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 1909

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
May 1909 1-Month	58.5°F (14.7°C)	60.7°F (15.9°C)	-2.2°F (-1.2°C)	27th Coolest	Coolest since: 1908	1977
	58.5°F (14.7°C)	60.7°F (15.9°C)	-2.2°F (-1.2°C)	102nd Warmest	Warmest since: 1907	2001
	Ties: 1961
Apr–May 1909 2-Month	56.6°F (13.7°C)	57.4°F (14.1°C)	-0.8°F (-0.4°C)	46th Coolest	Coolest since: 1908	1967
	56.6°F (13.7°C)	57.4°F (14.1°C)	-0.8°F (-0.4°C)	83rd Warmest	Warmest since: 1907	1992
	Ties: 1913, 1923, 1932
Mar–May 1909 3-Month	53.0°F (11.7°C)	54.5°F (12.5°C)	-1.5°F (-0.8°C)	24th Coolest	Coolest since: 1906	1917
	53.0°F (11.7°C)	54.5°F (12.5°C)	-1.5°F (-0.8°C)	105th Warmest	Warmest since: 1908	1934
	Ties: 1899, 1903, 1911
Feb–May 1909 4-Month	50.6°F (10.3°C)	52.2°F (11.2°C)	-1.6°F (-0.9°C)	17th Coolest	Coolest since: 1903	1917
	50.6°F (10.3°C)	52.2°F (11.2°C)	-1.6°F (-0.9°C)	112th Warmest	Warmest since: 1908	1934
	Ties: 1902, 1971
Jan–May 1909 5-Month	49.5°F (9.7°C)	50.2°F (10.1°C)	-0.7°F (-0.4°C)	32nd Coolest	Coolest since: 1908	1917
	49.5°F (9.7°C)	50.2°F (10.1°C)	-0.7°F (-0.4°C)	97th Warmest	Warmest since: 1907	2015
	Ties: 1899, 1915, 1919
Dec 1908–May 1909 6-Month	48.1°F (8.9°C)	49.1°F (9.5°C)	-1.0°F (-0.6°C)	29th Coolest	Coolest since: 1903	1917
	48.1°F (8.9°C)	49.1°F (9.5°C)	-1.0°F (-0.6°C)	99th Warmest	Warmest since: 1908	2015
	Ties: 1899, 1969
Nov 1908–May 1909 7-Month	48.3°F (9.1°C)	49.1°F (9.5°C)	-0.8°F (-0.4°C)	29th Coolest	Coolest since: 1903	1917
	48.3°F (9.1°C)	49.1°F (9.5°C)	-0.8°F (-0.4°C)	99th Warmest	Warmest since: 1908	2015
	Ties: 1915, 1944, 1969
Oct 1908–May 1909 8-Month	49.3°F (9.6°C)	50.4°F (10.2°C)	-1.1°F (-0.6°C)	19th Coolest	Coolest since: 1903	1917
Oct 1908–May 1909 8-Month	49.3°F (9.6°C)	50.4°F (10.2°C)	-1.1°F (-0.6°C)	109th Warmest	Warmest since: 1908	2015
Sep 1908–May 1909 9-Month	51.3°F (10.7°C)	52.4°F (11.3°C)	-1.1°F (-0.6°C)	18th Coolest	Coolest since: 1903	1917
	51.3°F (10.7°C)	52.4°F (11.3°C)	-1.1°F (-0.6°C)	110th Warmest	Warmest since: 1908	2015
	Ties: 1962
Aug 1908–May 1909 10-Month	53.5°F (11.9°C)	54.6°F (12.6°C)	-1.1°F (-0.7°C)	17th Coolest	Coolest since: 1903	1917
	53.5°F (11.9°C)	54.6°F (12.6°C)	-1.1°F (-0.7°C)	111th Warmest	Warmest since: 1908	2015
	Ties: 1901, 1937
Jul 1908–May 1909 11-Month	55.6°F (13.1°C)	56.4°F (13.6°C)	-0.8°F (-0.5°C)	22nd Coolest	Coolest since: 1908	1917
	55.6°F (13.1°C)	56.4°F (13.6°C)	-0.8°F (-0.5°C)	106th Warmest	Warmest since: 1907	2015
	Ties: 1937, 1964, 1975
Jun 1908–May 1909 12-Month	56.3°F (13.5°C)	57.4°F (14.1°C)	-1.1°F (-0.6°C)	13th Coolest	Coolest since: 1908	1917
	56.3°F (13.5°C)	57.4°F (14.1°C)	-1.1°F (-0.6°C)	115th Warmest	Warmest since: 1907	2015
	Ties: 1920, 1922
Dec 1907–May 1909 18-Month	53.7°F (12.1°C)	54.6°F (12.6°C)	-0.9°F (-0.5°C)	15th Coolest	Coolest since: 1903	1917
Dec 1907–May 1909 18-Month	53.7°F (12.1°C)	54.6°F (12.6°C)	-0.9°F (-0.5°C)	112th Warmest	Warmest since: 1908	2015
Jun 1907–May 1909 24-Month	56.3°F (13.5°C)	57.4°F (14.1°C)	-1.1°F (-0.6°C)	9th Coolest	Coolest to Date	1913, 1917
Jun 1907–May 1909 24-Month	56.3°F (13.5°C)	57.4°F (14.1°C)	-1.1°F (-0.6°C)	118th Warmest	Warmest since: 1908	2015
Jun 1906–May 1909 36-Month	56.6°F (13.7°C)	57.4°F (14.1°C)	-0.8°F (-0.4°C)	15th Coolest	Coolest since: 1904	1913, 1917
	56.6°F (13.7°C)	57.4°F (14.1°C)	-0.8°F (-0.4°C)	111th Warmest	Warmest since: 1908	2016
	Ties: 1904, 1911
Jun 1905–May 1909 48-Month	56.6°F (13.7°C)	57.4°F (14.1°C)	-0.8°F (-0.4°C)	13th Coolest	Coolest since: 1904	1913
	56.6°F (13.7°C)	57.4°F (14.1°C)	-0.8°F (-0.4°C)	112th Warmest	Warmest since: 1908	2016, 2017, 2018
	Ties: 1904, 1910, 1924, 1949
Jun 1904–May 1909 60-Month	56.8°F (13.8°C)	57.3°F (14.1°C)	-0.5°F (-0.3°C)	21st Coolest	Coolest since: 1905	1913, 1917
	56.8°F (13.8°C)	57.3°F (14.1°C)	-0.5°F (-0.3°C)	103rd Warmest	Warmest since: 1908	2018
	Ties: 1902, 1904, 1905, 1948

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