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, April 1897

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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
April 1897
1-Month
56.0°F
(13.3°C)
54.0°F
(12.2°C)
2.0°F
(1.1°C)
93rd Coolest
Coolest since:
1967
36th Warmest
Warmest to Date
1989
Ties: 2002
Mar–Apr 1897
2-Month
49.6°F
(9.8°C)
51.4°F
(10.8°C)
-1.8°F
(-1.0°C)
27th Coolest
Coolest since:
1967
102nd Warmest
Warmest since:
1934
Ties: 1913, 1938
Feb–Apr 1897
3-Month
47.1°F
(8.4°C)
49.4°F
(9.7°C)
-2.3°F
(-1.3°C)
9th Coolest
Coolest to Date
1922
120th Warmest
Warmest since:
2015
Ties: 1912, 1933, 1944
Jan–Apr 1897
4-Month
45.8°F
(7.7°C)
47.6°F
(8.7°C)
-1.8°F
(-1.0°C)
12th Coolest
Coolest to Date
1922
117th Warmest
Warmest since:
2015
Ties: 1944, 1967
Dec 1896–Apr 1897
5-Month
45.8°F
(7.7°C)
46.7°F
(8.2°C)
-0.9°F
(-0.5°C)
22nd Coolest
Coolest to Date
1917, 1949
106th Warmest
Warmest since:
2015
Ties: 1898, 1971
Nov 1896–Apr 1897
6-Month
46.1°F
(7.8°C)
47.2°F
(8.4°C)
-1.1°F
(-0.6°C)
20th Coolest
Coolest to Date
1917
108th Warmest
Warmest since:
2015
Ties: 1920, 1923
Oct 1896–Apr 1897
7-Month
48.1°F
(8.9°C)
48.9°F
(9.4°C)
-0.8°F
(-0.5°C)
25th Coolest
Coolest to Date
1917
103rd Warmest
Warmest since:
2015
Ties: 1910, 1944, 1962, 1964
Sep 1896–Apr 1897
8-Month
50.4°F
(10.2°C)
51.4°F
(10.8°C)
-1.0°F
(-0.6°C)
20th Coolest
Coolest to Date
1917
108th Warmest
Warmest since:
2015
Ties: 1909, 1969, 1975, 1979
Aug 1896–Apr 1897
9-Month
52.9°F
(11.6°C)
53.9°F
(12.2°C)
-1.0°F
(-0.6°C)
21st Coolest
Coolest to Date
1917
107th Warmest
Warmest since:
2015
Ties: 1898, 1909
Jul 1896–Apr 1897
10-Month
55.2°F
(12.9°C)
56.0°F
(13.3°C)
-0.8°F
(-0.4°C)
25th Coolest
Coolest since:
1917
103rd Warmest
Warmest to Date
2015
Ties: 1932, 1979
Jun 1896–Apr 1897
11-Month
56.6°F
(13.7°C)
57.1°F
(13.9°C)
-0.5°F
(-0.2°C)
35th Coolest
Coolest since:
1917
93rd Warmest
Warmest to Date
2015
Ties: 1911
May 1896–Apr 1897
12-Month
56.8°F
(13.8°C)
57.4°F
(14.1°C)
-0.6°F
(-0.3°C)
29th Coolest
Coolest since:
1917
99th Warmest
Warmest to Date
2015
Ties: 1898, 1901, 1915, 1924, 1937, 1972, 1979
Nov 1895–Apr 1897
18-Month
53.5°F
(11.9°C)
54.0°F
(12.2°C)
-0.5°F
(-0.3°C)
27th Coolest
Coolest to Date
1949
100th Warmest
Warmest to Date
2015
Ties: 1955, 1966, 1975, 1999
May 1895–Apr 1897
24-Month
56.8°F
(13.8°C)
57.4°F
(14.1°C)
-0.6°F
(-0.3°C)
20th Coolest
Coolest to Date
1913
107th Warmest
Warmest to Date
2015
Ties: 1898, 1908, 1911, 1933

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