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 1933

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PeriodValue1901-2000
Mean
AnomalyRank
(1895-2022)
Warmest/Coolest
Since
Record
September 1933
1-Month
66.7°F
(19.3°C)
68.5°F
(20.3°C)
-1.8°F
(-1.0°C)
23rd Coolest
Coolest since:
1986
106th Warmest
Warmest since:
2020
Ties: 1978
Aug–Sep 1933
2-Month
70.9°F
(21.6°C)
71.1°F
(21.7°C)
-0.2°F
(-0.1°C)
48th Coolest
Coolest since:
1900
81st Warmest
Warmest since:
2020
Ties: 1942, 1949
Jul–Sep 1933
3-Month
73.0°F
(22.8°C)
72.3°F
(22.4°C)
0.7°F
(0.4°C)
78th Coolest
Coolest since:
1900
51st Warmest
Warmest since:
2022
Ties: 1906, 1953, 1959
Jun–Sep 1933
4-Month
71.5°F
(21.9°C)
71.3°F
(21.8°C)
0.2°F
(0.1°C)
61st Coolest
Coolest since:
1907
68th Warmest
Warmest since:
2021
Ties: 1896, 1934, 1987
May–Sep 1933
5-Month
68.3°F
(20.2°C)
69.2°F
(20.7°C)
-0.9°F
(-0.5°C)
25th Coolest
Coolest since:
1907
104th Warmest
Warmest since:
2021
Ties: 1914, 1921
Apr–Sep 1933
6-Month
65.7°F
(18.7°C)
66.7°F
(19.3°C)
-1.0°F
(-0.6°C)
25th Coolest
Coolest since:
1912
104th Warmest
Warmest since:
2021
Ties: 1895, 1896, 1905, 1909, 1976, 1998
Mar–Sep 1933
7-Month
63.3°F
(17.4°C)
64.1°F
(17.8°C)
-0.8°F
(-0.4°C)
29th Coolest
Coolest since:
1912
100th Warmest
Warmest since:
2021
Ties: 1901
Feb–Sep 1933
8-Month
60.3°F
(15.7°C)
61.8°F
(16.6°C)
-1.5°F
(-0.9°C)
6th Coolest
Coolest since:
1911
123rd Warmest
Warmest since:
2015
Ties: 1917, 1955, 1965, 1975
Jan–Sep 1933
9-Month
57.9°F
(14.4°C)
59.6°F
(15.3°C)
-1.7°F
(-0.9°C)
6th Coolest
Coolest since:
1903, 1911, 1917
123rd Warmest
Warmest since:
2015
Ties: 1949
Dec 1932–Sep 1933
10-Month
55.9°F
(13.3°C)
57.9°F
(14.4°C)
-2.0°F
(-1.1°C)
1st Coolest
Coolest since:
1917, 1933
127th Warmest
Warmest since:
2015
Ties: 1917
Nov 1932–Sep 1933
11-Month
55.7°F
(13.2°C)
57.2°F
(14.0°C)
-1.5°F
(-0.8°C)
6th Coolest
Coolest since:
1917
122nd Warmest
Warmest since:
2015
Ties: 1955
Oct 1932–Sep 1933
12-Month
56.0°F
(13.3°C)
57.4°F
(14.1°C)
-1.4°F
(-0.8°C)
6th Coolest
Coolest since:
1917
122nd Warmest
Warmest since:
2015
Ties: 1913, 1920, 1955
Apr 1932–Sep 1933
18-Month
59.6°F
(15.3°C)
60.5°F
(15.8°C)
-0.9°F
(-0.5°C)
12th Coolest
Coolest since:
1917
116th Warmest
Warmest since:
2015
Ties: 1916, 1948, 1955
Oct 1931–Sep 1933
24-Month
56.2°F
(13.4°C)
57.4°F
(14.1°C)
-1.2°F
(-0.7°C)
5th Coolest
Coolest since:
1913, 1949
122nd Warmest
Warmest since:
2015
Ties: 1921
Oct 1930–Sep 1933
36-Month
57.0°F
(13.9°C)
57.4°F
(14.1°C)
-0.4°F
(-0.2°C)
37th Coolest
Coolest since:
1913
89th Warmest
Warmest since:
2016
Ties: 1902, 1944, 1956, 1966, 1976, 1977
Oct 1929–Sep 1933
48-Month
57.2°F
(14.0°C)
57.4°F
(14.1°C)
-0.2°F
(-0.1°C)
46th Coolest
Coolest since:
1913
79th Warmest
Warmest since:
2017, 2018
Ties: 1926, 1946, 1967, 1973, 1977
Oct 1928–Sep 1933
60-Month
57.0°F
(13.9°C)
57.4°F
(14.1°C)
-0.4°F
(-0.2°C)
34th Coolest
Coolest since:
1913
90th Warmest
Warmest since:
2018
Ties: 1908, 1953, 1965, 1966, 1977

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