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, July 1939

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
July 1939 1-Month	75.5°F (24.2°C)	74.7°F (23.7°C)	0.8°F (0.5°C)	79th Coolest	Coolest since: 1938	1987
	75.5°F (24.2°C)	74.7°F (23.7°C)	0.8°F (0.5°C)	50th Warmest	Warmest since: 1937	2021
	Ties: 1981, 1991, 2019
Jun–Jul 1939 2-Month	72.0°F (22.2°C)	71.5°F (21.9°C)	0.5°F (0.3°C)	72nd Coolest	Coolest since: 1935	1944
	72.0°F (22.2°C)	71.5°F (21.9°C)	0.5°F (0.3°C)	57th Warmest	Warmest since: 1938	2021
	Ties: 2012
May–Jul 1939 3-Month	68.7°F (20.4°C)	67.9°F (19.9°C)	0.8°F (0.5°C)	82nd Coolest	Coolest since: 1938	1953, 1998
	68.7°F (20.4°C)	67.9°F (19.9°C)	0.8°F (0.5°C)	47th Warmest	Warmest since: 1937	2021
	Ties: 1900, 1958, 1988, 1990
Apr–Jul 1939 4-Month	66.1°F (18.9°C)	64.4°F (18.0°C)	1.7°F (0.9°C)	98th Coolest	Coolest since: 1938	1944
	66.1°F (18.9°C)	64.4°F (18.0°C)	1.7°F (0.9°C)	31st Warmest	Warmest since: 1936	2021
	Ties: 1973, 1990, 1994
Mar–Jul 1939 5-Month	62.7°F (17.1°C)	61.3°F (16.3°C)	1.4°F (0.8°C)	92nd Coolest	Coolest since: 1938	1912
	62.7°F (17.1°C)	61.3°F (16.3°C)	1.4°F (0.8°C)	37th Warmest	Warmest since: 1936	2013, 2014
	Ties: 1987, 2003
Feb–Jul 1939 6-Month	59.0°F (15.0°C)	58.7°F (14.8°C)	0.3°F (0.2°C)	70th Coolest	Coolest since: 1938	1948
	59.0°F (15.0°C)	58.7°F (14.8°C)	0.3°F (0.2°C)	59th Warmest	Warmest since: 1936	2015
	Ties: 1943
Jan–Jul 1939 7-Month	56.7°F (13.7°C)	56.3°F (13.5°C)	0.4°F (0.2°C)	75th Coolest	Coolest since: 1938	1955
	56.7°F (13.7°C)	56.3°F (13.5°C)	0.4°F (0.2°C)	54th Warmest	Warmest since: 1936	2014
	Ties: 1896, 1943
Dec 1938–Jul 1939 8-Month	55.3°F (12.9°C)	54.7°F (12.6°C)	0.6°F (0.3°C)	79th Coolest	Coolest since: 1938	1917
	55.3°F (12.9°C)	54.7°F (12.6°C)	0.6°F (0.3°C)	49th Warmest	Warmest since: 1936	2015
	Ties: 1951, 1972, 2008
Nov 1938–Jul 1939 9-Month	54.3°F (12.4°C)	54.1°F (12.3°C)	0.2°F (0.1°C)	66th Coolest	Coolest since: 1937	1917
	54.3°F (12.4°C)	54.1°F (12.3°C)	0.2°F (0.1°C)	62nd Warmest	Warmest since: 1938	2015
	Ties: 1927, 1957
Oct 1938–Jul 1939 10-Month	54.7°F (12.6°C)	54.6°F (12.6°C)	0.1°F (0.0°C)	66th Coolest	Coolest since: 1937	1917
	54.7°F (12.6°C)	54.6°F (12.6°C)	0.1°F (0.0°C)	62nd Warmest	Warmest since: 1938	2015
	Ties: 1947, 1985
Sep 1938–Jul 1939 11-Month	56.1°F (13.4°C)	55.9°F (13.3°C)	0.2°F (0.1°C)	67th Coolest	Coolest since: 1937	1917
Sep 1938–Jul 1939 11-Month	56.1°F (13.4°C)	55.9°F (13.3°C)	0.2°F (0.1°C)	61st Warmest	Warmest since: 1938	2015
Aug 1938–Jul 1939 12-Month	57.6°F (14.2°C)	57.4°F (14.1°C)	0.2°F (0.1°C)	70th Coolest	Coolest since: 1937	1917
	57.6°F (14.2°C)	57.4°F (14.1°C)	0.2°F (0.1°C)	58th Warmest	Warmest since: 1938	2015
	Ties: 1900, 1928
Feb 1938–Jul 1939 18-Month	57.8°F (14.3°C)	57.8°F (14.3°C)	0.0°F (0.0°C)	59th Coolest	Coolest since: 1937	1913, 1949
	57.8°F (14.3°C)	57.8°F (14.3°C)	0.0°F (0.0°C)	69th Warmest	Warmest since: 1938	2015
	Ties: 1928, 1937, 1954, 1969
Aug 1937–Jul 1939 24-Month	57.8°F (14.3°C)	57.4°F (14.1°C)	0.4°F (0.2°C)	79th Coolest	Coolest since: 1938	1913
	57.8°F (14.3°C)	57.4°F (14.1°C)	0.4°F (0.2°C)	48th Warmest	Warmest since: 1936	2015
	Ties: 1936, 1951, 1979, 1984
Aug 1936–Jul 1939 36-Month	57.4°F (14.1°C)	57.4°F (14.1°C)	0.0°F (0.0°C)	58th Coolest	Coolest since: 1937	1913
	57.4°F (14.1°C)	57.4°F (14.1°C)	0.0°F (0.0°C)	68th Warmest	Warmest since: 1938	2015, 2016
	Ties: 1934, 1937, 1963
Aug 1935–Jul 1939 48-Month	57.6°F (14.2°C)	57.4°F (14.1°C)	0.2°F (0.1°C)	69th Coolest	Coolest since: 1938	1913
	57.6°F (14.2°C)	57.4°F (14.1°C)	0.2°F (0.1°C)	56th Warmest	Warmest since: 1938	2016, 2018
	Ties: 1927, 1931, 1938, 1963, 1968, 1971, 1979
Aug 1934–Jul 1939 60-Month	57.6°F (14.2°C)	57.3°F (14.1°C)	0.3°F (0.1°C)	70th Coolest	Coolest since: 1936	1913
	57.6°F (14.2°C)	57.3°F (14.1°C)	0.3°F (0.1°C)	54th Warmest	Warmest since: 1938	2017, 2018
	Ties: 1928, 1935, 1936, 1972, 1980, 1983

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