Climate at a Glance

Statewide Rankings

Look up monthly rankings for 1-12, 18, 24, 36, 48, and 60-month time periods using the options below. Data and statistics are as of August 2021. For more information, please see Climatological Rankings.


Pennsylvania

Average Temperature Rankings, December 1998

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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
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)
120th Coolest Coolest since: 1997 1989
7th Warmest Warmest since: 1984 2015
Nov–Dec 1998
2-Month
38.8°F
(3.8°C)
34.2°F
(1.2°C)
4.6°F
(2.6°C)
119th Coolest Coolest since: 1997 1917
8th Warmest Warmest since: 1994 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)
117th Coolest Coolest since: 1997 1917
10th Warmest Warmest since: 1990 2015
Sep–Dec 1998
4-Month
48.5°F
(9.2°C)
45.1°F
(7.3°C)
3.4°F
(1.9°C)
121st Coolest Coolest since: 1997 1917
6th Warmest Warmest since: 1971 2015
Aug–Dec 1998
5-Month
52.8°F
(11.6°C)
49.7°F
(9.8°C)
3.1°F
(1.8°C)
120th Coolest Coolest since: 1997 1917
7th Warmest Warmest since: 1931 2015
Jul–Dec 1998
6-Month
55.6°F
(13.1°C)
53.2°F
(11.8°C)
2.4°F
(1.3°C)
120th Coolest Coolest since: 1997 1976
7th Warmest Warmest since: 1931 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)
117th Coolest Coolest since: 1997 1917
10th Warmest Warmest since: 1931 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)
120th Coolest Coolest since: 1997 1917
7th Warmest Warmest since: 1931 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)
122nd Coolest Coolest since: 1997 1917
5th Warmest Warmest since: 1931 2015
Mar–Dec 1998
10-Month
55.1°F
(12.8°C)
52.6°F
(11.4°C)
2.5°F
(1.4°C)
122nd Coolest Coolest since: 1997 1917
5th Warmest Warmest to Date 2012
Feb–Dec 1998
11-Month
53.3°F
(11.8°C)
50.2°F
(10.1°C)
3.1°F
(1.7°C)
125th Coolest Coolest since: 1997 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)
126th Coolest Coolest since: 1997 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)
120th Coolest Coolest since: 1997 1904
6th Warmest Warmest since: 1991 2012
Ties: 1991, 2002
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: 1997 1905
13th Warmest Warmest since: 1991 2012
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: 1997 1905, 1926
25th Warmest Warmest since: 1992 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: 1997 1907
32nd Warmest Warmest since: 1993 2013, 2019, 2020
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: 1997 1905, 1907
35th Warmest Warmest since: 1994 2020
Ties: 1932, 1954, 1990

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published September 2021, retrieved on September 17, 2021 from https://www.ncdc.noaa.gov/cag/