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 1912

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PeriodValue1901-2000
Mean
AnomalyRank
(1895-2022)
Warmest/Coolest
Since
Record
September 1912
1-Month
65.8°F
(18.8°C)
68.5°F
(20.3°C)
-2.7°F
(-1.5°C)
14th Coolest
Coolest since:
1986
115th Warmest
Warmest since:
2020
Aug–Sep 1912
2-Month
68.3°F
(20.2°C)
71.1°F
(21.7°C)
-2.8°F
(-1.5°C)
6th Coolest
Coolest since:
1900
123rd Warmest
Warmest since:
2020
Jul–Sep 1912
3-Month
69.4°F
(20.8°C)
72.3°F
(22.4°C)
-2.9°F
(-1.6°C)
2nd Coolest
Coolest since:
1900
127th Warmest
Warmest since:
2022
Jun–Sep 1912
4-Month
68.9°F
(20.5°C)
71.3°F
(21.8°C)
-2.4°F
(-1.3°C)
2nd Coolest
Coolest since:
1907
127th Warmest
Warmest since:
2021
May–Sep 1912
5-Month
67.1°F
(19.5°C)
69.2°F
(20.7°C)
-2.1°F
(-1.2°C)
3rd Coolest
Coolest since:
1907
126th Warmest
Warmest since:
2021
Ties: 1916, 1965
Apr–Sep 1912
6-Month
64.1°F
(17.8°C)
66.7°F
(19.3°C)
-2.6°F
(-1.5°C)
1st Coolest
Coolest to Date
1912
128th Warmest
Warmest since:
2021
Mar–Sep 1912
7-Month
61.5°F
(16.4°C)
64.1°F
(17.8°C)
-2.6°F
(-1.4°C)
1st Coolest
Coolest to Date
1912
128th Warmest
Warmest since:
2021
Feb–Sep 1912
8-Month
59.6°F
(15.3°C)
61.8°F
(16.6°C)
-2.2°F
(-1.3°C)
2nd Coolest
Coolest since:
1911
127th Warmest
Warmest since:
2015
Ties: 1948
Jan–Sep 1912
9-Month
57.8°F
(14.3°C)
59.6°F
(15.3°C)
-1.8°F
(-1.0°C)
4th Coolest
Coolest since:
1903, 1911, 1917
125th Warmest
Warmest since:
2015
Ties: 1955
Dec 1911–Sep 1912
10-Month
56.0°F
(13.3°C)
57.9°F
(14.4°C)
-1.9°F
(-1.1°C)
3rd Coolest
Coolest to Date
1917, 1933
125th Warmest
Warmest since:
2015
Ties: 1949
Nov 1911–Sep 1912
11-Month
55.3°F
(12.9°C)
57.2°F
(14.0°C)
-1.9°F
(-1.1°C)
3rd Coolest
Coolest to Date
1917
125th Warmest
Warmest since:
2015
Oct 1911–Sep 1912
12-Month
55.5°F
(13.1°C)
57.4°F
(14.1°C)
-1.9°F
(-1.0°C)
2nd Coolest
Coolest to Date
1917
126th Warmest
Warmest since:
2015
Apr 1911–Sep 1912
18-Month
58.4°F
(14.7°C)
60.5°F
(15.8°C)
-2.1°F
(-1.1°C)
2nd Coolest
Coolest to Date
1917
126th Warmest
Warmest since:
2015
Oct 1910–Sep 1912
24-Month
55.8°F
(13.2°C)
57.4°F
(14.1°C)
-1.6°F
(-0.9°C)
3rd Coolest
Coolest to Date
1913, 1949
124th Warmest
Warmest since:
2015
Ties: 1917
Oct 1909–Sep 1912
36-Month
56.2°F
(13.4°C)
57.4°F
(14.1°C)
-1.2°F
(-0.7°C)
3rd Coolest
Coolest to Date
1913
123rd Warmest
Warmest since:
2016
Ties: 1950
Oct 1908–Sep 1912
48-Month
56.2°F
(13.4°C)
57.4°F
(14.1°C)
-1.2°F
(-0.7°C)
2nd Coolest
Coolest to Date
1913
123rd Warmest
Warmest since:
2017, 2018
Oct 1907–Sep 1912
60-Month
56.3°F
(13.5°C)
57.4°F
(14.1°C)
-1.1°F
(-0.6°C)
2nd Coolest
Coolest to Date
1913
122nd Warmest
Warmest since:
2018
Ties: 1917, 1921

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