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 1998

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PeriodValue1901-2000
Mean
AnomalyRank
(1895-2022)
Warmest/Coolest
Since
Record
December 1998
1-Month
37.9°F
(3.3°C)
32.4°F
(0.2°C)
5.5°F
(3.1°C)
113th Coolest
Coolest since:
1989
16th Warmest
Warmest since:
2015
Nov–Dec 1998
2-Month
41.6°F
(5.3°C)
37.4°F
(3.0°C)
4.2°F
(2.3°C)
118th Coolest
Coolest since:
1976
11th Warmest
Warmest since:
2015
Ties: 1923, 1946
Oct–Dec 1998
3-Month
46.4°F
(8.0°C)
43.0°F
(6.1°C)
3.4°F
(1.9°C)
115th Coolest
Coolest since:
1917
14th Warmest
Warmest since:
2015
Ties: 2007
Sep–Dec 1998
4-Month
52.2°F
(11.2°C)
48.7°F
(9.3°C)
3.5°F
(1.9°C)
123rd Coolest
Coolest since:
1976
6th Warmest
Warmest since:
1931
Aug–Dec 1998
5-Month
56.4°F
(13.6°C)
53.4°F
(11.9°C)
3.0°F
(1.7°C)
122nd Coolest
Coolest since:
1976
7th Warmest
Warmest since:
1931
Jul–Dec 1998
6-Month
59.3°F
(15.2°C)
56.8°F
(13.8°C)
2.5°F
(1.4°C)
121st Coolest
Coolest since:
1976
8th Warmest
Warmest since:
1931
Jun–Dec 1998
7-Month
60.8°F
(16.0°C)
58.7°F
(14.8°C)
2.1°F
(1.2°C)
119th Coolest
Coolest since:
1976
10th Warmest
Warmest since:
1931
Ties: 1971
May–Dec 1998
8-Month
61.5°F
(16.4°C)
59.0°F
(15.0°C)
2.5°F
(1.4°C)
124th Coolest
Coolest since:
1917
5th Warmest
Warmest since:
1931
Ties: 1900, 2018, 2021
Apr–Dec 1998
9-Month
60.5°F
(15.8°C)
58.2°F
(14.6°C)
2.3°F
(1.2°C)
124th Coolest
Coolest since:
1917
5th Warmest
Warmest since:
2015
Mar–Dec 1998
10-Month
58.7°F
(14.8°C)
56.5°F
(13.6°C)
2.2°F
(1.2°C)
121st Coolest
Coolest since:
1917
8th Warmest
Warmest since:
2016
Ties: 1931, 2011
Feb–Dec 1998
11-Month
57.0°F
(13.9°C)
54.3°F
(12.4°C)
2.7°F
(1.5°C)
125th Coolest
Coolest since:
1917
4th Warmest
Warmest since:
2012
Jan–Dec 1998
12-Month
55.3°F
(12.9°C)
52.2°F
(11.2°C)
3.1°F
(1.7°C)
127th Coolest
Coolest since:
1917
2nd Warmest
Warmest since:
2012
Ties: 1921
Jul 1997–Dec 1998
18-Month
55.5°F
(13.1°C)
53.7°F
(12.1°C)
1.8°F
(1.0°C)
118th Coolest
Coolest since:
1904, 1917
10th Warmest
Warmest since:
2012, 2016
Ties: 2002
Jan 1997–Dec 1998
24-Month
53.4°F
(11.9°C)
52.2°F
(11.2°C)
1.2°F
(0.7°C)
105th Coolest
Coolest since:
1979
23rd Warmest
Warmest since:
2017
Ties: 1934, 1987, 2005
Jan 1996–Dec 1998
36-Month
52.7°F
(11.5°C)
52.2°F
(11.2°C)
0.5°F
(0.3°C)
81st Coolest
Coolest since:
1980
46th Warmest
Warmest since:
2018
Ties: 1898, 1938, 1948, 1949
Jan 1995–Dec 1998
48-Month
52.5°F
(11.4°C)
52.2°F
(11.2°C)
0.3°F
(0.2°C)
70th Coolest
Coolest since:
1979
56th Warmest
Warmest since:
2019
Ties: 1911, 1940, 1942, 1948, 1952, 1989
Jan 1994–Dec 1998
60-Month
52.5°F
(11.4°C)
52.2°F
(11.2°C)
0.3°F
(0.2°C)
69th Coolest
Coolest since:
1980
56th Warmest
Warmest since:
2020
Ties: 1924, 1940, 1945, 1947, 1952, 1988

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