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 1951

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
May 1951 1-Month	61.3°F (16.3°C)	60.7°F (15.9°C)	0.6°F (0.4°C)	67th Coolest	Coolest since: 1950	1977
	61.3°F (16.3°C)	60.7°F (15.9°C)	0.6°F (0.4°C)	62nd Warmest	Warmest since: 1947	2001
	Ties: 1895, 1983, 1994
Apr–May 1951 2-Month	58.2°F (14.6°C)	57.4°F (14.1°C)	0.8°F (0.5°C)	74th Coolest	Coolest since: 1948	1967
Apr–May 1951 2-Month	58.2°F (14.6°C)	57.4°F (14.1°C)	0.8°F (0.5°C)	55th Warmest	Warmest since: 1950	1992
Mar–May 1951 3-Month	54.8°F (12.7°C)	54.5°F (12.5°C)	0.3°F (0.2°C)	71st Coolest	Coolest since: 1949	1917
Mar–May 1951 3-Month	54.8°F (12.7°C)	54.5°F (12.5°C)	0.3°F (0.2°C)	58th Warmest	Warmest since: 1950	1934
Feb–May 1951 4-Month	52.3°F (11.3°C)	52.2°F (11.2°C)	0.1°F (0.1°C)	61st Coolest	Coolest since: 1949	1917
	52.3°F (11.3°C)	52.2°F (11.2°C)	0.1°F (0.1°C)	68th Warmest	Warmest since: 1950	1934
	Ties: 1905, 2003
Jan–May 1951 5-Month	50.2°F (10.1°C)	50.2°F (10.1°C)	0.0°F (0.0°C)	65th Coolest	Coolest since: 1950	1917
	50.2°F (10.1°C)	50.2°F (10.1°C)	0.0°F (0.0°C)	64th Warmest	Warmest since: 1947	2015
	Ties: 1904, 1960, 1983
Dec 1950–May 1951 6-Month	49.9°F (9.9°C)	49.1°F (9.5°C)	0.8°F (0.4°C)	83rd Coolest	Coolest since: 1950	1917
	49.9°F (9.9°C)	49.1°F (9.5°C)	0.8°F (0.4°C)	45th Warmest	Warmest since: 1947	2015
	Ties: 1988, 1989, 2002
Nov 1950–May 1951 7-Month	50.4°F (10.2°C)	49.1°F (9.5°C)	1.3°F (0.7°C)	98th Coolest	Coolest since: 1950	1917
	50.4°F (10.2°C)	49.1°F (9.5°C)	1.3°F (0.7°C)	30th Warmest	Warmest since: 1943	2015
	Ties: 2006, 2012
Oct 1950–May 1951 8-Month	51.8°F (11.0°C)	50.4°F (10.2°C)	1.4°F (0.8°C)	103rd Coolest	Coolest since: 1950	1917
	51.8°F (11.0°C)	50.4°F (10.2°C)	1.4°F (0.8°C)	25th Warmest	Warmest since: 1940	2015
	Ties: 1931, 1987, 2002
Sep 1950–May 1951 9-Month	53.6°F (12.0°C)	52.4°F (11.3°C)	1.2°F (0.7°C)	100th Coolest	Coolest since: 1950	1917
	53.6°F (12.0°C)	52.4°F (11.3°C)	1.2°F (0.7°C)	28th Warmest	Warmest since: 1940	2015
	Ties: 1968, 1980, 1988, 1994
Aug 1950–May 1951 10-Month	55.7°F (13.2°C)	54.6°F (12.6°C)	1.1°F (0.6°C)	99th Coolest	Coolest since: 1950	1917
	55.7°F (13.2°C)	54.6°F (12.6°C)	1.1°F (0.6°C)	29th Warmest	Warmest since: 1940	2015
	Ties: 1988
Jul 1950–May 1951 11-Month	57.5°F (14.2°C)	56.4°F (13.6°C)	1.1°F (0.6°C)	98th Coolest	Coolest since: 1950	1917
Jul 1950–May 1951 11-Month	57.5°F (14.2°C)	56.4°F (13.6°C)	1.1°F (0.6°C)	30th Warmest	Warmest since: 1940	2015
Jun 1950–May 1951 12-Month	58.3°F (14.6°C)	57.4°F (14.1°C)	0.9°F (0.5°C)	98th Coolest	Coolest since: 1950	1917
	58.3°F (14.6°C)	57.4°F (14.1°C)	0.9°F (0.5°C)	30th Warmest	Warmest since: 1943	2015
	Ties: 1943, 1960, 1961, 2001, 2006
Dec 1949–May 1951 18-Month	55.0°F (12.8°C)	54.6°F (12.6°C)	0.4°F (0.2°C)	78th Coolest	Coolest since: 1950	1917
	55.0°F (12.8°C)	54.6°F (12.6°C)	0.4°F (0.2°C)	49th Warmest	Warmest since: 1941	2015
	Ties: 1968, 1991
Jun 1949–May 1951 24-Month	57.8°F (14.3°C)	57.4°F (14.1°C)	0.4°F (0.2°C)	79th Coolest	Coolest since: 1950	1913, 1917
	57.8°F (14.3°C)	57.4°F (14.1°C)	0.4°F (0.2°C)	48th Warmest	Warmest since: 1941	2015
	Ties: 1968, 1991, 1995
Jun 1948–May 1951 36-Month	56.9°F (13.8°C)	57.4°F (14.1°C)	-0.5°F (-0.3°C)	24th Coolest	Coolest since: 1950	1913, 1917
	56.9°F (13.8°C)	57.4°F (14.1°C)	-0.5°F (-0.3°C)	102nd Warmest	Warmest since: 1948	2016
	Ties: 1900, 1905, 1933, 1966, 1973, 1975
Jun 1947–May 1951 48-Month	56.7°F (13.7°C)	57.4°F (14.1°C)	-0.7°F (-0.4°C)	18th Coolest	Coolest since: 1950	1913
	56.7°F (13.7°C)	57.4°F (14.1°C)	-0.7°F (-0.4°C)	107th Warmest	Warmest since: 1948	2016, 2017, 2018
	Ties: 1899, 1903, 1916
Jun 1946–May 1951 60-Month	56.9°F (13.8°C)	57.3°F (14.1°C)	-0.4°F (-0.3°C)	26th Coolest	Coolest since: 1950	1913, 1917
	56.9°F (13.8°C)	57.3°F (14.1°C)	-0.4°F (-0.3°C)	98th Warmest	Warmest since: 1947	2018
	Ties: 1900, 1901, 1906, 1907, 1953, 1956

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