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 2018

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2023)		Warmest/Coolest
Since		Record
January 2018
1-Month		48.9°F
(9.4°C)		42.3°F
(5.7°C)		6.6°F
(3.7°C)		127th Coolest
Coolest since:
1937
3rd Warmest
Warmest since:
2014
Dec 2017–Jan 2018
2-Month		48.2°F
(9.0°C)		42.7°F
(5.9°C)		5.5°F
(3.1°C)		128th Coolest
Coolest since:
1949
1st Warmest
Warmest to Date
2018
Nov 2017–Jan 2018
3-Month		49.9°F
(9.9°C)		45.0°F
(7.2°C)		4.9°F
(2.7°C)		128th Coolest
Coolest since:
1949
1st Warmest
Warmest to Date
2018
Oct 2017–Jan 2018
4-Month		52.9°F
(11.6°C)		48.6°F
(9.2°C)		4.3°F
(2.4°C)		127th Coolest
Coolest since:
1917
2nd Warmest
Warmest since:
2015
Sep 2017–Jan 2018
5-Month		56.3°F
(13.5°C)		52.6°F
(11.4°C)		3.7°F
(2.1°C)		126th Coolest
Coolest since:
1917
3rd Warmest
Warmest since:
2015
Ties: 1996
Aug 2017–Jan 2018
6-Month		59.9°F
(15.5°C)		56.1°F
(13.4°C)		3.8°F
(2.1°C)		126th Coolest
Coolest since:
1917
3rd Warmest
Warmest since:
2021
Jul 2017–Jan 2018
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 since:
2015, 2018
Ties: 2015
Jun 2017–Jan 2018
8-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
2018
May 2017–Jan 2018
9-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 since:
2015
Apr 2017–Jan 2018
10-Month		63.0°F
(17.2°C)		59.4°F
(15.2°C)		3.6°F
(2.0°C)		127th Coolest
Coolest since:
1917
2nd Warmest
Warmest since:
2015
Ties: 2022
Mar 2017–Jan 2018
11-Month		62.1°F
(16.7°C)		58.5°F
(14.7°C)		3.6°F
(2.0°C)		127th Coolest
Coolest since:
1949
2nd Warmest
Warmest since:
2015
Feb 2017–Jan 2018
12-Month		60.9°F
(16.1°C)		57.4°F
(14.1°C)		3.5°F
(2.0°C)		127th Coolest
Coolest since:
1949
2nd Warmest
Warmest since:
2015
Aug 2016–Jan 2018
18-Month		59.7°F
(15.4°C)		56.9°F
(13.8°C)		2.8°F
(1.6°C)		123rd Coolest
Coolest since:
1913
5th Warmest
Warmest since:
2016, 2022
Feb 2016–Jan 2018
24-Month		60.4°F
(15.8°C)		57.4°F
(14.1°C)		3.0°F
(1.7°C)		124th Coolest
Coolest since:
1913
4th Warmest
Warmest since:
2016
Ties: 2019
Feb 2015–Jan 2018
36-Month		60.4°F
(15.8°C)		57.4°F
(14.1°C)		3.0°F
(1.7°C)		124th Coolest
Coolest since:
1914
3rd Warmest
Warmest since:
2016, 2017
Feb 2014–Jan 2018
48-Month		60.6°F
(15.9°C)		57.4°F
(14.1°C)		3.2°F
(1.8°C)		125th Coolest
Coolest since:
1913
1st Warmest
Warmest to Date
2018
Feb 2013–Jan 2018
60-Month		60.5°F
(15.8°C)		57.3°F
(14.1°C)		3.2°F
(1.7°C)		124th Coolest
Coolest since:
1913
1st Warmest
Warmest to Date
2018, 2019
Ties: 2019

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