Regional Rankings

Regional Data Info
Please note, Palmer Indices are not available for NWS Regions. 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 1930

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  • Record Coolest
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  • Top 1/3
  • Top 1/10
  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Warmest/Coolest
Since
Record
December 1930
1-Month
30.6°F
(-0.8°C)
32.4°F
(0.2°C)
-1.8°F
(-1.0°C)
36th Coolest
Coolest since:
1989
92nd Warmest
Warmest since:
2015
Ties: 1899, 1968
Nov–Dec 1930
2-Month
36.3°F
(2.4°C)
37.3°F
(2.9°C)
-1.0°F
(-0.5°C)
33rd Coolest
Coolest since:
1976
95th Warmest
Warmest since:
2015
Ties: 1929
Oct–Dec 1930
3-Month
41.3°F
(5.2°C)
43.0°F
(6.1°C)
-1.7°F
(-0.9°C)
23rd Coolest
Coolest since:
1917
105th Warmest
Warmest since:
2015
Ties: 1904, 1980
Sep–Dec 1930
4-Month
48.0°F
(8.9°C)
48.6°F
(9.2°C)
-0.6°F
(-0.3°C)
40th Coolest
Coolest since:
1976
88th Warmest
Warmest since:
1931
Ties: 1960
Aug–Dec 1930
5-Month
52.9°F
(11.6°C)
53.3°F
(11.8°C)
-0.4°F
(-0.2°C)
36th Coolest
Coolest since:
1976
92nd Warmest
Warmest since:
1931
Ties: 1932, 1972, 1996
Jul–Dec 1930
6-Month
56.8°F
(13.8°C)
56.8°F
(13.8°C)
0.0°F
(0.0°C)
56th Coolest
Coolest since:
1976
72nd Warmest
Warmest since:
1931
Ties: 1977
Jun–Dec 1930
7-Month
58.7°F
(14.8°C)
58.7°F
(14.8°C)
0.0°F
(0.0°C)
57th Coolest
Coolest since:
1976
71st Warmest
Warmest since:
1931
Ties: 1980, 1988, 2008
May–Dec 1930
8-Month
59.2°F
(15.1°C)
59.0°F
(15.0°C)
0.2°F
(0.1°C)
56th Coolest
Coolest since:
1917
72nd Warmest
Warmest since:
1931
Ties: 1905, 1955
Apr–Dec 1930
9-Month
58.6°F
(14.8°C)
58.2°F
(14.6°C)
0.4°F
(0.2°C)
59th Coolest
Coolest since:
1917
69th Warmest
Warmest since:
2015
Ties: 1912, 1944, 1947, 1978, 2003
Mar–Dec 1930
10-Month
56.6°F
(13.7°C)
56.4°F
(13.6°C)
0.2°F
(0.1°C)
56th Coolest
Coolest since:
1917
72nd Warmest
Warmest since:
2016
Ties: 1906, 1923, 1927, 1944, 1945, 1975
Feb–Dec 1930
11-Month
55.1°F
(12.8°C)
54.2°F
(12.3°C)
0.9°F
(0.5°C)
88th Coolest
Coolest since:
1917
40th Warmest
Warmest since:
2012
Ties: 1908, 1936, 1957, 1977
Jan–Dec 1930
12-Month
52.9°F
(11.6°C)
52.2°F
(11.2°C)
0.7°F
(0.4°C)
86th Coolest
Coolest since:
1917
42nd Warmest
Warmest since:
2012
Ties: 1898, 1927, 1934
Jul 1929–Dec 1930
18-Month
53.8°F
(12.1°C)
53.8°F
(12.1°C)
0.0°F
(0.0°C)
55th Coolest
Coolest since:
1904, 1917
72nd Warmest
Warmest since:
2012, 2016
Ties: 1897, 1972, 1984, 1988
Jan 1929–Dec 1930
24-Month
52.1°F
(11.2°C)
52.2°F
(11.2°C)
-0.1°F
(0.0°C)
47th Coolest
Coolest since:
1979
80th Warmest
Warmest since:
2017
Ties: 1908, 1912, 1920, 1937, 1940, 1943, 1948, 1971, 1983, 1994, 2015
Jan 1928–Dec 1930
36-Month
51.9°F
(11.1°C)
52.2°F
(11.2°C)
-0.3°F
(-0.1°C)
36th Coolest
Coolest since:
1980
90th Warmest
Warmest since:
2018
Ties: 1897, 1916, 1929, 1959, 1996
Jan 1927–Dec 1930
48-Month
52.1°F
(11.2°C)
52.1°F
(11.2°C)
0.0°F
(0.0°C)
42nd Coolest
Coolest since:
1979
83rd Warmest
Warmest since:
2019
Ties: 1902, 1925, 1943, 1958, 1959, 1995
Jan 1926–Dec 1930
60-Month
51.9°F
(11.1°C)
52.2°F
(11.2°C)
-0.3°F
(-0.1°C)
34th Coolest
Coolest since:
1980
90th Warmest
Warmest since:
2020
Ties: 1916, 1926, 1985, 1996

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