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 1928

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
May 1928 1-Month	64.3°F (17.9°C)	60.7°F (15.9°C)	3.6°F (2.0°C)	114th Coolest	Coolest since: 1927	1977
	64.3°F (17.9°C)	60.7°F (15.9°C)	3.6°F (2.0°C)	15th Warmest	Warmest since: 1924	2001
	Ties: 1973
Apr–May 1928 2-Month	59.0°F (15.0°C)	57.4°F (14.1°C)	1.6°F (0.9°C)	91st Coolest	Coolest since: 1927	1967
	59.0°F (15.0°C)	57.4°F (14.1°C)	1.6°F (0.9°C)	38th Warmest	Warmest since: 1926	1992
	Ties: 1943
Mar–May 1928 3-Month	56.6°F (13.7°C)	54.5°F (12.5°C)	2.1°F (1.2°C)	97th Coolest	Coolest since: 1927	1917
	56.6°F (13.7°C)	54.5°F (12.5°C)	2.1°F (1.2°C)	32nd Warmest	Warmest since: 1926	1934
	Ties: 1939, 1990
Feb–May 1928 4-Month	53.9°F (12.2°C)	52.2°F (11.2°C)	1.7°F (1.0°C)	101st Coolest	Coolest since: 1927	1917
	53.9°F (12.2°C)	52.2°F (11.2°C)	1.7°F (1.0°C)	28th Warmest	Warmest since: 1926	1934
	Ties: 1988, 2009, 2018
Jan–May 1928 5-Month	51.8°F (11.0°C)	50.2°F (10.1°C)	1.6°F (0.9°C)	100th Coolest	Coolest since: 1927	1917
	51.8°F (11.0°C)	50.2°F (10.1°C)	1.6°F (0.9°C)	29th Warmest	Warmest since: 1926	2015
	Ties: 1987, 2003
Dec 1927–May 1928 6-Month	50.1°F (10.1°C)	49.1°F (9.5°C)	1.0°F (0.6°C)	90th Coolest	Coolest since: 1927	1917
	50.1°F (10.1°C)	49.1°F (9.5°C)	1.0°F (0.6°C)	38th Warmest	Warmest since: 1926	2015
	Ties: 1914, 1980, 1990
Nov 1927–May 1928 7-Month	50.2°F (10.1°C)	49.1°F (9.5°C)	1.1°F (0.6°C)	93rd Coolest	Coolest since: 1927	1917
	50.2°F (10.1°C)	49.1°F (9.5°C)	1.1°F (0.6°C)	35th Warmest	Warmest since: 1926	2015
	Ties: 1947, 1970, 1994, 2001
Oct 1927–May 1928 8-Month	51.4°F (10.8°C)	50.4°F (10.2°C)	1.0°F (0.6°C)	90th Coolest	Coolest since: 1927	1917
	51.4°F (10.8°C)	50.4°F (10.2°C)	1.0°F (0.6°C)	38th Warmest	Warmest since: 1926	2015
	Ties: 1941, 1968, 1990, 2019
Sep 1927–May 1928 9-Month	52.9°F (11.6°C)	52.4°F (11.3°C)	0.5°F (0.3°C)	77th Coolest	Coolest since: 1927	1917
	52.9°F (11.6°C)	52.4°F (11.3°C)	0.5°F (0.3°C)	51st Warmest	Warmest since: 1926	2015
	Ties: 1924, 1926, 1960, 1963
Aug 1927–May 1928 10-Month	54.9°F (12.7°C)	54.6°F (12.6°C)	0.3°F (0.1°C)	74th Coolest	Coolest since: 1927	1917
	54.9°F (12.7°C)	54.6°F (12.6°C)	0.3°F (0.1°C)	54th Warmest	Warmest since: 1918	2015
	Ties: 1918, 1947, 1961
Jul 1927–May 1928 11-Month	56.7°F (13.7°C)	56.4°F (13.6°C)	0.3°F (0.1°C)	72nd Coolest	Coolest since: 1927	1917
	56.7°F (13.7°C)	56.4°F (13.6°C)	0.3°F (0.1°C)	56th Warmest	Warmest since: 1926	2015
	Ties: 1905, 1947, 1963, 2011
Jun 1927–May 1928 12-Month	57.7°F (14.3°C)	57.4°F (14.1°C)	0.3°F (0.2°C)	72nd Coolest	Coolest since: 1927	1917
	57.7°F (14.3°C)	57.4°F (14.1°C)	0.3°F (0.2°C)	56th Warmest	Warmest since: 1927	2015
	Ties: 1927, 1939, 1963, 1995, 2010, 2011
Dec 1926–May 1928 18-Month	54.6°F (12.6°C)	54.6°F (12.6°C)	0.0°F (0.0°C)	57th Coolest	Coolest since: 1925	1917
	54.6°F (12.6°C)	54.6°F (12.6°C)	0.0°F (0.0°C)	70th Warmest	Warmest since: 1927	2015
	Ties: 1925, 1944, 1958, 1962, 2011
Jun 1926–May 1928 24-Month	57.7°F (14.3°C)	57.4°F (14.1°C)	0.3°F (0.2°C)	75th Coolest	Coolest since: 1927	1913, 1917
	57.7°F (14.3°C)	57.4°F (14.1°C)	0.3°F (0.2°C)	52nd Warmest	Warmest since: 1927	2015
	Ties: 1927, 1962, 1969, 2011
Jun 1925–May 1928 36-Month	57.7°F (14.3°C)	57.4°F (14.1°C)	0.3°F (0.2°C)	74th Coolest	Coolest since: 1927	1913, 1917
	57.7°F (14.3°C)	57.4°F (14.1°C)	0.3°F (0.2°C)	52nd Warmest	Warmest to Date	2016
	Ties: 1963, 1978, 1984
Jun 1924–May 1928 48-Month	57.6°F (14.2°C)	57.4°F (14.1°C)	0.2°F (0.1°C)	68th Coolest	Coolest since: 1927	1913
	57.6°F (14.2°C)	57.4°F (14.1°C)	0.2°F (0.1°C)	57th Warmest	Warmest to Date	2016, 2017, 2018
	Ties: 1939, 1971
Jun 1923–May 1928 60-Month	57.5°F (14.2°C)	57.3°F (14.1°C)	0.2°F (0.1°C)	57th Coolest	Coolest since: 1927	1913, 1917
	57.5°F (14.2°C)	57.3°F (14.1°C)	0.2°F (0.1°C)	67th Warmest	Warmest to Date	2018
	Ties: 1930, 1931, 1939, 1954, 1970, 1971, 1972, 1978

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published May 2023, retrieved on May 29, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings