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 1901

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Record Coolest
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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2023)	Warmest/Coolest Since	Record
May 1901 1-Month	59.9°F (15.5°C)	60.7°F (15.9°C)	-0.8°F (-0.4°C)	39th Coolest	Coolest since: 1899	1977
	59.9°F (15.5°C)	60.7°F (15.9°C)	-0.8°F (-0.4°C)	91st Warmest	Warmest since: 1900	2001
	Ties: 1927, 1935
Apr–May 1901 2-Month	55.7°F (13.2°C)	57.4°F (14.1°C)	-1.7°F (-0.9°C)	25th Coolest	Coolest since: 1899	1967
	55.7°F (13.2°C)	57.4°F (14.1°C)	-1.7°F (-0.9°C)	105th Warmest	Warmest since: 1900	1992
	Ties: 1905, 1908, 1915, 1922, 1944, 1977, 1995
Mar–May 1901 3-Month	53.7°F (12.1°C)	54.5°F (12.5°C)	-0.8°F (-0.4°C)	44th Coolest	Coolest since: 1899	1917
	53.7°F (12.1°C)	54.5°F (12.5°C)	-0.8°F (-0.4°C)	86th Warmest	Warmest since: 1900	1934
	Ties: 1952, 1962
Feb–May 1901 4-Month	51.6°F (10.9°C)	52.2°F (11.2°C)	-0.6°F (-0.3°C)	44th Coolest	Coolest since: 1899	1917
	51.6°F (10.9°C)	52.2°F (11.2°C)	-0.6°F (-0.3°C)	86th Warmest	Warmest since: 1900	1934
	Ties: 1915, 1927, 1965, 2019
Jan–May 1901 5-Month	49.6°F (9.8°C)	50.2°F (10.1°C)	-0.6°F (-0.3°C)	37th Coolest	Coolest since: 1899	1917
	49.6°F (9.8°C)	50.2°F (10.1°C)	-0.6°F (-0.3°C)	93rd Warmest	Warmest since: 1900	2015
	Ties: 1920, 1923, 1938, 1956, 1982
Dec 1900–May 1901 6-Month	48.7°F (9.3°C)	49.1°F (9.5°C)	-0.4°F (-0.2°C)	47th Coolest	Coolest since: 1899	1917
	48.7°F (9.3°C)	49.1°F (9.5°C)	-0.4°F (-0.2°C)	82nd Warmest	Warmest since: 1900	2015
	Ties: 1923
Nov 1900–May 1901 7-Month	49.1°F (9.5°C)	49.1°F (9.5°C)	0.0°F (0.0°C)	58th Coolest	Coolest since: 1899	1917
	49.1°F (9.5°C)	49.1°F (9.5°C)	0.0°F (0.0°C)	71st Warmest	Warmest since: 1900	2015
	Ties: 1918, 1972, 1977
Oct 1900–May 1901 8-Month	50.2°F (10.1°C)	50.4°F (10.2°C)	-0.2°F (-0.1°C)	53rd Coolest	Coolest since: 1899	1917
	50.2°F (10.1°C)	50.4°F (10.2°C)	-0.2°F (-0.1°C)	76th Warmest	Warmest since: 1900	2015
	Ties: 1907, 1953, 1976
Sep 1900–May 1901 9-Month	51.7°F (10.9°C)	52.4°F (11.3°C)	-0.7°F (-0.4°C)	27th Coolest	Coolest since: 1899	1917
	51.7°F (10.9°C)	52.4°F (11.3°C)	-0.7°F (-0.4°C)	102nd Warmest	Warmest since: 1900	2015
	Ties: 1896, 1979, 1983
Aug 1900–May 1901 10-Month	53.5°F (11.9°C)	54.6°F (12.6°C)	-1.1°F (-0.7°C)	17th Coolest	Coolest since: 1898	1917
	53.5°F (11.9°C)	54.6°F (12.6°C)	-1.1°F (-0.7°C)	112th Warmest	Warmest since: 1900	2015
	Ties: 1909, 1937
Jul 1900–May 1901 11-Month	55.4°F (13.0°C)	56.4°F (13.6°C)	-1.0°F (-0.6°C)	15th Coolest	Coolest since: 1898	1917
	55.4°F (13.0°C)	56.4°F (13.6°C)	-1.0°F (-0.6°C)	114th Warmest	Warmest since: 1900	2015
	Ties: 1896, 1919, 1973
Jun 1900–May 1901 12-Month	56.6°F (13.7°C)	57.4°F (14.1°C)	-0.8°F (-0.4°C)	21st Coolest	Coolest since: 1898	1917
	56.6°F (13.7°C)	57.4°F (14.1°C)	-0.8°F (-0.4°C)	108th Warmest	Warmest since: 1900	2015
	Ties: 1911, 1944, 1952, 1973, 1983
Dec 1899–May 1901 18-Month	54.5°F (12.5°C)	54.6°F (12.6°C)	-0.1°F (-0.1°C)	52nd Coolest	Coolest since: 1900	1917
	54.5°F (12.5°C)	54.6°F (12.6°C)	-0.1°F (-0.1°C)	76th Warmest	Warmest to Date	2015
	Ties: 1963, 1966, 1967, 1977
Jun 1899–May 1901 24-Month	57.0°F (13.9°C)	57.4°F (14.1°C)	-0.4°F (-0.2°C)	35th Coolest	Coolest since: 1899	1913, 1917
Jun 1899–May 1901 24-Month	57.0°F (13.9°C)	57.4°F (14.1°C)	-0.4°F (-0.2°C)	93rd Warmest	Warmest since: 1900	2015
Jun 1898–May 1901 36-Month	57.0°F (13.9°C)	57.4°F (14.1°C)	-0.4°F (-0.2°C)	31st Coolest	Coolest since: 1900	1913, 1917
	57.0°F (13.9°C)	57.4°F (14.1°C)	-0.4°F (-0.2°C)	96th Warmest	Warmest to Date	2016
	Ties: 1902, 1944, 1948, 1955, 1956, 1974
Jun 1897–May 1901 48-Month	56.8°F (13.8°C)	57.4°F (14.1°C)	-0.6°F (-0.3°C)	22nd Coolest	Coolest since: 1899	1913
	56.8°F (13.8°C)	57.4°F (14.1°C)	-0.6°F (-0.3°C)	104th Warmest	Warmest since: 1900	2016, 2017, 2018
	Ties: 1921, 1945, 1952
Jun 1896–May 1901 60-Month	56.9°F (13.8°C)	57.3°F (14.1°C)	-0.4°F (-0.3°C)	26th Coolest	Coolest since: 1900	1913, 1917
	56.9°F (13.8°C)	57.3°F (14.1°C)	-0.4°F (-0.3°C)	99th Warmest	Warmest since: 1900	2018
	Ties: 1900, 1906, 1907, 1951, 1953, 1956

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