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.

California River Basin

Average Temperature Rankings, May 1957

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
May 1957 1-Month	58.9°F (14.9°C)	60.7°F (15.9°C)	-1.8°F (-1.0°C)	32nd Coolest	Coolest since: 1953	1977
	58.9°F (14.9°C)	60.7°F (15.9°C)	-1.8°F (-1.0°C)	97th Warmest	Warmest since: 1956	2001
	Ties: 1896
Apr–May 1957 2-Month	56.4°F (13.6°C)	57.3°F (14.1°C)	-0.9°F (-0.5°C)	41st Coolest	Coolest since: 1955	1967
	56.4°F (13.6°C)	57.3°F (14.1°C)	-0.9°F (-0.5°C)	88th Warmest	Warmest since: 1956	1992
	Ties: 1927, 1930, 1980
Mar–May 1957 3-Month	54.2°F (12.3°C)	54.5°F (12.5°C)	-0.3°F (-0.2°C)	56th Coolest	Coolest since: 1955	1917
Mar–May 1957 3-Month	54.2°F (12.3°C)	54.5°F (12.5°C)	-0.3°F (-0.2°C)	73rd Warmest	Warmest since: 1956	1934
Feb–May 1957 4-Month	52.7°F (11.5°C)	52.2°F (11.2°C)	0.5°F (0.3°C)	73rd Coolest	Coolest since: 1956	1917
	52.7°F (11.5°C)	52.2°F (11.2°C)	0.5°F (0.3°C)	56th Warmest	Warmest since: 1954	1934
	Ties: 1960
Jan–May 1957 5-Month	49.9°F (9.9°C)	50.3°F (10.2°C)	-0.4°F (-0.3°C)	50th Coolest	Coolest since: 1956	1917
	49.9°F (9.9°C)	50.3°F (10.2°C)	-0.4°F (-0.3°C)	79th Warmest	Warmest since: 1954	2015
	Ties: 1895, 1950
Dec 1956–May 1957 6-Month	48.9°F (9.4°C)	49.1°F (9.5°C)	-0.2°F (-0.1°C)	51st Coolest	Coolest since: 1956	1917
	48.9°F (9.4°C)	49.1°F (9.5°C)	-0.2°F (-0.1°C)	77th Warmest	Warmest since: 1956	2015
	Ties: 1907, 1916, 1956, 1983, 1985
Nov 1956–May 1957 7-Month	49.0°F (9.4°C)	49.1°F (9.5°C)	-0.1°F (-0.1°C)	54th Coolest	Coolest since: 1956	1917
	49.0°F (9.4°C)	49.1°F (9.5°C)	-0.1°F (-0.1°C)	74th Warmest	Warmest since: 1954	2015
	Ties: 1910, 2011
Oct 1956–May 1957 8-Month	50.0°F (10.0°C)	50.4°F (10.2°C)	-0.4°F (-0.2°C)	40th Coolest	Coolest since: 1955	1917
	50.0°F (10.0°C)	50.4°F (10.2°C)	-0.4°F (-0.2°C)	88th Warmest	Warmest since: 1956	2015
	Ties: 1972, 1995, 2010
Sep 1956–May 1957 9-Month	52.3°F (11.3°C)	52.4°F (11.3°C)	-0.1°F (0.0°C)	51st Coolest	Coolest since: 1955	1917
	52.3°F (11.3°C)	52.4°F (11.3°C)	-0.1°F (0.0°C)	77th Warmest	Warmest since: 1956	2015
	Ties: 1927, 1935, 1991
Aug 1956–May 1957 10-Month	54.2°F (12.3°C)	54.6°F (12.6°C)	-0.4°F (-0.3°C)	41st Coolest	Coolest since: 1955	1917
	54.2°F (12.3°C)	54.6°F (12.6°C)	-0.4°F (-0.3°C)	87th Warmest	Warmest since: 1956	2015
	Ties: 1925, 1974, 1977
Jul 1956–May 1957 11-Month	56.0°F (13.3°C)	56.4°F (13.6°C)	-0.4°F (-0.3°C)	39th Coolest	Coolest since: 1955	1917
	56.0°F (13.3°C)	56.4°F (13.6°C)	-0.4°F (-0.3°C)	89th Warmest	Warmest since: 1956	2015
	Ties: 1897, 1902, 1916, 1923
Jun 1956–May 1957 12-Month	57.1°F (13.9°C)	57.4°F (14.1°C)	-0.3°F (-0.2°C)	40th Coolest	Coolest since: 1956	1917
	57.1°F (13.9°C)	57.4°F (14.1°C)	-0.3°F (-0.2°C)	88th Warmest	Warmest since: 1956	2015
	Ties: 1907, 1923, 1924, 1925, 1956, 1966, 1967, 1998, 1999
Dec 1955–May 1957 18-Month	54.3°F (12.4°C)	54.6°F (12.6°C)	-0.3°F (-0.2°C)	38th Coolest	Coolest since: 1956	1917
	54.3°F (12.4°C)	54.6°F (12.6°C)	-0.3°F (-0.2°C)	89th Warmest	Warmest since: 1954	2015
	Ties: 1897, 1907, 1914, 1924, 1948, 1975
Jun 1955–May 1957 24-Month	57.1°F (13.9°C)	57.4°F (14.1°C)	-0.3°F (-0.2°C)	37th Coolest	Coolest since: 1956	1913, 1917
	57.1°F (13.9°C)	57.4°F (14.1°C)	-0.3°F (-0.2°C)	90th Warmest	Warmest since: 1954	2015
	Ties: 1924, 1925, 1930, 1942, 1967, 1972, 1975, 1976, 1977, 1999
Jun 1954–May 1957 36-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, 1917
	56.7°F (13.7°C)	57.4°F (14.1°C)	-0.7°F (-0.4°C)	108th Warmest	Warmest since: 1956	2016
	Ties: 1898, 1908
Jun 1953–May 1957 48-Month	57.0°F (13.9°C)	57.4°F (14.1°C)	-0.4°F (-0.2°C)	32nd Coolest	Coolest since: 1956	1913
	57.0°F (13.9°C)	57.4°F (14.1°C)	-0.4°F (-0.2°C)	93rd Warmest	Warmest since: 1956	2016, 2017, 2018
	Ties: 1900, 1902, 1908, 1947, 1956, 1967, 1974, 1975, 1976
Jun 1952–May 1957 60-Month	57.0°F (13.9°C)	57.3°F (14.1°C)	-0.3°F (-0.2°C)	33rd Coolest	Coolest since: 1956	1913, 1917
	57.0°F (13.9°C)	57.3°F (14.1°C)	-0.3°F (-0.2°C)	91st Warmest	Warmest since: 1955	2018
	Ties: 1908, 1933, 1946, 1975, 1976, 1977

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published February 2023, retrieved on February 8, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings