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 2021

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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
December 2021
1-Month
37.6°F
(3.1°C)
28.9°F
(-1.7°C)
8.7°F
(4.8°C)
127th Coolest
Coolest since:
1989
2nd Warmest
Warmest since:
2015
Nov–Dec 2021
2-Month
38.3°F
(3.5°C)
34.1°F
(1.2°C)
4.2°F
(2.3°C)
117th Coolest
Coolest since:
1917
12th Warmest
Warmest since:
2015
Oct–Dec 2021
3-Month
44.8°F
(7.1°C)
39.6°F
(4.2°C)
5.2°F
(2.9°C)
126th Coolest
Coolest since:
1917
3rd Warmest
Warmest since:
2015
Sep–Dec 2021
4-Month
49.7°F
(9.8°C)
45.2°F
(7.3°C)
4.5°F
(2.5°C)
126th Coolest
Coolest since:
1917
3rd Warmest
Warmest since:
2015
Aug–Dec 2021
5-Month
54.2°F
(12.3°C)
49.8°F
(9.9°C)
4.4°F
(2.4°C)
127th Coolest
Coolest since:
1917
2nd Warmest
Warmest since:
2015
Ties: 1931
Jul–Dec 2021
6-Month
57.1°F
(13.9°C)
53.2°F
(11.8°C)
3.9°F
(2.1°C)
126th Coolest
Coolest since:
1976
3rd Warmest
Warmest since:
1931, 2015
Jun–Dec 2021
7-Month
58.7°F
(14.8°C)
55.1°F
(12.8°C)
3.6°F
(2.0°C)
127th Coolest
Coolest since:
1917
2nd Warmest
Warmest since:
2015
Ties: 1931
May–Dec 2021
8-Month
58.5°F
(14.7°C)
55.4°F
(13.0°C)
3.1°F
(1.7°C)
126th Coolest
Coolest since:
1917
3rd Warmest
Warmest since:
2015
Ties: 2011
Apr–Dec 2021
9-Month
57.5°F
(14.2°C)
54.4°F
(12.4°C)
3.1°F
(1.8°C)
127th Coolest
Coolest since:
1917
2nd Warmest
Warmest since:
2015
Ties: 2011
Mar–Dec 2021
10-Month
55.8°F
(13.2°C)
52.6°F
(11.4°C)
3.2°F
(1.8°C)
128th Coolest
Coolest since:
1917
1st Warmest
Warmest to Date
2021
Feb–Dec 2021
11-Month
53.2°F
(11.8°C)
50.2°F
(10.1°C)
3.0°F
(1.7°C)
125th Coolest
Coolest since:
1917
4th Warmest
Warmest since:
2012
Jan–Dec 2021
12-Month
51.2°F
(10.7°C)
48.1°F
(8.9°C)
3.1°F
(1.8°C)
126th Coolest
Coolest since:
1917
3rd Warmest
Warmest since:
1998, 2012
Ties: 2020
Jul 2020–Dec 2021
18-Month
52.9°F
(11.6°C)
49.8°F
(9.9°C)
3.1°F
(1.7°C)
125th Coolest
Coolest since:
1904
3rd Warmest
Warmest since:
2012
Jan 2020–Dec 2021
24-Month
51.2°F
(10.7°C)
48.1°F
(8.9°C)
3.1°F
(1.8°C)
127th Coolest
Coolest since:
1905
1st Warmest
Warmest to Date
2021
Jan 2019–Dec 2021
36-Month
50.7°F
(10.4°C)
48.1°F
(8.9°C)
2.6°F
(1.5°C)
125th Coolest
Coolest since:
1905, 1926
2nd Warmest
Warmest since:
2012
Ties: 2022
Jan 2018–Dec 2021
48-Month
50.5°F
(10.3°C)
48.1°F
(8.9°C)
2.4°F
(1.4°C)
125th Coolest
Coolest since:
1907
1st Warmest
Warmest to Date
2021, 2022
Ties: 2022
Jan 2017–Dec 2021
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 since:
2020, 2021
Ties: 2020

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