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, May 1922

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PeriodValue1901-2000
Mean
AnomalyRank
(1895-2022)
Warmest/Coolest
Since
Record
May 1922
1-Month
61.1°F
(16.2°C)
60.7°F
(15.9°C)
0.4°F
(0.3°C)
59th Coolest
Coolest since:
1977
70th Warmest
Warmest since:
2001
Ties: 1923, 1938, 1978
Apr–May 1922
2-Month
55.7°F
(13.2°C)
57.4°F
(14.1°C)
-1.7°F
(-0.9°C)
25th Coolest
Coolest since:
1967
104th Warmest
Warmest since:
1992
Ties: 1901, 1905, 1908, 1915, 1944, 1977, 1995
Mar–May 1922
3-Month
52.1°F
(11.2°C)
54.5°F
(12.5°C)
-2.4°F
(-1.3°C)
8th Coolest
Coolest since:
1917
121st Warmest
Warmest since:
1934
Ties: 1902, 1953
Feb–May 1922
4-Month
49.4°F
(9.7°C)
52.2°F
(11.2°C)
-2.8°F
(-1.5°C)
5th Coolest
Coolest since:
1917
124th Warmest
Warmest since:
1934
Ties: 1975
Jan–May 1922
5-Month
47.0°F
(8.3°C)
50.2°F
(10.1°C)
-3.2°F
(-1.8°C)
2nd Coolest
Coolest since:
1917
127th Warmest
Warmest since:
2015
Ties: 1933
Dec 1921–May 1922
6-Month
46.7°F
(8.2°C)
49.1°F
(9.5°C)
-2.4°F
(-1.3°C)
6th Coolest
Coolest since:
1917
122nd Warmest
Warmest since:
2015
Nov 1921–May 1922
7-Month
47.2°F
(8.4°C)
49.1°F
(9.5°C)
-1.9°F
(-1.1°C)
6th Coolest
Coolest since:
1917
122nd Warmest
Warmest since:
2015
Ties: 1937, 1955
Oct 1921–May 1922
8-Month
48.9°F
(9.4°C)
50.4°F
(10.2°C)
-1.5°F
(-0.8°C)
11th Coolest
Coolest since:
1917
117th Warmest
Warmest since:
2015
Ties: 1921, 1937
Sep 1921–May 1922
9-Month
50.9°F
(10.5°C)
52.4°F
(11.3°C)
-1.5°F
(-0.8°C)
10th Coolest
Coolest since:
1917
118th Warmest
Warmest since:
2015
Aug 1921–May 1922
10-Month
53.1°F
(11.7°C)
54.6°F
(12.6°C)
-1.5°F
(-0.9°C)
8th Coolest
Coolest since:
1917
120th Warmest
Warmest since:
2015
Jul 1921–May 1922
11-Month
55.1°F
(12.8°C)
56.4°F
(13.6°C)
-1.3°F
(-0.8°C)
10th Coolest
Coolest since:
1917
118th Warmest
Warmest since:
2015
Ties: 1929
Jun 1921–May 1922
12-Month
56.3°F
(13.5°C)
57.4°F
(14.1°C)
-1.1°F
(-0.6°C)
13th Coolest
Coolest since:
1917
115th Warmest
Warmest since:
2015
Ties: 1909, 1920
Dec 1920–May 1922
18-Month
53.6°F
(12.0°C)
54.6°F
(12.6°C)
-1.0°F
(-0.6°C)
10th Coolest
Coolest since:
1917
117th Warmest
Warmest since:
2015
Ties: 1918, 1923, 1945, 1956
Jun 1920–May 1922
24-Month
56.2°F
(13.4°C)
57.4°F
(14.1°C)
-1.2°F
(-0.7°C)
6th Coolest
Coolest since:
1913, 1917
121st Warmest
Warmest since:
2015
Ties: 1921, 1950
Jun 1919–May 1922
36-Month
56.2°F
(13.4°C)
57.4°F
(14.1°C)
-1.2°F
(-0.7°C)
3rd Coolest
Coolest since:
1913, 1917
123rd Warmest
Warmest since:
2016
Ties: 1950
Jun 1918–May 1922
48-Month
56.4°F
(13.6°C)
57.4°F
(14.1°C)
-1.0°F
(-0.5°C)
8th Coolest
Coolest since:
1913
117th Warmest
Warmest since:
2016, 2017, 2018
Ties: 1923
Jun 1917–May 1922
60-Month
56.7°F
(13.7°C)
57.3°F
(14.1°C)
-0.6°F
(-0.4°C)
16th Coolest
Coolest since:
1913, 1917
108th Warmest
Warmest since:
2018
Ties: 1903, 1925, 1950, 1952

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