6.0°C)	43.3°F (6.3°C)	-0.5°F (-0.3°C)	98th Warmest	Warmest since: 1929	2018
	Ties: 1923, 1926, 1974
May 1925–Apr 1930 60-Month	43.0°F (6.1°C)	43.3°F (6.3°C)	-0.3°F (-0.2°C)	34th Coolest	Coolest since: 1929	1917
	43.0°F (6.1°C)	43.3°F (6.3°C)	-0.3°F (-0.2°C)	90th Warmest	Warmest since: 1928	2018, 2019
	Ties: 1905, 1908, 1927, 1953, 1974

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published January 2023, retrieved on February 4, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings