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 1930

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
May 1930 1-Month	56.6°F (13.7°C)	60.7°F (15.9°C)	-4.1°F (-2.2°C)	8th Coolest	Coolest since: 1917	1977
May 1930 1-Month	56.6°F (13.7°C)	60.7°F (15.9°C)	-4.1°F (-2.2°C)	121st Warmest	Warmest since: 1929	2001
Apr–May 1930 2-Month	56.4°F (13.6°C)	57.4°F (14.1°C)	-1.0°F (-0.5°C)	41st Coolest	Coolest since: 1929	1967
	56.4°F (13.6°C)	57.4°F (14.1°C)	-1.0°F (-0.5°C)	88th Warmest	Warmest since: 1928	1992
	Ties: 1980
Mar–May 1930 3-Month	54.4°F (12.4°C)	54.5°F (12.5°C)	-0.1°F (-0.1°C)	61st Coolest	Coolest since: 1929	1917
	54.4°F (12.4°C)	54.5°F (12.5°C)	-0.1°F (-0.1°C)	68th Warmest	Warmest since: 1928	1934
	Ties: 1937, 1973, 1974
Feb–May 1930 4-Month	53.0°F (11.7°C)	52.2°F (11.2°C)	0.8°F (0.5°C)	79th Coolest	Coolest since: 1929	1917
	53.0°F (11.7°C)	52.2°F (11.2°C)	0.8°F (0.5°C)	50th Warmest	Warmest since: 1928	1934
	Ties: 1950
Jan–May 1930 5-Month	50.4°F (10.2°C)	50.2°F (10.1°C)	0.2°F (0.1°C)	67th Coolest	Coolest since: 1929	1917
Jan–May 1930 5-Month	50.4°F (10.2°C)	50.2°F (10.1°C)	0.2°F (0.1°C)	62nd Warmest	Warmest since: 1928	2015
Dec 1929–May 1930 6-Month	50.0°F (10.0°C)	49.1°F (9.5°C)	0.9°F (0.5°C)	86th Coolest	Coolest since: 1929	1917
	50.0°F (10.0°C)	49.1°F (9.5°C)	0.9°F (0.5°C)	42nd Warmest	Warmest since: 1928	2015
	Ties: 1970, 2006
Nov 1929–May 1930 7-Month	50.1°F (10.1°C)	49.1°F (9.5°C)	1.0°F (0.6°C)	88th Coolest	Coolest since: 1929	1917
	50.1°F (10.1°C)	49.1°F (9.5°C)	1.0°F (0.6°C)	40th Warmest	Warmest since: 1928	2015
	Ties: 1914, 1941, 2002
Oct 1929–May 1930 8-Month	51.5°F (10.8°C)	50.4°F (10.2°C)	1.1°F (0.6°C)	91st Coolest	Coolest since: 1929	1917
Oct 1929–May 1930 8-Month	51.5°F (10.8°C)	50.4°F (10.2°C)	1.1°F (0.6°C)	37th Warmest	Warmest since: 1926	2015
Sep 1929–May 1930 9-Month	53.2°F (11.8°C)	52.4°F (11.3°C)	0.8°F (0.5°C)	88th Coolest	Coolest since: 1929	1917
	53.2°F (11.8°C)	52.4°F (11.3°C)	0.8°F (0.5°C)	40th Warmest	Warmest since: 1914	2015
	Ties: 1970, 1993, 2001
Aug 1929–May 1930 10-Month	55.5°F (13.1°C)	54.6°F (12.6°C)	0.9°F (0.5°C)	96th Coolest	Coolest since: 1929	1917
	55.5°F (13.1°C)	54.6°F (12.6°C)	0.9°F (0.5°C)	32nd Warmest	Warmest since: 1914	2015
	Ties: 1943, 1954, 1993, 1994, 2006
Jul 1929–May 1930 11-Month	57.2°F (14.0°C)	56.4°F (13.6°C)	0.8°F (0.4°C)	94th Coolest	Coolest since: 1929	1917
	57.2°F (14.0°C)	56.4°F (13.6°C)	0.8°F (0.4°C)	34th Warmest	Warmest since: 1914	2015
	Ties: 1914, 1970, 1993
Jun 1929–May 1930 12-Month	58.1°F (14.5°C)	57.4°F (14.1°C)	0.7°F (0.4°C)	86th Coolest	Coolest since: 1929	1917
	58.1°F (14.5°C)	57.4°F (14.1°C)	0.7°F (0.4°C)	42nd Warmest	Warmest to Date	2015
	Ties: 1938, 1987, 2008
Dec 1928–May 1930 18-Month	54.4°F (12.4°C)	54.6°F (12.6°C)	-0.2°F (-0.2°C)	45th Coolest	Coolest since: 1929	1917
	54.4°F (12.4°C)	54.6°F (12.6°C)	-0.2°F (-0.2°C)	82nd Warmest	Warmest since: 1928	2015
	Ties: 1900, 1906, 1915, 1946, 1952, 1969
Jun 1928–May 1930 24-Month	57.1°F (13.9°C)	57.4°F (14.1°C)	-0.3°F (-0.2°C)	36th Coolest	Coolest since: 1929	1913, 1917
	57.1°F (13.9°C)	57.4°F (14.1°C)	-0.3°F (-0.2°C)	91st Warmest	Warmest since: 1928	2015
	Ties: 1924, 1925, 1942, 1957, 1964, 1967, 1972, 1975, 1976, 1977, 1999
Jun 1927–May 1930 36-Month	57.3°F (14.1°C)	57.4°F (14.1°C)	-0.1°F (0.0°C)	52nd Coolest	Coolest since: 1929	1913, 1917
	57.3°F (14.1°C)	57.4°F (14.1°C)	-0.1°F (0.0°C)	74th Warmest	Warmest since: 1928	2016
	Ties: 1926, 1937, 1954, 1971
Jun 1926–May 1930 48-Month	57.4°F (14.1°C)	57.4°F (14.1°C)	0.0°F (0.0°C)	54th Coolest	Coolest since: 1929	1913
	57.4°F (14.1°C)	57.4°F (14.1°C)	0.0°F (0.0°C)	71st Warmest	Warmest since: 1928	2016, 2017, 2018
	Ties: 1927, 1953, 1964, 1969
Jun 1925–May 1930 60-Month	57.5°F (14.2°C)	57.3°F (14.1°C)	0.2°F (0.1°C)	57th Coolest	Coolest since: 1929	1913, 1917
	57.5°F (14.2°C)	57.3°F (14.1°C)	0.2°F (0.1°C)	67th Warmest	Warmest since: 1928	2018
	Ties: 1928, 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 June 8, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings