Statewide Rankings

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Please note, Degree Days and Palmer Indices are not available for Alaska. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Idaho

Average Temperature Rankings, September 1931

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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
September 1931 1-Month	54.6°F (12.6°C)	54.7°F (12.6°C)	-0.1°F (0.0°C)	48th Coolest	Coolest since: 1929	1912, 1965
	54.6°F (12.6°C)	54.7°F (12.6°C)	-0.1°F (0.0°C)	81st Warmest	Warmest since: 1930	1990
	Ties: 1925, 1954, 1958, 1993, 2016
Aug–Sep 1931 2-Month	60.0°F (15.6°C)	59.2°F (15.1°C)	0.8°F (0.5°C)	79th Coolest	Coolest since: 1929	1912
Aug–Sep 1931 2-Month	60.0°F (15.6°C)	59.2°F (15.1°C)	0.8°F (0.5°C)	50th Warmest	Warmest since: 1930	2022
Jul–Sep 1931 3-Month	62.6°F (17.0°C)	61.1°F (16.2°C)	1.5°F (0.8°C)	104th Coolest	Coolest since: 1930	1912
	62.6°F (17.0°C)	61.1°F (16.2°C)	1.5°F (0.8°C)	25th Warmest	Warmest since: 1922	2022
	Ties: 1937
Jun–Sep 1931 4-Month	61.9°F (16.6°C)	60.0°F (15.6°C)	1.9°F (1.0°C)	111th Coolest	Coolest since: 1930	1993
	61.9°F (16.6°C)	60.0°F (15.6°C)	1.9°F (1.0°C)	18th Warmest	Warmest since: 1922	2021
	Ties: 1936, 1988, 2014
May–Sep 1931 5-Month	59.8°F (15.4°C)	57.9°F (14.4°C)	1.9°F (1.0°C)	113th Coolest	Coolest since: 1930	1912
	59.8°F (15.4°C)	57.9°F (14.4°C)	1.9°F (1.0°C)	16th Warmest	Warmest to Date	2021
	Ties: 1998, 2014
Apr–Sep 1931 6-Month	56.7°F (13.7°C)	55.1°F (12.8°C)	1.6°F (0.9°C)	107th Coolest	Coolest since: 1930	1912
	56.7°F (13.7°C)	55.1°F (12.8°C)	1.6°F (0.9°C)	22nd Warmest	Warmest to Date	2021
	Ties: 1949, 1998, 2022
Mar–Sep 1931 7-Month	53.2°F (11.8°C)	51.8°F (11.0°C)	1.4°F (0.8°C)	101st Coolest	Coolest since: 1930	1912
	53.2°F (11.8°C)	51.8°F (11.0°C)	1.4°F (0.8°C)	28th Warmest	Warmest since: 1926	1934, 2015
	Ties: 1926, 1961
Feb–Sep 1931 8-Month	49.8°F (9.9°C)	48.7°F (9.3°C)	1.1°F (0.6°C)	96th Coolest	Coolest since: 1929	1964
	49.8°F (9.9°C)	48.7°F (9.3°C)	1.1°F (0.6°C)	33rd Warmest	Warmest since: 1930	1934, 2015
	Ties: 1981, 1991
Jan–Sep 1931 9-Month	46.7°F (8.2°C)	45.7°F (7.6°C)	1.0°F (0.6°C)	92nd Coolest	Coolest since: 1930	1917
	46.7°F (8.2°C)	45.7°F (7.6°C)	1.0°F (0.6°C)	37th Warmest	Warmest since: 1926	1934
	Ties: 1919
Dec 1930–Sep 1931 10-Month	43.7°F (6.5°C)	43.5°F (6.4°C)	0.2°F (0.1°C)	62nd Coolest	Coolest since: 1929	1917
	43.7°F (6.5°C)	43.5°F (6.4°C)	0.2°F (0.1°C)	66th Warmest	Warmest since: 1930	1934
	Ties: 1901
Nov 1930–Sep 1931 11-Month	42.2°F (5.7°C)	42.5°F (5.8°C)	-0.3°F (-0.1°C)	43rd Coolest	Coolest since: 1929	1917
	42.2°F (5.7°C)	42.5°F (5.8°C)	-0.3°F (-0.1°C)	85th Warmest	Warmest since: 1930	1934
	Ties: 1902, 1907, 1971
Oct 1930–Sep 1931 12-Month	42.1°F (5.6°C)	42.6°F (5.9°C)	-0.5°F (-0.3°C)	35th Coolest	Coolest since: 1929	1917
	42.1°F (5.6°C)	42.6°F (5.9°C)	-0.5°F (-0.3°C)	93rd Warmest	Warmest since: 1930	1934
	Ties: 1911
Apr 1930–Sep 1931 18-Month	46.8°F (8.2°C)	46.7°F (8.2°C)	0.1°F (0.0°C)	59th Coolest	Coolest since: 1930	1917
	46.8°F (8.2°C)	46.7°F (8.2°C)	0.1°F (0.0°C)	69th Warmest	Warmest since: 1927	2015
	Ties: 1907, 1911, 1915, 1968
Oct 1929–Sep 1931 24-Month	42.6°F (5.9°C)	42.6°F (5.9°C)	0.0°F (0.0°C)	53rd Coolest	Coolest since: 1930	1917
	42.6°F (5.9°C)	42.6°F (5.9°C)	0.0°F (0.0°C)	74th Warmest	Warmest since: 1928	2016
	Ties: 1897, 1902, 1909, 1928, 1942, 1948, 1962
Oct 1928–Sep 1931 36-Month	41.8°F (5.4°C)	42.6°F (5.9°C)	-0.8°F (-0.5°C)	13th Coolest	Coolest since: 1929	1917
	41.8°F (5.4°C)	42.6°F (5.9°C)	-0.8°F (-0.5°C)	113th Warmest	Warmest since: 1930	2017
	Ties: 1929, 1952
Oct 1927–Sep 1931 48-Month	42.0°F (5.6°C)	42.6°F (5.9°C)	-0.6°F (-0.3°C)	17th Coolest	Coolest since: 1923	1913, 1917, 1932
	42.0°F (5.6°C)	42.6°F (5.9°C)	-0.6°F (-0.3°C)	108th Warmest	Warmest since: 1930	2018
	Ties: 1916, 1919, 1922
Oct 1926–Sep 1931 60-Month	42.1°F (5.6°C)	42.6°F (5.9°C)	-0.5°F (-0.3°C)	16th Coolest	Coolest since: 1924	1917, 1933
	42.1°F (5.6°C)	42.6°F (5.9°C)	-0.5°F (-0.3°C)	108th Warmest	Warmest since: 1930	2016, 2017, 2018
	Ties: 1903, 1918, 1950, 1951, 1975, 1976

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published March 2023, retrieved on March 27, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings