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 1903

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Warmest/Coolest
Since		Record
September 1903
1-Month		66.9°F
(19.4°C)		68.5°F
(20.3°C)		-1.6°F
(-0.9°C)		27th Coolest
Coolest since:
1986
102nd Warmest
Warmest since:
2020
Ties: 1919, 1964, 2005
Aug–Sep 1903
2-Month		70.0°F
(21.1°C)		71.1°F
(21.7°C)		-1.1°F
(-0.6°C)		21st Coolest
Coolest since:
1900
108th Warmest
Warmest since:
2020
Ties: 1901, 1968
Jul–Sep 1903
3-Month		70.4°F
(21.3°C)		72.3°F
(22.4°C)		-1.9°F
(-1.1°C)		6th Coolest
Coolest since:
1900
123rd Warmest
Warmest since:
2022
Ties: 1916, 1941
Jun–Sep 1903
4-Month		70.1°F
(21.2°C)		71.3°F
(21.8°C)		-1.2°F
(-0.6°C)		12th Coolest
Coolest since:
1907
117th Warmest
Warmest since:
2021
Ties: 1914, 1925, 1927, 1948, 1976, 1982
May–Sep 1903
5-Month		68.2°F
(20.1°C)		69.2°F
(20.7°C)		-1.0°F
(-0.6°C)		23rd Coolest
Coolest since:
1907
106th Warmest
Warmest since:
2021
Ties: 1920
Apr–Sep 1903
6-Month		65.4°F
(18.6°C)		66.7°F
(19.3°C)		-1.3°F
(-0.7°C)		12th Coolest
Coolest since:
1912
117th Warmest
Warmest since:
2021
Ties: 1955, 1963, 1964
Mar–Sep 1903
7-Month		62.7°F
(17.1°C)		64.1°F
(17.8°C)		-1.4°F
(-0.7°C)		7th Coolest
Coolest since:
1912
122nd Warmest
Warmest since:
2021
Ties: 1902, 1920, 1963, 1964, 1975
Feb–Sep 1903
8-Month		59.7°F
(15.4°C)		61.8°F
(16.6°C)		-2.1°F
(-1.2°C)		4th Coolest
Coolest to Date
1911
125th Warmest
Warmest since:
2015
Jan–Sep 1903
9-Month		57.7°F
(14.3°C)		59.6°F
(15.3°C)		-1.9°F
(-1.0°C)		1st Coolest
Coolest to Date
1903, 1911, 1917
128th Warmest
Warmest since:
2015
Ties: 1911, 1917
Dec 1902–Sep 1903
10-Month		56.2°F
(13.4°C)		57.9°F
(14.4°C)		-1.7°F
(-1.0°C)		5th Coolest
Coolest to Date
1917, 1933
123rd Warmest
Warmest since:
2015
Ties: 1955
Nov 1902–Sep 1903
11-Month		55.4°F
(13.0°C)		57.2°F
(14.0°C)		-1.8°F
(-1.0°C)		4th Coolest
Coolest to Date
1917
124th Warmest
Warmest since:
2015
Oct 1902–Sep 1903
12-Month		55.6°F
(13.1°C)		57.4°F
(14.1°C)		-1.8°F
(-1.0°C)		3rd Coolest
Coolest to Date
1917
125th Warmest
Warmest since:
2015
Ties: 1949
Apr 1902–Sep 1903
18-Month		58.9°F
(14.9°C)		60.5°F
(15.8°C)		-1.6°F
(-0.9°C)		5th Coolest
Coolest to Date
1917
123rd Warmest
Warmest since:
2015
Oct 1901–Sep 1903
24-Month		56.3°F
(13.5°C)		57.4°F
(14.1°C)		-1.1°F
(-0.6°C)		7th Coolest
Coolest to Date
1913, 1949
120th Warmest
Warmest since:
2015
Ties: 1918
Oct 1900–Sep 1903
36-Month		56.5°F
(13.6°C)		57.4°F
(14.1°C)		-0.9°F
(-0.5°C)		11th Coolest
Coolest to Date
1913
115th Warmest
Warmest since:
2016
Ties: 1909, 1911, 1919
Oct 1899–Sep 1903
48-Month		56.7°F
(13.7°C)		57.4°F
(14.1°C)		-0.7°F
(-0.4°C)		16th Coolest
Coolest to Date
1913
109th Warmest
Warmest since:
2017, 2018
Ties: 1916, 1921, 1924
Oct 1898–Sep 1903
60-Month		56.6°F
(13.7°C)		57.4°F
(14.1°C)		-0.8°F
(-0.4°C)		12th Coolest
Coolest to Date
1913
112th Warmest
Warmest since:
2018
Ties: 1910, 1924, 1949

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