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 1903

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
April 1903 1-Month	40.2°F (4.6°C)	41.7°F (5.4°C)	-1.5°F (-0.8°C)	32nd Coolest	Coolest since: 1903	1920
	40.2°F (4.6°C)	41.7°F (5.4°C)	-1.5°F (-0.8°C)	97th Warmest	Warmest since: 1902	1992
	Ties: 1937, 1974
Mar–Apr 1903 2-Month	35.0°F (1.7°C)	37.2°F (2.9°C)	-2.2°F (-1.2°C)	22nd Coolest	Coolest since: 1897	1917
Mar–Apr 1903 2-Month	35.0°F (1.7°C)	37.2°F (2.9°C)	-2.2°F (-1.2°C)	107th Warmest	Warmest since: 1902	1934, 1992
Feb–Apr 1903 3-Month	27.3°F (-2.6°C)	33.4°F (0.8°C)	-6.1°F (-3.4°C)	1st Coolest	Coolest since: 1903	1903
Feb–Apr 1903 3-Month	27.3°F (-2.6°C)	33.4°F (0.8°C)	-6.1°F (-3.4°C)	128th Warmest	Warmest since: 1902	1934
Jan–Apr 1903 4-Month	25.4°F (-3.7°C)	30.3°F (-0.9°C)	-4.9°F (-2.8°C)	3rd Coolest	Coolest since: 1903	1917
Jan–Apr 1903 4-Month	25.4°F (-3.7°C)	30.3°F (-0.9°C)	-4.9°F (-2.8°C)	126th Warmest	Warmest since: 1902	1934
Dec 1902–Apr 1903 5-Month	24.4°F (-4.2°C)	28.8°F (-1.8°C)	-4.4°F (-2.4°C)	5th Coolest	Coolest since: 1903	1917
Dec 1902–Apr 1903 5-Month	24.4°F (-4.2°C)	28.8°F (-1.8°C)	-4.4°F (-2.4°C)	123rd Warmest	Warmest since: 1902	1934
Nov 1902–Apr 1903 6-Month	25.6°F (-3.6°C)	29.4°F (-1.4°C)	-3.8°F (-2.2°C)	5th Coolest	Coolest since: 1903	1917
Nov 1902–Apr 1903 6-Month	25.6°F (-3.6°C)	29.4°F (-1.4°C)	-3.8°F (-2.2°C)	123rd Warmest	Warmest since: 1902	1934
Oct 1902–Apr 1903 7-Month	28.4°F (-2.0°C)	31.6°F (-0.2°C)	-3.2°F (-1.8°C)	4th Coolest	Coolest since: 1903	1917
	28.4°F (-2.0°C)	31.6°F (-0.2°C)	-3.2°F (-1.8°C)	124th Warmest	Warmest since: 1902	1934
	Ties: 1929, 1952
Sep 1902–Apr 1903 8-Month	31.8°F (-0.1°C)	34.8°F (1.6°C)	-3.0°F (-1.7°C)	5th Coolest	Coolest since: 1903	1917
Sep 1902–Apr 1903 8-Month	31.8°F (-0.1°C)	34.8°F (1.6°C)	-3.0°F (-1.7°C)	123rd Warmest	Warmest since: 1902	1934
Aug 1902–Apr 1903 9-Month	35.3°F (1.8°C)	38.1°F (3.4°C)	-2.8°F (-1.6°C)	5th Coolest	Coolest since: 1903	1917
	35.3°F (1.8°C)	38.1°F (3.4°C)	-2.8°F (-1.6°C)	123rd Warmest	Warmest since: 1902	1934
	Ties: 1929
Jul 1902–Apr 1903 10-Month	38.1°F (3.4°C)	41.0°F (5.0°C)	-2.9°F (-1.6°C)	3rd Coolest	Coolest since: 1903	1917
Jul 1902–Apr 1903 10-Month	38.1°F (3.4°C)	41.0°F (5.0°C)	-2.9°F (-1.6°C)	125th Warmest	Warmest since: 1902	1934
Jun 1902–Apr 1903 11-Month	40.3°F (4.6°C)	42.7°F (5.9°C)	-2.4°F (-1.3°C)	5th Coolest	Coolest since: 1903	1917
Jun 1902–Apr 1903 11-Month	40.3°F (4.6°C)	42.7°F (5.9°C)	-2.4°F (-1.3°C)	123rd Warmest	Warmest since: 1902	1934
May 1902–Apr 1903 12-Month	41.2°F (5.1°C)	43.4°F (6.3°C)	-2.2°F (-1.2°C)	5th Coolest	Coolest since: 1903	1917
May 1902–Apr 1903 12-Month	41.2°F (5.1°C)	43.4°F (6.3°C)	-2.2°F (-1.2°C)	123rd Warmest	Warmest since: 1902	1934, 2015, 2018
Nov 1901–Apr 1903 18-Month	37.6°F (3.1°C)	38.8°F (3.8°C)	-1.2°F (-0.7°C)	19th Coolest	Coolest since: 1900	1913
	37.6°F (3.1°C)	38.8°F (3.8°C)	-1.2°F (-0.7°C)	108th Warmest	Warmest since: 1902	2018
	Ties: 1910, 1932, 1985
May 1901–Apr 1903 24-Month	42.7°F (5.9°C)	43.4°F (6.3°C)	-0.7°F (-0.4°C)	26th Coolest	Coolest since: 1900	1913
	42.7°F (5.9°C)	43.4°F (6.3°C)	-0.7°F (-0.4°C)	101st Warmest	Warmest since: 1902	2018
	Ties: 1916, 1931, 1953, 1985
May 1900–Apr 1903 36-Month	42.9°F (6.1°C)	43.4°F (6.3°C)	-0.5°F (-0.2°C)	32nd Coolest	Coolest since: 1901	1914
	42.9°F (6.1°C)	43.4°F (6.3°C)	-0.5°F (-0.2°C)	94th Warmest	Warmest since: 1902	2017, 2018, 2019
	Ties: 1908, 1911, 1949, 1952, 1976, 1985
May 1899–Apr 1903 48-Month	43.0°F (6.1°C)	43.4°F (6.3°C)	-0.4°F (-0.2°C)	33rd Coolest	Coolest since: 1901	1899, 1915
	43.0°F (6.1°C)	43.4°F (6.3°C)	-0.4°F (-0.2°C)	92nd Warmest	Warmest since: 1902	2018
	Ties: 1908, 1927, 1929
May 1898–Apr 1903 60-Month	42.7°F (5.9°C)	43.4°F (6.3°C)	-0.7°F (-0.4°C)	18th Coolest	Coolest since: 1901	1917
	42.7°F (5.9°C)	43.4°F (6.3°C)	-0.7°F (-0.4°C)	106th Warmest	Warmest since: 1902	2018, 2019
	Ties: 1906, 1922, 1923, 1925, 1952, 1976

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published January 2023, retrieved on February 2, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings