Regional Rankings

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Month:

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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 1927

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2023)	Warmest/Coolest Since	Record
May 1927 1-Month	59.9°F (15.5°C)	60.7°F (15.9°C)	-0.8°F (-0.4°C)	39th Coolest	Coolest since: 1921	1977
	59.9°F (15.5°C)	60.7°F (15.9°C)	-0.8°F (-0.4°C)	91st Warmest	Warmest since: 1926	2001
	Ties: 1901, 1935
Apr–May 1927 2-Month	56.5°F (13.6°C)	57.4°F (14.1°C)	-0.9°F (-0.5°C)	43rd Coolest	Coolest since: 1922	1967
	56.5°F (13.6°C)	57.4°F (14.1°C)	-0.9°F (-0.5°C)	87th Warmest	Warmest since: 1926	1992
	Ties: 1900, 1957
Mar–May 1927 3-Month	53.5°F (11.9°C)	54.5°F (12.5°C)	-1.0°F (-0.6°C)	41st Coolest	Coolest since: 1922	1917
	53.5°F (11.9°C)	54.5°F (12.5°C)	-1.0°F (-0.6°C)	89th Warmest	Warmest since: 1926	1934
	Ties: 1965
Feb–May 1927 4-Month	51.6°F (10.9°C)	52.2°F (11.2°C)	-0.6°F (-0.3°C)	44th Coolest	Coolest since: 1923	1917
	51.6°F (10.9°C)	52.2°F (11.2°C)	-0.6°F (-0.3°C)	86th Warmest	Warmest since: 1926	1934
	Ties: 1901, 1915, 1965, 2019
Jan–May 1927 5-Month	50.0°F (10.0°C)	50.2°F (10.1°C)	-0.2°F (-0.1°C)	54th Coolest	Coolest since: 1923	1917
	50.0°F (10.0°C)	50.2°F (10.1°C)	-0.2°F (-0.1°C)	76th Warmest	Warmest since: 1926	2015
	Ties: 1896, 1907, 1946, 1963, 1965
Dec 1926–May 1927 6-Month	48.6°F (9.2°C)	49.1°F (9.5°C)	-0.5°F (-0.3°C)	46th Coolest	Coolest since: 1922	1917
Dec 1926–May 1927 6-Month	48.6°F (9.2°C)	49.1°F (9.5°C)	-0.5°F (-0.3°C)	83rd Warmest	Warmest since: 1926	2015
Nov 1926–May 1927 7-Month	49.3°F (9.6°C)	49.1°F (9.5°C)	0.2°F (0.1°C)	68th Coolest	Coolest since: 1925	1917
	49.3°F (9.6°C)	49.1°F (9.5°C)	0.2°F (0.1°C)	61st Warmest	Warmest since: 1926	2015
	Ties: 1904, 1925, 1939, 1950, 1961
Oct 1926–May 1927 8-Month	50.7°F (10.4°C)	50.4°F (10.2°C)	0.3°F (0.2°C)	69th Coolest	Coolest since: 1925	1917
	50.7°F (10.4°C)	50.4°F (10.2°C)	0.3°F (0.2°C)	60th Warmest	Warmest since: 1926	2015
	Ties: 1904
Sep 1926–May 1927 9-Month	52.3°F (11.3°C)	52.4°F (11.3°C)	-0.1°F (0.0°C)	51st Coolest	Coolest since: 1925	1917
	52.3°F (11.3°C)	52.4°F (11.3°C)	-0.1°F (0.0°C)	78th Warmest	Warmest since: 1926	2015
	Ties: 1935, 1957, 1991
Aug 1926–May 1927 10-Month	54.5°F (12.5°C)	54.6°F (12.6°C)	-0.1°F (-0.1°C)	54th Coolest	Coolest since: 1925	1917
	54.5°F (12.5°C)	54.6°F (12.6°C)	-0.1°F (-0.1°C)	75th Warmest	Warmest since: 1926	2015
	Ties: 1946, 1976, 1985
Jul 1926–May 1927 11-Month	56.4°F (13.6°C)	56.4°F (13.6°C)	0.0°F (0.0°C)	54th Coolest	Coolest since: 1925	1917
	56.4°F (13.6°C)	56.4°F (13.6°C)	0.0°F (0.0°C)	75th Warmest	Warmest since: 1926	2015
	Ties: 1907, 1935, 1965, 1966, 1991, 1999
Jun 1926–May 1927 12-Month	57.7°F (14.3°C)	57.4°F (14.1°C)	0.3°F (0.2°C)	72nd Coolest	Coolest since: 1925	1917
	57.7°F (14.3°C)	57.4°F (14.1°C)	0.3°F (0.2°C)	57th Warmest	Warmest since: 1926	2015
	Ties: 1928, 1939, 1963, 1995, 2010, 2011
Dec 1925–May 1927 18-Month	55.6°F (13.1°C)	54.6°F (12.6°C)	1.0°F (0.5°C)	92nd Coolest	Coolest since: 1926	1917
Dec 1925–May 1927 18-Month	55.6°F (13.1°C)	54.6°F (12.6°C)	1.0°F (0.5°C)	36th Warmest	Warmest to Date	2015
Jun 1925–May 1927 24-Month	57.7°F (14.3°C)	57.4°F (14.1°C)	0.3°F (0.2°C)	75th Coolest	Coolest since: 1926	1913, 1917
	57.7°F (14.3°C)	57.4°F (14.1°C)	0.3°F (0.2°C)	53rd Warmest	Warmest to Date	2015
	Ties: 1928, 1962, 1969, 2011
Jun 1924–May 1927 36-Month	57.5°F (14.2°C)	57.4°F (14.1°C)	0.1°F (0.1°C)	61st Coolest	Coolest since: 1926	1913, 1917
	57.5°F (14.2°C)	57.4°F (14.1°C)	0.1°F (0.1°C)	66th Warmest	Warmest to Date	2016
	Ties: 1939, 1943, 1969, 1985
Jun 1923–May 1927 48-Month	57.4°F (14.1°C)	57.4°F (14.1°C)	0.0°F (0.0°C)	54th Coolest	Coolest since: 1926	1913
	57.4°F (14.1°C)	57.4°F (14.1°C)	0.0°F (0.0°C)	72nd Warmest	Warmest to Date	2016, 2017, 2018
	Ties: 1930, 1953, 1964, 1969
Jun 1922–May 1927 60-Month	57.4°F (14.1°C)	57.3°F (14.1°C)	0.1°F (0.0°C)	52nd Coolest	Coolest since: 1926	1913, 1917
	57.4°F (14.1°C)	57.3°F (14.1°C)	0.1°F (0.0°C)	73rd Warmest	Warmest to Date	2018
	Ties: 1959, 1965, 1969, 1979

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published June 2023, retrieved on June 10, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings