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 1909

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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
December 1909
1-Month
25.5°F
(-3.6°C)
32.4°F
(0.2°C)
-6.9°F
(-3.8°C)
8th Coolest
Coolest since:
1989
121st Warmest
Warmest since:
2015
Ties: 1935
Nov–Dec 1909
2-Month
37.5°F
(3.1°C)
37.4°F
(3.0°C)
0.1°F
(0.1°C)
58th Coolest
Coolest since:
1976
71st Warmest
Warmest since:
2015
Ties: 1972, 1993
Oct–Dec 1909
3-Month
41.6°F
(5.3°C)
43.0°F
(6.1°C)
-1.4°F
(-0.8°C)
30th Coolest
Coolest since:
1917
99th Warmest
Warmest since:
2015
Ties: 1981, 1983
Sep–Dec 1909
4-Month
47.2°F
(8.4°C)
48.7°F
(9.3°C)
-1.5°F
(-0.9°C)
19th Coolest
Coolest since:
1976
110th Warmest
Warmest since:
1931
Ties: 1944, 1966
Aug–Dec 1909
5-Month
52.3°F
(11.3°C)
53.4°F
(11.9°C)
-1.1°F
(-0.6°C)
25th Coolest
Coolest since:
1976
104th Warmest
Warmest since:
1931
Ties: 1924
Jul–Dec 1909
6-Month
55.5°F
(13.1°C)
56.8°F
(13.8°C)
-1.3°F
(-0.7°C)
15th Coolest
Coolest since:
1976
114th Warmest
Warmest since:
1931
Ties: 1904, 1929, 1943, 1958
Jun–Dec 1909
7-Month
57.7°F
(14.3°C)
58.7°F
(14.8°C)
-1.0°F
(-0.5°C)
22nd Coolest
Coolest since:
1976
107th Warmest
Warmest since:
1931
Ties: 1951, 1981
May–Dec 1909
8-Month
58.0°F
(14.4°C)
59.0°F
(15.0°C)
-1.0°F
(-0.6°C)
22nd Coolest
Coolest since:
1917
107th Warmest
Warmest since:
1931
Ties: 1904, 1925, 1937
Apr–Dec 1909
9-Month
57.2°F
(14.0°C)
58.2°F
(14.6°C)
-1.0°F
(-0.6°C)
18th Coolest
Coolest since:
1917
111th Warmest
Warmest since:
2015
Ties: 1926, 1937, 1945, 1974, 2000
Mar–Dec 1909
10-Month
55.4°F
(13.0°C)
56.5°F
(13.6°C)
-1.1°F
(-0.6°C)
15th Coolest
Coolest since:
1917
114th Warmest
Warmest since:
2016
Ties: 1966, 1992, 1996
Feb–Dec 1909
11-Month
53.8°F
(12.1°C)
54.3°F
(12.4°C)
-0.5°F
(-0.3°C)
40th Coolest
Coolest since:
1917
89th Warmest
Warmest since:
2012
Ties: 1940, 1974, 1992
Jan–Dec 1909
12-Month
52.1°F
(11.2°C)
52.2°F
(11.2°C)
-0.1°F
(0.0°C)
52nd Coolest
Coolest since:
1917
77th Warmest
Warmest since:
2012
Ties: 1918, 1935, 1984, 2003, 2008
Jul 1908–Dec 1909
18-Month
53.9°F
(12.2°C)
53.7°F
(12.1°C)
0.2°F
(0.1°C)
60th Coolest
Coolest since:
1904, 1917
68th Warmest
Warmest since:
2012, 2016
Ties: 1896, 1906, 1908, 1985
Jan 1908–Dec 1909
24-Month
52.5°F
(11.4°C)
52.2°F
(11.2°C)
0.3°F
(0.2°C)
74th Coolest
Coolest since:
1979
54th Warmest
Warmest since:
2017
Ties: 1899, 1911, 1935, 1952, 1975
Jan 1907–Dec 1909
36-Month
52.1°F
(11.2°C)
52.2°F
(11.2°C)
-0.1°F
(0.0°C)
44th Coolest
Coolest since:
1980
83rd Warmest
Warmest since:
2018
Ties: 1902, 1910, 1920, 1927, 1937, 1952, 1984, 1985, 1994, 1995, 2015
Jan 1906–Dec 1909
48-Month
52.2°F
(11.2°C)
52.2°F
(11.2°C)
0.0°F
(0.0°C)
49th Coolest
Coolest since:
1979
77th Warmest
Warmest since:
2019
Ties: 1898, 1913, 1973, 1976
Jan 1905–Dec 1909
60-Month
52.0°F
(11.1°C)
52.2°F
(11.2°C)
-0.2°F
(-0.1°C)
39th Coolest
Coolest since:
1980
86th Warmest
Warmest since:
2020
Ties: 1903, 1910, 1973, 1976

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