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 1955

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
April 1955 1-Month	39.1°F (3.9°C)	41.7°F (5.4°C)	-2.6°F (-1.5°C)	21st Coolest	Coolest since: 1945	1920
	39.1°F (3.9°C)	41.7°F (5.4°C)	-2.6°F (-1.5°C)	108th Warmest	Warmest since: 1954	1992
	Ties: 1999
Mar–Apr 1955 2-Month	33.9°F (1.1°C)	37.2°F (2.9°C)	-3.3°F (-1.8°C)	9th Coolest	Coolest since: 1944	1917
	33.9°F (1.1°C)	37.2°F (2.9°C)	-3.3°F (-1.8°C)	120th Warmest	Warmest since: 1954	1934, 1992
	Ties: 1944
Feb–Apr 1955 3-Month	28.2°F (-2.1°C)	33.3°F (0.7°C)	-5.1°F (-2.8°C)	3rd Coolest	Coolest since: 1917	1903
Feb–Apr 1955 3-Month	28.2°F (-2.1°C)	33.3°F (0.7°C)	-5.1°F (-2.8°C)	126th Warmest	Warmest since: 1954	1934
Jan–Apr 1955 4-Month	25.7°F (-3.5°C)	30.3°F (-0.9°C)	-4.6°F (-2.6°C)	5th Coolest	Coolest since: 1937	1917
Jan–Apr 1955 4-Month	25.7°F (-3.5°C)	30.3°F (-0.9°C)	-4.6°F (-2.6°C)	124th Warmest	Warmest since: 1954	1934
Dec 1954–Apr 1955 5-Month	24.7°F (-4.1°C)	28.8°F (-1.8°C)	-4.1°F (-2.3°C)	7th Coolest	Coolest since: 1933	1917
Dec 1954–Apr 1955 5-Month	24.7°F (-4.1°C)	28.8°F (-1.8°C)	-4.1°F (-2.3°C)	121st Warmest	Warmest since: 1954	1934
Nov 1954–Apr 1955 6-Month	26.7°F (-2.9°C)	29.4°F (-1.4°C)	-2.7°F (-1.5°C)	13th Coolest	Coolest since: 1952	1917
	26.7°F (-2.9°C)	29.4°F (-1.4°C)	-2.7°F (-1.5°C)	115th Warmest	Warmest since: 1954	1934
	Ties: 1896, 1898, 1920
Oct 1954–Apr 1955 7-Month	29.6°F (-1.3°C)	31.6°F (-0.2°C)	-2.0°F (-1.1°C)	19th Coolest	Coolest since: 1952	1917
Oct 1954–Apr 1955 7-Month	29.6°F (-1.3°C)	31.6°F (-0.2°C)	-2.0°F (-1.1°C)	109th Warmest	Warmest since: 1954	1934
Sep 1954–Apr 1955 8-Month	33.2°F (0.7°C)	34.8°F (1.6°C)	-1.6°F (-0.9°C)	21st Coolest	Coolest since: 1952	1917
	33.2°F (0.7°C)	34.8°F (1.6°C)	-1.6°F (-0.9°C)	107th Warmest	Warmest since: 1954	1934
	Ties: 1919
Aug 1954–Apr 1955 9-Month	36.6°F (2.6°C)	38.1°F (3.4°C)	-1.5°F (-0.8°C)	22nd Coolest	Coolest since: 1952	1917
Aug 1954–Apr 1955 9-Month	36.6°F (2.6°C)	38.1°F (3.4°C)	-1.5°F (-0.8°C)	106th Warmest	Warmest since: 1954	1934
Jul 1954–Apr 1955 10-Month	39.9°F (4.4°C)	41.0°F (5.0°C)	-1.1°F (-0.6°C)	24th Coolest	Coolest since: 1952	1917
	39.9°F (4.4°C)	41.0°F (5.0°C)	-1.1°F (-0.6°C)	104th Warmest	Warmest since: 1954	1934
	Ties: 1925, 1969
Jun 1954–Apr 1955 11-Month	41.8°F (5.4°C)	42.7°F (5.9°C)	-0.9°F (-0.5°C)	25th Coolest	Coolest since: 1952	1917
	41.8°F (5.4°C)	42.7°F (5.9°C)	-0.9°F (-0.5°C)	103rd Warmest	Warmest since: 1954	1934
	Ties: 1925, 1948, 1962, 1969
May 1954–Apr 1955 12-Month	42.8°F (6.0°C)	43.4°F (6.3°C)	-0.6°F (-0.3°C)	35th Coolest	Coolest since: 1952	1917
	42.8°F (6.0°C)	43.4°F (6.3°C)	-0.6°F (-0.3°C)	93rd Warmest	Warmest since: 1954	1934, 2015, 2018
	Ties: 1922, 1948, 1968, 1974
Nov 1953–Apr 1955 18-Month	39.4°F (4.1°C)	38.7°F (3.7°C)	0.7°F (0.4°C)	81st Coolest	Coolest since: 1953	1913
	39.4°F (4.1°C)	38.7°F (3.7°C)	0.7°F (0.4°C)	46th Warmest	Warmest since: 1954	2018
	Ties: 1902, 1927, 1936, 1944, 1961, 1992, 2011
May 1953–Apr 1955 24-Month	44.0°F (6.7°C)	43.4°F (6.3°C)	0.6°F (0.4°C)	83rd Coolest	Coolest since: 1953	1913
	44.0°F (6.7°C)	43.4°F (6.3°C)	0.6°F (0.4°C)	44th Warmest	Warmest since: 1954	2018
	Ties: 1934, 1940, 1961, 1983, 2011
May 1952–Apr 1955 36-Month	44.0°F (6.7°C)	43.4°F (6.3°C)	0.6°F (0.4°C)	81st Coolest	Coolest since: 1954	1914
	44.0°F (6.7°C)	43.4°F (6.3°C)	0.6°F (0.4°C)	45th Warmest	Warmest since: 1942	2017, 2018, 2019
	Ties: 1942, 1956, 1959
May 1951–Apr 1955 48-Month	43.4°F (6.3°C)	43.4°F (6.3°C)	0.0°F (0.0°C)	53rd Coolest	Coolest since: 1953	1899, 1915
	43.4°F (6.3°C)	43.4°F (6.3°C)	0.0°F (0.0°C)	72nd Warmest	Warmest since: 1954	2018
	Ties: 1945, 1965, 1966, 1970
May 1950–Apr 1955 60-Month	43.4°F (6.3°C)	43.3°F (6.3°C)	0.1°F (0.0°C)	51st Coolest	Coolest since: 1953	1917
	43.4°F (6.3°C)	43.3°F (6.3°C)	0.1°F (0.0°C)	73rd Warmest	Warmest since: 1954	2018, 2019
	Ties: 1946, 1948, 1971

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published January 2023, retrieved on February 7, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings