Regional Rankings

Regional Data Info
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, September 1933

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Warmest/Coolest
Since		Record
September 1933
1-Month		66.7°F
(19.3°C)		68.5°F
(20.3°C)		-1.8°F
(-1.0°C)		23rd Coolest
Coolest since:
1986
106th Warmest
Warmest since:
2020
Ties: 1978
Aug–Sep 1933
2-Month		70.9°F
(21.6°C)		71.1°F
(21.7°C)		-0.2°F
(-0.1°C)		48th Coolest
Coolest since:
1900
81st Warmest
Warmest since:
2020
Ties: 1942, 1949
Jul–Sep 1933
3-Month		73.0°F
(22.8°C)		72.3°F
(22.4°C)		0.7°F
(0.4°C)		78th Coolest
Coolest since:
1900
51st Warmest
Warmest since:
2022
Ties: 1906, 1953, 1959
Jun–Sep 1933
4-Month		71.5°F
(21.9°C)		71.3°F
(21.8°C)		0.2°F
(0.1°C)		61st Coolest
Coolest since:
1907
68th Warmest
Warmest since:
2021
Ties: 1896, 1934, 1987
May–Sep 1933
5-Month		68.3°F
(20.2°C)		69.2°F
(20.7°C)		-0.9°F
(-0.5°C)		25th Coolest
Coolest since:
1907
104th Warmest
Warmest since:
2021
Ties: 1914, 1921
Apr–Sep 1933
6-Month		65.7°F
(18.7°C)		66.7°F
(19.3°C)		-1.0°F
(-0.6°C)		25th Coolest
Coolest since:
1912
104th Warmest
Warmest since:
2021
Ties: 1895, 1896, 1905, 1909, 1976, 1998
Mar–Sep 1933
7-Month		63.3°F
(17.4°C)		64.1°F
(17.8°C)		-0.8°F
(-0.4°C)		29th Coolest
Coolest since:
1912
100th Warmest
Warmest since:
2021
Ties: 1901
Feb–Sep 1933
8-Month		60.3°F
(15.7°C)		61.8°F
(16.6°C)		-1.5°F
(-0.9°C)		6th Coolest
Coolest since:
1911
123rd Warmest
Warmest since:
2015
Ties: 1917, 1955, 1965, 1975
Jan–Sep 1933
9-Month		57.9°F
(14.4°C)		59.6°F
(15.3°C)		-1.7°F
(-0.9°C)		6th Coolest
Coolest since:
1903, 1911, 1917
123rd Warmest
Warmest since:
2015
Ties: 1949
Dec 1932–Sep 1933
10-Month		55.9°F
(13.3°C)		57.9°F
(14.4°C)		-2.0°F
(-1.1°C)		1st Coolest
Coolest since:
1917, 1933
127th Warmest
Warmest since:
2015
Ties: 1917
Nov 1932–Sep 1933
11-Month		55.7°F
(13.2°C)		57.2°F
(14.0°C)		-1.5°F
(-0.8°C)		6th Coolest
Coolest since:
1917
122nd Warmest
Warmest since:
2015
Ties: 1955
Oct 1932–Sep 1933
12-Month		56.0°F
(13.3°C)		57.4°F
(14.1°C)		-1.4°F
(-0.8°C)		6th Coolest
Coolest since:
1917
122nd Warmest
Warmest since:
2015
Ties: 1913, 1920, 1955
Apr 1932–Sep 1933
18-Month		59.6°F
(15.3°C)		60.5°F
(15.8°C)		-0.9°F
(-0.5°C)		12th Coolest
Coolest since:
1917
116th Warmest
Warmest since:
2015
Ties: 1916, 1948, 1955
Oct 1931–Sep 1933
24-Month		56.2°F
(13.4°C)		57.4°F
(14.1°C)		-1.2°F
(-0.7°C)		5th Coolest
Coolest since:
1913, 1949
122nd Warmest
Warmest since:
2015
Ties: 1921
Oct 1930–Sep 1933
36-Month		57.0°F
(13.9°C)		57.4°F
(14.1°C)		-0.4°F
(-0.2°C)		37th Coolest
Coolest since:
1913
89th Warmest
Warmest since:
2016
Ties: 1902, 1944, 1956, 1966, 1976, 1977
Oct 1929–Sep 1933
48-Month		57.2°F
(14.0°C)		57.4°F
(14.1°C)		-0.2°F
(-0.1°C)		46th Coolest
Coolest since:
1913
79th Warmest
Warmest since:
2017, 2018
Ties: 1926, 1946, 1967, 1973, 1977
Oct 1928–Sep 1933
60-Month		57.0°F
(13.9°C)		57.4°F
(14.1°C)		-0.4°F
(-0.2°C)		34th Coolest
Coolest since:
1913
90th Warmest
Warmest since:
2018
Ties: 1908, 1953, 1965, 1966, 1977

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