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 2020

View Period (Months):
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  • Record Coolest
  • Bottom 1/10
  • Bottom 1/3
  • Normal
  • Top 1/3
  • Top 1/10
  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
December 2020
1-Month
32.1°F
(0.1°C)
28.9°F
(-1.7°C)
3.2°F
(1.8°C)
97th Coolest
Coolest since:
1989
32nd Warmest
Warmest since:
2015
Ties: 1997
Nov–Dec 2020
2-Month
38.4°F
(3.6°C)
34.1°F
(1.2°C)
4.3°F
(2.4°C)
118th Coolest
Coolest since:
1917
11th Warmest
Warmest since:
2015
Oct–Dec 2020
3-Month
43.0°F
(6.1°C)
39.6°F
(4.2°C)
3.4°F
(1.9°C)
117th Coolest
Coolest since:
1917
12th Warmest
Warmest since:
2015
Ties: 1941
Sep–Dec 2020
4-Month
47.8°F
(8.8°C)
45.1°F
(7.3°C)
2.7°F
(1.5°C)
114th Coolest
Coolest since:
1917
15th Warmest
Warmest since:
2015
Aug–Dec 2020
5-Month
52.6°F
(11.4°C)
49.8°F
(9.9°C)
2.8°F
(1.5°C)
119th Coolest
Coolest since:
1917
10th Warmest
Warmest since:
2015
Jul–Dec 2020
6-Month
56.3°F
(13.5°C)
53.2°F
(11.8°C)
3.1°F
(1.7°C)
123rd Coolest
Coolest since:
1976
6th Warmest
Warmest since:
1931, 2015
Jun–Dec 2020
7-Month
57.8°F
(14.3°C)
55.0°F
(12.8°C)
2.8°F
(1.5°C)
123rd Coolest
Coolest since:
1917
6th Warmest
Warmest since:
2015
Ties: 1900
May–Dec 2020
8-Month
57.6°F
(14.2°C)
55.4°F
(13.0°C)
2.2°F
(1.2°C)
119th Coolest
Coolest since:
1917
10th Warmest
Warmest since:
2015
Ties: 2007
Apr–Dec 2020
9-Month
56.2°F
(13.4°C)
54.4°F
(12.4°C)
1.8°F
(1.0°C)
111th Coolest
Coolest since:
1917
18th Warmest
Warmest since:
2015
Mar–Dec 2020
10-Month
54.8°F
(12.7°C)
52.5°F
(11.4°C)
2.3°F
(1.3°C)
118th Coolest
Coolest since:
1917
11th Warmest
Warmest since:
2021
Feb–Dec 2020
11-Month
52.9°F
(11.6°C)
50.2°F
(10.1°C)
2.7°F
(1.5°C)
123rd Coolest
Coolest since:
1917
6th Warmest
Warmest since:
2012
Ties: 1991
Jan–Dec 2020
12-Month
51.2°F
(10.7°C)
48.2°F
(9.0°C)
3.0°F
(1.7°C)
126th Coolest
Coolest since:
1917
3rd Warmest
Warmest since:
1998, 2012
Ties: 2021
Jul 2019–Dec 2020
18-Month
52.5°F
(11.4°C)
49.9°F
(9.9°C)
2.6°F
(1.5°C)
123rd Coolest
Coolest since:
1904
5th Warmest
Warmest since:
2012
Jan 2019–Dec 2020
24-Month
50.5°F
(10.3°C)
48.1°F
(8.9°C)
2.4°F
(1.4°C)
122nd Coolest
Coolest since:
1905
6th Warmest
Warmest since:
2021
Jan 2018–Dec 2020
36-Month
50.3°F
(10.2°C)
48.2°F
(9.0°C)
2.1°F
(1.2°C)
121st Coolest
Coolest since:
1905, 1926
6th Warmest
Warmest since:
2012
Ties: 2017
Jan 2017–Dec 2020
48-Month
50.3°F
(10.2°C)
48.1°F
(8.9°C)
2.2°F
(1.3°C)
123rd Coolest
Coolest since:
1907
3rd Warmest
Warmest since:
2021, 2022
Ties: 2013, 2019
Jan 2016–Dec 2020
60-Month
50.5°F
(10.3°C)
48.1°F
(8.9°C)
2.4°F
(1.4°C)
124th Coolest
Coolest since:
1905, 1907
1st Warmest
Warmest to Date
2020, 2021
Ties: 2021

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