Statewide Rankings

Statewide Data Info
Please note, Degree Days and Palmer Indices are not available for Alaska. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Pennsylvania

Average Temperature Rankings, December 1998

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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
(1895-2022)
Warmest/Coolest
Since
Record
December 1998
1-Month
36.0°F
(2.2°C)
28.9°F
(-1.7°C)
7.1°F
(3.9°C)
121st Coolest
Coolest since:
1989
8th Warmest
Warmest since:
2015
Nov–Dec 1998
2-Month
38.8°F
(3.8°C)
34.2°F
(1.2°C)
4.6°F
(2.6°C)
121st Coolest
Coolest since:
1917
8th Warmest
Warmest since:
2015
Ties: 1990
Oct–Dec 1998
3-Month
43.1°F
(6.2°C)
39.6°F
(4.2°C)
3.5°F
(2.0°C)
118th Coolest
Coolest since:
1917
11th Warmest
Warmest since:
2015
Sep–Dec 1998
4-Month
48.5°F
(9.2°C)
45.1°F
(7.3°C)
3.4°F
(1.9°C)
122nd Coolest
Coolest since:
1917
7th Warmest
Warmest since:
2015
Aug–Dec 1998
5-Month
52.8°F
(11.6°C)
49.7°F
(9.8°C)
3.1°F
(1.8°C)
121st Coolest
Coolest since:
1917
8th Warmest
Warmest since:
2015
Jul–Dec 1998
6-Month
55.6°F
(13.1°C)
53.2°F
(11.8°C)
2.4°F
(1.3°C)
121st Coolest
Coolest since:
1976
8th Warmest
Warmest since:
1931, 2015
Ties: 2001, 2006
Jun–Dec 1998
7-Month
57.1°F
(13.9°C)
55.1°F
(12.8°C)
2.0°F
(1.1°C)
118th Coolest
Coolest since:
1917
11th Warmest
Warmest since:
2015
Ties: 2018
May–Dec 1998
8-Month
57.7°F
(14.3°C)
55.3°F
(12.9°C)
2.4°F
(1.4°C)
121st Coolest
Coolest since:
1917
8th Warmest
Warmest since:
2015
Ties: 2012
Apr–Dec 1998
9-Month
56.8°F
(13.8°C)
54.4°F
(12.4°C)
2.4°F
(1.4°C)
123rd Coolest
Coolest since:
1917
6th Warmest
Warmest since:
2015
Mar–Dec 1998
10-Month
55.1°F
(12.8°C)
52.6°F
(11.4°C)
2.5°F
(1.4°C)
123rd Coolest
Coolest since:
1917
6th Warmest
Warmest to Date
2021
Feb–Dec 1998
11-Month
53.3°F
(11.8°C)
50.2°F
(10.1°C)
3.1°F
(1.7°C)
127th Coolest
Coolest since:
1917
2nd Warmest
Warmest to Date
2012
Ties: 2016
Jan–Dec 1998
12-Month
51.8°F
(11.0°C)
48.2°F
(9.0°C)
3.6°F
(2.0°C)
128th Coolest
Coolest since:
1917
1st Warmest
Warmest to Date
1998, 2012
Ties: 2012
Jul 1997–Dec 1998
18-Month
52.1°F
(11.2°C)
49.8°F
(9.9°C)
2.3°F
(1.3°C)
121st Coolest
Coolest since:
1904
7th Warmest
Warmest since:
2012
Ties: 1991, 2002, 2022
Jan 1997–Dec 1998
24-Month
49.9°F
(9.9°C)
48.2°F
(9.0°C)
1.7°F
(0.9°C)
113th Coolest
Coolest since:
1905
15th Warmest
Warmest since:
2021
Jan 1996–Dec 1998
36-Month
49.1°F
(9.5°C)
48.1°F
(8.9°C)
1.0°F
(0.6°C)
100th Coolest
Coolest since:
1905, 1926
27th Warmest
Warmest since:
2012
Ties: 1923, 2004, 2010
Jan 1995–Dec 1998
48-Month
49.0°F
(9.4°C)
48.2°F
(9.0°C)
0.8°F
(0.4°C)
92nd Coolest
Coolest since:
1907
34th Warmest
Warmest since:
2021, 2022
Jan 1994–Dec 1998
60-Month
48.8°F
(9.3°C)
48.1°F
(8.9°C)
0.7°F
(0.4°C)
88th Coolest
Coolest since:
1905, 1907
37th Warmest
Warmest since:
2020, 2021
Ties: 1932, 1954, 1990

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