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.

Ohio River Basin

Average Temperature Rankings, December 1939

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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
December 1939
1-Month
34.9°F
(1.6°C)
32.4°F
(0.2°C)
2.5°F
(1.4°C)
88th Coolest
Coolest since:
1989
41st Warmest
Warmest since:
2015
Ties: 1972
Nov–Dec 1939
2-Month
37.3°F
(2.9°C)
37.4°F
(3.0°C)
-0.1°F
(-0.1°C)
52nd Coolest
Coolest since:
1976
77th Warmest
Warmest since:
2015
Ties: 1959, 1961, 1977
Oct–Dec 1939
3-Month
43.6°F
(6.4°C)
43.0°F
(6.1°C)
0.6°F
(0.3°C)
73rd Coolest
Coolest since:
1917
56th Warmest
Warmest since:
2015
Ties: 1986
Sep–Dec 1939
4-Month
50.2°F
(10.1°C)
48.7°F
(9.3°C)
1.5°F
(0.8°C)
100th Coolest
Coolest since:
1976
29th Warmest
Warmest since:
1931
Aug–Dec 1939
5-Month
54.7°F
(12.6°C)
53.4°F
(11.9°C)
1.3°F
(0.7°C)
101st Coolest
Coolest since:
1976
28th Warmest
Warmest since:
1931
Ties: 1906, 1922, 1938, 1946, 1982
Jul–Dec 1939
6-Month
57.8°F
(14.3°C)
56.8°F
(13.8°C)
1.0°F
(0.5°C)
95th Coolest
Coolest since:
1976
34th Warmest
Warmest since:
1931
Ties: 1922, 1933, 1946, 1947, 1949
Jun–Dec 1939
7-Month
59.9°F
(15.5°C)
58.7°F
(14.8°C)
1.2°F
(0.7°C)
102nd Coolest
Coolest since:
1976
27th Warmest
Warmest since:
1931
Ties: 1949, 1991, 2012
May–Dec 1939
8-Month
60.4°F
(15.8°C)
59.0°F
(15.0°C)
1.4°F
(0.8°C)
106th Coolest
Coolest since:
1917
23rd Warmest
Warmest since:
1931
Ties: 1899, 1913, 1922, 1971
Apr–Dec 1939
9-Month
59.1°F
(15.1°C)
58.2°F
(14.6°C)
0.9°F
(0.5°C)
89th Coolest
Coolest since:
1917
40th Warmest
Warmest since:
2015
Ties: 1908, 1938, 1994, 2020, 2022
Mar–Dec 1939
10-Month
57.5°F
(14.2°C)
56.5°F
(13.6°C)
1.0°F
(0.6°C)
93rd Coolest
Coolest since:
1917
36th Warmest
Warmest since:
2016
Ties: 1899, 1948, 2002, 2006
Feb–Dec 1939
11-Month
55.4°F
(13.0°C)
54.3°F
(12.4°C)
1.1°F
(0.6°C)
98th Coolest
Coolest since:
1917
31st Warmest
Warmest since:
2012
Ties: 1918, 1933, 1941, 1986, 2005
Jan–Dec 1939
12-Month
53.6°F
(12.0°C)
52.2°F
(11.2°C)
1.4°F
(0.8°C)
104th Coolest
Coolest since:
1917
25th Warmest
Warmest since:
2012
Ties: 1922, 1954, 1987, 2005
Jul 1938–Dec 1939
18-Month
55.1°F
(12.8°C)
53.7°F
(12.1°C)
1.4°F
(0.7°C)
110th Coolest
Coolest since:
1904, 1917
18th Warmest
Warmest since:
2012, 2016
Ties: 1949, 2011
Jan 1938–Dec 1939
24-Month
53.8°F
(12.1°C)
52.2°F
(11.2°C)
1.6°F
(0.9°C)
117th Coolest
Coolest since:
1979
11th Warmest
Warmest since:
2017
Ties: 1932, 1954, 2002, 2006, 2013, 2019
Jan 1937–Dec 1939
36-Month
53.1°F
(11.7°C)
52.2°F
(11.2°C)
0.9°F
(0.5°C)
100th Coolest
Coolest since:
1980
27th Warmest
Warmest since:
2018
Ties: 2011, 2016
Jan 1936–Dec 1939
48-Month
53.0°F
(11.7°C)
52.2°F
(11.2°C)
0.8°F
(0.5°C)
99th Coolest
Coolest since:
1979
27th Warmest
Warmest since:
2019
Ties: 1932, 1935, 1949, 1957, 1992, 1999, 2003, 2015
Jan 1935–Dec 1939
60-Month
52.8°F
(11.6°C)
52.2°F
(11.2°C)
0.6°F
(0.4°C)
90th Coolest
Coolest since:
1980
35th Warmest
Warmest since:
2020
Ties: 1925, 1942, 1949, 1953, 1954, 1990, 1993, 1999

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