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 1998

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
April 1998 1-Month	40.4°F (4.7°C)	41.7°F (5.4°C)	-1.3°F (-0.7°C)	36th Coolest	Coolest since: 1997	1920
	40.4°F (4.7°C)	41.7°F (5.4°C)	-1.3°F (-0.7°C)	93rd Warmest	Warmest since: 1996	1992
	Ties: 1967, 1995, 2011, 2013
Mar–Apr 1998 2-Month	36.9°F (2.7°C)	37.2°F (2.9°C)	-0.3°F (-0.2°C)	51st Coolest	Coolest since: 1991	1917
	36.9°F (2.7°C)	37.2°F (2.9°C)	-0.3°F (-0.2°C)	78th Warmest	Warmest since: 1997	1934, 1992
	Ties: 1953, 1957
Feb–Apr 1998 3-Month	33.7°F (0.9°C)	33.4°F (0.8°C)	0.3°F (0.1°C)	69th Coolest	Coolest since: 1997	1903
	33.7°F (0.9°C)	33.4°F (0.8°C)	0.3°F (0.1°C)	60th Warmest	Warmest since: 1996	1934
	Ties: 1941, 1962, 1976, 1993
Jan–Apr 1998 4-Month	32.0°F (0.0°C)	30.3°F (-0.9°C)	1.7°F (0.9°C)	94th Coolest	Coolest since: 1997	1917
Jan–Apr 1998 4-Month	32.0°F (0.0°C)	30.3°F (-0.9°C)	1.7°F (0.9°C)	35th Warmest	Warmest since: 1996	1934
Dec 1997–Apr 1998 5-Month	30.1°F (-1.1°C)	28.8°F (-1.8°C)	1.3°F (0.7°C)	88th Coolest	Coolest since: 1997	1917
	30.1°F (-1.1°C)	28.8°F (-1.8°C)	1.3°F (0.7°C)	40th Warmest	Warmest since: 1996	1934
	Ties: 1935, 1951, 1977
Nov 1997–Apr 1998 6-Month	30.5°F (-0.8°C)	29.4°F (-1.4°C)	1.1°F (0.6°C)	86th Coolest	Coolest since: 1997	1917
	30.5°F (-0.8°C)	29.4°F (-1.4°C)	1.1°F (0.6°C)	42nd Warmest	Warmest since: 1996	1934
	Ties: 1982
Oct 1997–Apr 1998 7-Month	32.5°F (0.3°C)	31.6°F (-0.2°C)	0.9°F (0.5°C)	83rd Coolest	Coolest since: 1997	1917
	32.5°F (0.3°C)	31.6°F (-0.2°C)	0.9°F (0.5°C)	45th Warmest	Warmest since: 1996	1934
	Ties: 1956, 1961, 2020
Sep 1997–Apr 1998 8-Month	35.8°F (2.1°C)	34.8°F (1.6°C)	1.0°F (0.5°C)	88th Coolest	Coolest since: 1997	1917
	35.8°F (2.1°C)	34.8°F (1.6°C)	1.0°F (0.5°C)	40th Warmest	Warmest since: 1996	1934
	Ties: 1918, 1967, 1982, 2001, 2013
Aug 1997–Apr 1998 9-Month	39.0°F (3.9°C)	38.1°F (3.4°C)	0.9°F (0.5°C)	82nd Coolest	Coolest since: 1997	1917
Aug 1997–Apr 1998 9-Month	39.0°F (3.9°C)	38.1°F (3.4°C)	0.9°F (0.5°C)	46th Warmest	Warmest since: 1996	1934
Jul 1997–Apr 1998 10-Month	41.7°F (5.4°C)	40.9°F (4.9°C)	0.8°F (0.5°C)	80th Coolest	Coolest since: 1994	1917
	41.7°F (5.4°C)	40.9°F (4.9°C)	0.8°F (0.5°C)	48th Warmest	Warmest since: 1997	1934
	Ties: 1918
Jun 1997–Apr 1998 11-Month	43.6°F (6.4°C)	42.8°F (6.0°C)	0.8°F (0.4°C)	84th Coolest	Coolest since: 1994	1917
	43.6°F (6.4°C)	42.8°F (6.0°C)	0.8°F (0.4°C)	44th Warmest	Warmest since: 1997	1934
	Ties: 1941, 2008
May 1997–Apr 1998 12-Month	44.4°F (6.9°C)	43.4°F (6.3°C)	1.0°F (0.6°C)	86th Coolest	Coolest since: 1994	1917
	44.4°F (6.9°C)	43.4°F (6.3°C)	1.0°F (0.6°C)	42nd Warmest	Warmest since: 1997	1934, 2015, 2018
	Ties: 1907, 2008, 2011, 2020
Nov 1996–Apr 1998 18-Month	39.7°F (4.3°C)	38.7°F (3.7°C)	1.0°F (0.6°C)	90th Coolest	Coolest since: 1994	1913
	39.7°F (4.3°C)	38.7°F (3.7°C)	1.0°F (0.6°C)	37th Warmest	Warmest since: 1997	2018
	Ties: 1934, 1989
May 1996–Apr 1998 24-Month	44.5°F (6.9°C)	43.4°F (6.3°C)	1.1°F (0.6°C)	93rd Coolest	Coolest since: 1994	1913
	44.5°F (6.9°C)	43.4°F (6.3°C)	1.1°F (0.6°C)	34th Warmest	Warmest since: 1997	2018
	Ties: 1991, 2010
May 1995–Apr 1998 36-Month	44.6°F (7.0°C)	43.4°F (6.3°C)	1.2°F (0.7°C)	96th Coolest	Coolest since: 1995	1914
May 1995–Apr 1998 36-Month	44.6°F (7.0°C)	43.4°F (6.3°C)	1.2°F (0.7°C)	30th Warmest	Warmest since: 1997	2017, 2018, 2019
May 1994–Apr 1998 48-Month	44.9°F (7.2°C)	43.3°F (6.3°C)	1.6°F (0.9°C)	105th Coolest	Coolest since: 1997	1899, 1915
May 1994–Apr 1998 48-Month	44.9°F (7.2°C)	43.3°F (6.3°C)	1.6°F (0.9°C)	20th Warmest	Warmest to Date	2018
May 1993–Apr 1998 60-Month	44.7°F (7.1°C)	43.4°F (6.3°C)	1.3°F (0.8°C)	101st Coolest	Coolest since: 1997	1917
	44.7°F (7.1°C)	43.4°F (6.3°C)	1.3°F (0.8°C)	23rd Warmest	Warmest since: 1990	2018, 2019
	Ties: 1938, 1990, 2012

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published January 2023, retrieved on January 31, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings