Regional Rankings

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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 1929

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Record Coolest

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
May 1929 1-Month	61.9°F (16.6°C)	60.7°F (15.9°C)	1.2°F (0.7°C)	78th Coolest	Coolest since: 1927	1977
	61.9°F (16.6°C)	60.7°F (15.9°C)	1.2°F (0.7°C)	51st Warmest	Warmest since: 1928	2001
	Ties: 1900, 1981
Apr–May 1929 2-Month	56.0°F (13.3°C)	57.4°F (14.1°C)	-1.4°F (-0.8°C)	34th Coolest	Coolest since: 1922	1967
Apr–May 1929 2-Month	56.0°F (13.3°C)	57.4°F (14.1°C)	-1.4°F (-0.8°C)	95th Warmest	Warmest since: 1928	1992
Mar–May 1929 3-Month	53.4°F (11.9°C)	54.5°F (12.5°C)	-1.1°F (-0.6°C)	36th Coolest	Coolest since: 1922	1917
	53.4°F (11.9°C)	54.5°F (12.5°C)	-1.1°F (-0.6°C)	93rd Warmest	Warmest since: 1928	1934
	Ties: 1907, 1921, 1938, 1995
Feb–May 1929 4-Month	50.5°F (10.3°C)	52.2°F (11.2°C)	-1.7°F (-0.9°C)	16th Coolest	Coolest since: 1922	1917
Feb–May 1929 4-Month	50.5°F (10.3°C)	52.2°F (11.2°C)	-1.7°F (-0.9°C)	113th Warmest	Warmest since: 1928	1934
Jan–May 1929 5-Month	48.4°F (9.1°C)	50.2°F (10.1°C)	-1.8°F (-1.0°C)	10th Coolest	Coolest since: 1922	1917
	48.4°F (9.1°C)	50.2°F (10.1°C)	-1.8°F (-1.0°C)	119th Warmest	Warmest since: 1928	2015
	Ties: 1911, 1948, 1964
Dec 1928–May 1929 6-Month	47.1°F (8.4°C)	49.1°F (9.5°C)	-2.0°F (-1.1°C)	8th Coolest	Coolest since: 1922	1917
	47.1°F (8.4°C)	49.1°F (9.5°C)	-2.0°F (-1.1°C)	120th Warmest	Warmest since: 1928	2015
	Ties: 1913, 1975
Nov 1928–May 1929 7-Month	47.4°F (8.6°C)	49.1°F (9.5°C)	-1.7°F (-0.9°C)	9th Coolest	Coolest since: 1922	1917
	47.4°F (8.6°C)	49.1°F (9.5°C)	-1.7°F (-0.9°C)	119th Warmest	Warmest since: 1928	2015
	Ties: 1932, 1975
Oct 1928–May 1929 8-Month	48.7°F (9.3°C)	50.4°F (10.2°C)	-1.7°F (-0.9°C)	6th Coolest	Coolest since: 1917	1917
	48.7°F (9.3°C)	50.4°F (10.2°C)	-1.7°F (-0.9°C)	122nd Warmest	Warmest since: 1928	2015
	Ties: 1948, 1955
Sep 1928–May 1929 9-Month	51.0°F (10.6°C)	52.4°F (11.3°C)	-1.4°F (-0.7°C)	11th Coolest	Coolest since: 1922	1917
	51.0°F (10.6°C)	52.4°F (11.3°C)	-1.4°F (-0.7°C)	117th Warmest	Warmest since: 1928	2015
	Ties: 1920, 1973
Aug 1928–May 1929 10-Month	53.2°F (11.8°C)	54.6°F (12.6°C)	-1.4°F (-0.8°C)	9th Coolest	Coolest since: 1922	1917
	53.2°F (11.8°C)	54.6°F (12.6°C)	-1.4°F (-0.8°C)	119th Warmest	Warmest since: 1928	2015
	Ties: 1921, 1942, 1948
Jul 1928–May 1929 11-Month	55.1°F (12.8°C)	56.4°F (13.6°C)	-1.3°F (-0.8°C)	10th Coolest	Coolest since: 1922	1917
	55.1°F (12.8°C)	56.4°F (13.6°C)	-1.3°F (-0.8°C)	118th Warmest	Warmest since: 1928	2015
	Ties: 1922
Jun 1928–May 1929 12-Month	56.2°F (13.4°C)	57.4°F (14.1°C)	-1.2°F (-0.7°C)	11th Coolest	Coolest since: 1921	1917
	56.2°F (13.4°C)	57.4°F (14.1°C)	-1.2°F (-0.7°C)	117th Warmest	Warmest since: 1928	2015
	Ties: 1908
Dec 1927–May 1929 18-Month	54.2°F (12.3°C)	54.6°F (12.6°C)	-0.4°F (-0.3°C)	31st Coolest	Coolest since: 1923	1917
	54.2°F (12.3°C)	54.6°F (12.6°C)	-0.4°F (-0.3°C)	96th Warmest	Warmest since: 1928	2015
	Ties: 1902, 1919, 1942, 1973, 1974
Jun 1927–May 1929 24-Month	56.9°F (13.8°C)	57.4°F (14.1°C)	-0.5°F (-0.3°C)	27th Coolest	Coolest since: 1923	1913, 1917
	56.9°F (13.8°C)	57.4°F (14.1°C)	-0.5°F (-0.3°C)	100th Warmest	Warmest since: 1928	2015
	Ties: 1897, 1907, 1946, 1953, 1955, 1973, 1974
Jun 1926–May 1929 36-Month	57.2°F (14.0°C)	57.4°F (14.1°C)	-0.2°F (-0.1°C)	46th Coolest	Coolest since: 1925	1913, 1917
	57.2°F (14.0°C)	57.4°F (14.1°C)	-0.2°F (-0.1°C)	80th Warmest	Warmest since: 1928	2016
	Ties: 1906, 1907, 1947, 1958, 1967
Jun 1925–May 1929 48-Month	57.3°F (14.1°C)	57.4°F (14.1°C)	-0.1°F (0.0°C)	49th Coolest	Coolest since: 1926	1913
	57.3°F (14.1°C)	57.4°F (14.1°C)	-0.1°F (0.0°C)	76th Warmest	Warmest since: 1928	2016, 2017, 2018
	Ties: 1926, 1932, 1944, 1972
Jun 1924–May 1929 60-Month	57.3°F (14.1°C)	57.3°F (14.1°C)	0.0°F (0.0°C)	48th Coolest	Coolest since: 1926	1913, 1917
	57.3°F (14.1°C)	57.3°F (14.1°C)	0.0°F (0.0°C)	76th Warmest	Warmest since: 1928	2018
	Ties: 1932, 1947, 1968

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published March 2023, retrieved on March 23, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings