Regional Rankings

Regional Data Info
Please note, Palmer Indices are not available for NWS Regions. 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, July 2021

View Period (Months):
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  • Record Coolest
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  • Top 1/3
  • Top 1/10
  • Record Warmest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Warmest/Coolest
Since		 Record
July 2021
1-Month 		79.8°F
(26.6°C)		 74.7°F
(23.7°C)		 5.1°F
(2.9°C)		 128th Coolest
Coolest since:
 1987
1st Warmest
Warmest to Date
 2021
Jun–Jul 2021
2-Month 		77.4°F
(25.2°C)		 71.5°F
(21.9°C)		 5.9°F
(3.3°C)		 128th Coolest
Coolest since:
 1944
1st Warmest
Warmest to Date
 2021
May–Jul 2021
3-Month 		73.1°F
(22.8°C)		 67.9°F
(19.9°C)		 5.2°F
(2.9°C)		 128th Coolest
Coolest since:
 1953, 1998
1st Warmest
Warmest to Date
 2021
Apr–Jul 2021
4-Month 		69.4°F
(20.8°C)		 64.5°F
(18.1°C)		 4.9°F
(2.7°C)		 128th Coolest
Coolest since:
 1944
1st Warmest
Warmest to Date
 2021
Mar–Jul 2021
5-Month 		65.1°F
(18.4°C)		 61.3°F
(16.3°C)		 3.8°F
(2.1°C)		 126th Coolest
Coolest since:
 1912
3rd Warmest
Warmest since:
 2013, 2014
Feb–Jul 2021
6-Month 		62.2°F
(16.8°C)		 58.7°F
(14.8°C)		 3.5°F
(2.0°C)		 125th Coolest
Coolest since:
 1948
4th Warmest
Warmest since:
 2015
Jan–Jul 2021
7-Month 		59.8°F
(15.4°C)		 56.3°F
(13.5°C)		 3.5°F
(1.9°C)		 125th Coolest
Coolest since:
 1955
4th Warmest
Warmest since:
 2014
Dec 2020–Jul 2021
8-Month 		58.0°F
(14.4°C)		 54.7°F
(12.6°C)		 3.3°F
(1.8°C)		 125th Coolest
Coolest since:
 1917
3rd Warmest
Warmest since:
 2015
Nov 2020–Jul 2021
9-Month 		57.2°F
(14.0°C)		 54.1°F
(12.3°C)		 3.1°F
(1.7°C)		 123rd Coolest
Coolest since:
 1917
5th Warmest
Warmest since:
 2015
Oct 2020–Jul 2021
10-Month 		58.1°F
(14.5°C)		 54.6°F
(12.6°C)		 3.5°F
(1.9°C)		 126th Coolest
Coolest since:
 1917
2nd Warmest
Warmest since:
 2015
Ties: 2014
Sep 2020–Jul 2021
11-Month 		59.5°F
(15.3°C)		 55.8°F
(13.2°C)		 3.7°F
(2.1°C)		 126th Coolest
Coolest since:
 1917
2nd Warmest
Warmest since:
 2015
Aug 2020–Jul 2021
12-Month 		61.2°F
(16.2°C)		 57.4°F
(14.1°C)		 3.8°F
(2.1°C)		 126th Coolest
Coolest since:
 1917
2nd Warmest
Warmest since:
 2015
Feb 2020–Jul 2021
18-Month 		61.1°F
(16.2°C)		 57.8°F
(14.3°C)		 3.3°F
(1.9°C)		 126th Coolest
Coolest since:
 1913, 1949
2nd Warmest
Warmest since:
 2015
Ties: 2016
Aug 2019–Jul 2021
24-Month 		60.3°F
(15.7°C)		 57.4°F
(14.1°C)		 2.9°F
(1.6°C)		 123rd Coolest
Coolest since:
 1913
4th Warmest
Warmest since:
 2015
Ties: 2014
Aug 2018–Jul 2021
36-Month 		59.8°F
(15.4°C)		 57.4°F
(14.1°C)		 2.4°F
(1.3°C)		 120th Coolest
Coolest since:
 1913
6th Warmest
Warmest since:
 2015, 2016
Ties: 2014
Aug 2017–Jul 2021
48-Month 		59.9°F
(15.5°C)		 57.3°F
(14.1°C)		 2.6°F
(1.4°C)		 120th Coolest
Coolest since:
 1913
5th Warmest
Warmest since:
 2016
Aug 2016–Jul 2021
60-Month 		59.9°F
(15.5°C)		 57.4°F
(14.1°C)		 2.5°F
(1.4°C)		 118th Coolest
Coolest since:
 1913
6th Warmest
Warmest since:
 2017, 2018

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