Regional Rankings

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Month:

Region:

Please note, Palmer Indices are not available for NWS Regions. Degree Days are not available for Great Plains, Souther Plains and Gulf Coast Rockies and Westward, River Basins, or Agricultural Belts. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

California River Basin

Average Temperature Rankings, May 2010

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
May 2010 1-Month	56.9°F (13.8°C)	60.7°F (15.9°C)	-3.8°F (-2.1°C)	9th Coolest	Coolest since: 1998	1977
	56.9°F (13.8°C)	60.7°F (15.9°C)	-3.8°F (-2.1°C)	120th Warmest	Warmest since: 2009	2001
	Ties: 1905
Apr–May 2010 2-Month	53.9°F (12.2°C)	57.4°F (14.1°C)	-3.5°F (-1.9°C)	4th Coolest	Coolest since: 1998	1967
Apr–May 2010 2-Month	53.9°F (12.2°C)	57.4°F (14.1°C)	-3.5°F (-1.9°C)	125th Warmest	Warmest since: 2009	1992
Mar–May 2010 3-Month	52.3°F (11.3°C)	54.5°F (12.5°C)	-2.2°F (-1.2°C)	12th Coolest	Coolest since: 1998	1917
	52.3°F (11.3°C)	54.5°F (12.5°C)	-2.2°F (-1.2°C)	117th Warmest	Warmest since: 2009	1934
	Ties: 1933, 1964
Feb–May 2010 4-Month	50.9°F (10.5°C)	52.2°F (11.2°C)	-1.3°F (-0.7°C)	25th Coolest	Coolest since: 1998	1917
	50.9°F (10.5°C)	52.2°F (11.2°C)	-1.3°F (-0.7°C)	104th Warmest	Warmest since: 2009	1934
	Ties: 1899, 1920, 1938, 1949, 1956
Jan–May 2010 5-Month	49.8°F (9.9°C)	50.2°F (10.1°C)	-0.4°F (-0.2°C)	45th Coolest	Coolest since: 1999	1917
	49.8°F (9.9°C)	50.2°F (10.1°C)	-0.4°F (-0.2°C)	84th Warmest	Warmest since: 2009	2015
	Ties: 1973, 1974, 1979, 1999
Dec 2009–May 2010 6-Month	48.4°F (9.1°C)	49.1°F (9.5°C)	-0.7°F (-0.4°C)	36th Coolest	Coolest since: 1998	1917
	48.4°F (9.1°C)	49.1°F (9.5°C)	-0.7°F (-0.4°C)	92nd Warmest	Warmest since: 2009	2015
	Ties: 1945, 1950
Nov 2009–May 2010 7-Month	48.8°F (9.3°C)	49.1°F (9.5°C)	-0.3°F (-0.2°C)	50th Coolest	Coolest since: 1999	1917
	48.8°F (9.3°C)	49.1°F (9.5°C)	-0.3°F (-0.2°C)	78th Warmest	Warmest since: 2009	2015
	Ties: 1916, 1956, 1974
Oct 2009–May 2010 8-Month	50.0°F (10.0°C)	50.4°F (10.2°C)	-0.4°F (-0.2°C)	40th Coolest	Coolest since: 1999	1917
	50.0°F (10.0°C)	50.4°F (10.2°C)	-0.4°F (-0.2°C)	88th Warmest	Warmest since: 2009	2015
	Ties: 1972, 1995
Sep 2009–May 2010 9-Month	52.5°F (11.4°C)	52.4°F (11.3°C)	0.1°F (0.1°C)	60th Coolest	Coolest since: 1999	1917
	52.5°F (11.4°C)	52.4°F (11.3°C)	0.1°F (0.1°C)	68th Warmest	Warmest since: 2009	2015
	Ties: 1904, 1950, 1976, 1977
Aug 2009–May 2010 10-Month	54.7°F (12.6°C)	54.6°F (12.6°C)	0.1°F (0.0°C)	68th Coolest	Coolest since: 1999	1917
	54.7°F (12.6°C)	54.6°F (12.6°C)	0.1°F (0.0°C)	60th Warmest	Warmest since: 2009	2015
	Ties: 1900, 1939, 1956, 1966, 2011
Jul 2009–May 2010 11-Month	56.8°F (13.8°C)	56.4°F (13.6°C)	0.4°F (0.2°C)	75th Coolest	Coolest since: 1999	1917
	56.8°F (13.8°C)	56.4°F (13.6°C)	0.4°F (0.2°C)	53rd Warmest	Warmest since: 2009	2015
	Ties: 1926, 1982
Jun 2009–May 2010 12-Month	57.7°F (14.3°C)	57.4°F (14.1°C)	0.3°F (0.2°C)	72nd Coolest	Coolest since: 1999	1917
	57.7°F (14.3°C)	57.4°F (14.1°C)	0.3°F (0.2°C)	56th Warmest	Warmest since: 2009	2015
	Ties: 1927, 1928, 1939, 1963, 1995, 2011
Dec 2008–May 2010 18-Month	55.4°F (13.0°C)	54.6°F (12.6°C)	0.8°F (0.4°C)	90th Coolest	Coolest since: 1999	1917
	55.4°F (13.0°C)	54.6°F (12.6°C)	0.8°F (0.4°C)	37th Warmest	Warmest since: 2009	2015
	Ties: 1978, 1985, 1986, 2012
Jun 2008–May 2010 24-Month	58.7°F (14.8°C)	57.4°F (14.1°C)	1.3°F (0.7°C)	106th Coolest	Coolest since: 2006	1913, 1917
	58.7°F (14.8°C)	57.4°F (14.1°C)	1.3°F (0.7°C)	21st Warmest	Warmest since: 2009	2015
	Ties: 1935, 1941, 1996
Jun 2007–May 2010 36-Month	58.5°F (14.7°C)	57.4°F (14.1°C)	1.1°F (0.6°C)	103rd Coolest	Coolest since: 2001	1913, 1917
	58.5°F (14.7°C)	57.4°F (14.1°C)	1.1°F (0.6°C)	23rd Warmest	Warmest since: 2009	2016
	Ties: 1993, 1996
Jun 2006–May 2010 48-Month	58.7°F (14.8°C)	57.4°F (14.1°C)	1.3°F (0.7°C)	108th Coolest	Coolest since: 2008	1913
Jun 2006–May 2010 48-Month	58.7°F (14.8°C)	57.4°F (14.1°C)	1.3°F (0.7°C)	17th Warmest	Warmest since: 2009	2016, 2017, 2018
Jun 2005–May 2010 60-Month	58.6°F (14.8°C)	57.3°F (14.1°C)	1.3°F (0.7°C)	107th Coolest	Coolest since: 2003	1913, 1917
	58.6°F (14.8°C)	57.3°F (14.1°C)	1.3°F (0.7°C)	17th Warmest	Warmest since: 2009	2018
	Ties: 1996, 2000, 2013

Citing This Page

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