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 1915

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
April 1915 1-Month	46.2°F (7.9°C)	41.7°F (5.4°C)	4.5°F (2.5°C)	118th Coolest	Coolest since: 1914	1920
April 1915 1-Month	46.2°F (7.9°C)	41.7°F (5.4°C)	4.5°F (2.5°C)	11th Warmest	Warmest to Date	1992
Mar–Apr 1915 2-Month	39.2°F (4.0°C)	37.2°F (2.9°C)	2.0°F (1.1°C)	99th Coolest	Coolest since: 1914	1917
	39.2°F (4.0°C)	37.2°F (2.9°C)	2.0°F (1.1°C)	30th Warmest	Warmest since: 1910	1934, 1992
	Ties: 2019, 2021
Feb–Apr 1915 3-Month	34.6°F (1.4°C)	33.3°F (0.7°C)	1.3°F (0.7°C)	85th Coolest	Coolest since: 1914	1903
	34.6°F (1.4°C)	33.3°F (0.7°C)	1.3°F (0.7°C)	44th Warmest	Warmest since: 1910	1934
	Ties: 1961
Jan–Apr 1915 4-Month	30.2°F (-1.0°C)	30.3°F (-0.9°C)	-0.1°F (-0.1°C)	50th Coolest	Coolest since: 1914	1917
	30.2°F (-1.0°C)	30.3°F (-0.9°C)	-0.1°F (-0.1°C)	79th Warmest	Warmest since: 1911	1934
	Ties: 1930, 1963, 1991
Dec 1914–Apr 1915 5-Month	27.7°F (-2.4°C)	28.8°F (-1.8°C)	-1.1°F (-0.6°C)	37th Coolest	Coolest since: 1914	1917
	27.7°F (-2.4°C)	28.8°F (-1.8°C)	-1.1°F (-0.6°C)	91st Warmest	Warmest since: 1911	1934
	Ties: 1923
Nov 1914–Apr 1915 6-Month	28.8°F (-1.8°C)	29.4°F (-1.4°C)	-0.6°F (-0.4°C)	44th Coolest	Coolest since: 1913	1917
Nov 1914–Apr 1915 6-Month	28.8°F (-1.8°C)	29.4°F (-1.4°C)	-0.6°F (-0.4°C)	84th Warmest	Warmest since: 1914	1934
Oct 1914–Apr 1915 7-Month	31.2°F (-0.4°C)	31.7°F (-0.2°C)	-0.5°F (-0.2°C)	42nd Coolest	Coolest since: 1914	1917
	31.2°F (-0.4°C)	31.7°F (-0.2°C)	-0.5°F (-0.2°C)	86th Warmest	Warmest since: 1911	1934
	Ties: 1957, 1965, 2008
Sep 1914–Apr 1915 8-Month	34.4°F (1.3°C)	34.8°F (1.6°C)	-0.4°F (-0.3°C)	42nd Coolest	Coolest since: 1914	1917
	34.4°F (1.3°C)	34.8°F (1.6°C)	-0.4°F (-0.3°C)	86th Warmest	Warmest since: 1911	1934
	Ties: 1930, 1960, 1971
Aug 1914–Apr 1915 9-Month	37.7°F (3.2°C)	38.1°F (3.4°C)	-0.4°F (-0.2°C)	42nd Coolest	Coolest since: 1914	1917
	37.7°F (3.2°C)	38.1°F (3.4°C)	-0.4°F (-0.2°C)	86th Warmest	Warmest since: 1911	1934
	Ties: 1968
Jul 1914–Apr 1915 10-Month	40.4°F (4.7°C)	40.9°F (4.9°C)	-0.5°F (-0.2°C)	35th Coolest	Coolest since: 1914	1917
	40.4°F (4.7°C)	40.9°F (4.9°C)	-0.5°F (-0.2°C)	93rd Warmest	Warmest since: 1911	1934
	Ties: 1985
Jun 1914–Apr 1915 11-Month	42.1°F (5.6°C)	42.7°F (5.9°C)	-0.6°F (-0.3°C)	36th Coolest	Coolest since: 1914	1917
	42.1°F (5.6°C)	42.7°F (5.9°C)	-0.6°F (-0.3°C)	92nd Warmest	Warmest since: 1911	1934
	Ties: 1985
May 1914–Apr 1915 12-Month	43.0°F (6.1°C)	43.4°F (6.3°C)	-0.4°F (-0.2°C)	43rd Coolest	Coolest since: 1914	1917
	43.0°F (6.1°C)	43.4°F (6.3°C)	-0.4°F (-0.2°C)	85th Warmest	Warmest since: 1911	1934, 2015, 2018
	Ties: 1900, 1921, 1965
Nov 1913–Apr 1915 18-Month	38.3°F (3.5°C)	38.7°F (3.7°C)	-0.4°F (-0.2°C)	41st Coolest	Coolest since: 1914	1913
	38.3°F (3.5°C)	38.7°F (3.7°C)	-0.4°F (-0.2°C)	86th Warmest	Warmest since: 1911	2018
	Ties: 1937, 1956, 1975
May 1913–Apr 1915 24-Month	42.8°F (6.0°C)	43.4°F (6.3°C)	-0.6°F (-0.3°C)	31st Coolest	Coolest since: 1914	1913
	42.8°F (6.0°C)	43.4°F (6.3°C)	-0.6°F (-0.3°C)	96th Warmest	Warmest since: 1912	2018
	Ties: 1919, 1950, 1980, 1984
May 1912–Apr 1915 36-Month	42.0°F (5.6°C)	43.4°F (6.3°C)	-1.4°F (-0.7°C)	7th Coolest	Coolest since: 1914	1914
	42.0°F (5.6°C)	43.4°F (6.3°C)	-1.4°F (-0.7°C)	119th Warmest	Warmest since: 1913	2017, 2018, 2019
	Ties: 1899, 1910
May 1911–Apr 1915 48-Month	41.8°F (5.4°C)	43.4°F (6.3°C)	-1.6°F (-0.9°C)	1st Coolest	Coolest since: 1899	1899, 1915
	41.8°F (5.4°C)	43.4°F (6.3°C)	-1.6°F (-0.9°C)	124th Warmest	Warmest since: 1914	2018
	Ties: 1899
May 1910–Apr 1915 60-Month	42.5°F (5.8°C)	43.4°F (6.3°C)	-0.9°F (-0.5°C)	12th Coolest	Coolest since: 1914	1917
	42.5°F (5.8°C)	43.4°F (6.3°C)	-0.9°F (-0.5°C)	112th Warmest	Warmest since: 1912	2018, 2019
	Ties: 1910, 1912, 1932

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published January 2023, retrieved on January 28, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings