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, January 2015

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2023)		Warmest/Coolest
Since		Record
January 2015
1-Month		48.6°F
(9.2°C)		42.3°F
(5.7°C)		6.3°F
(3.5°C)		125th Coolest
Coolest since:
1937
5th Warmest
Warmest since:
2014
Dec 2014–Jan 2015
2-Month		47.7°F
(8.7°C)		42.7°F
(5.9°C)		5.0°F
(2.8°C)		127th Coolest
Coolest since:
1949
2nd Warmest
Warmest to Date
2018
Nov 2014–Jan 2015
3-Month		49.5°F
(9.7°C)		45.0°F
(7.2°C)		4.5°F
(2.5°C)		127th Coolest
Coolest since:
1949
2nd Warmest
Warmest to Date
2018
Oct 2014–Jan 2015
4-Month		53.2°F
(11.8°C)		48.6°F
(9.2°C)		4.6°F
(2.6°C)		128th Coolest
Coolest since:
1917
1st Warmest
Warmest to Date
2015
Sep 2014–Jan 2015
5-Month		57.0°F
(13.9°C)		52.6°F
(11.4°C)		4.4°F
(2.5°C)		128th Coolest
Coolest since:
1917
1st Warmest
Warmest to Date
2015
Aug 2014–Jan 2015
6-Month		60.0°F
(15.6°C)		56.1°F
(13.4°C)		3.9°F
(2.2°C)		127th Coolest
Coolest since:
1917
2nd Warmest
Warmest to Date
2021
Jul 2014–Jan 2015
7-Month		62.6°F
(17.0°C)		58.8°F
(14.9°C)		3.8°F
(2.1°C)		128th Coolest
Coolest since:
1917
1st Warmest
Warmest to Date
2015, 2018
Ties: 2018
Jun 2014–Jan 2015
8-Month		63.8°F
(17.7°C)		60.0°F
(15.6°C)		3.8°F
(2.1°C)		127th Coolest
Coolest since:
1917
2nd Warmest
Warmest to Date
2018
May 2014–Jan 2015
9-Month		63.9°F
(17.7°C)		60.0°F
(15.6°C)		3.9°F
(2.1°C)		128th Coolest
Coolest since:
1917
1st Warmest
Warmest to Date
2015
Apr 2014–Jan 2015
10-Month		63.3°F
(17.4°C)		59.4°F
(15.2°C)		3.9°F
(2.2°C)		128th Coolest
Coolest since:
1917
1st Warmest
Warmest to Date
2015
Mar 2014–Jan 2015
11-Month		62.4°F
(16.9°C)		58.5°F
(14.7°C)		3.9°F
(2.2°C)		128th Coolest
Coolest since:
1949
1st Warmest
Warmest to Date
2015
Feb 2014–Jan 2015
12-Month		61.3°F
(16.3°C)		57.4°F
(14.1°C)		3.9°F
(2.2°C)		128th Coolest
Coolest since:
1949
1st Warmest
Warmest to Date
2015
Aug 2013–Jan 2015
18-Month		60.2°F
(15.7°C)		56.9°F
(13.8°C)		3.3°F
(1.9°C)		125th Coolest
Coolest since:
1913
3rd Warmest
Warmest to Date
2016, 2022
Feb 2013–Jan 2015
24-Month		60.7°F
(15.9°C)		57.4°F
(14.1°C)		3.3°F
(1.8°C)		126th Coolest
Coolest since:
1913
2nd Warmest
Warmest to Date
2016
Feb 2012–Jan 2015
36-Month		60.2°F
(15.7°C)		57.4°F
(14.1°C)		2.8°F
(1.6°C)		123rd Coolest
Coolest since:
1914
4th Warmest
Warmest to Date
2016, 2017
Ties: 2019, 2023
Feb 2011–Jan 2015
48-Month		59.5°F
(15.3°C)		57.4°F
(14.1°C)		2.1°F
(1.2°C)		117th Coolest
Coolest since:
1913
9th Warmest
Warmest to Date
2018
Feb 2010–Jan 2015
60-Month		59.1°F
(15.1°C)		57.3°F
(14.1°C)		1.8°F
(1.0°C)		116th Coolest
Coolest since:
1913
9th Warmest
Warmest to Date
2018, 2019

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