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 1990

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  • Record Coolest
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Warmest/Coolest
Since
Record
December 1990
1-Month
34.4°F
(1.3°C)
28.9°F
(-1.7°C)
5.5°F
(3.0°C)
113th Coolest
Coolest since:
1989
15th Warmest
Warmest since:
2015
Ties: 1918
Nov–Dec 1990
2-Month
38.8°F
(3.8°C)
34.2°F
(1.2°C)
4.6°F
(2.6°C)
120th Coolest
Coolest since:
1917
8th Warmest
Warmest since:
2015
Ties: 1998
Oct–Dec 1990
3-Month
43.7°F
(6.5°C)
39.7°F
(4.3°C)
4.0°F
(2.2°C)
123rd Coolest
Coolest since:
1917
5th Warmest
Warmest since:
2015
Ties: 2011
Sep–Dec 1990
4-Month
48.0°F
(8.9°C)
45.2°F
(7.3°C)
2.8°F
(1.6°C)
117th Coolest
Coolest since:
1917
11th Warmest
Warmest since:
2015
Ties: 1900, 1982
Aug–Dec 1990
5-Month
52.0°F
(11.1°C)
49.8°F
(9.9°C)
2.2°F
(1.2°C)
114th Coolest
Coolest since:
1917
14th Warmest
Warmest since:
2015
Jul–Dec 1990
6-Month
55.0°F
(12.8°C)
53.2°F
(11.8°C)
1.8°F
(1.0°C)
109th Coolest
Coolest since:
1976
19th Warmest
Warmest since:
1931, 2015
Ties: 1959
Jun–Dec 1990
7-Month
56.6°F
(13.7°C)
55.1°F
(12.8°C)
1.5°F
(0.9°C)
107th Coolest
Coolest since:
1917
21st Warmest
Warmest since:
2015
Ties: 1991, 1994, 2019
May–Dec 1990
8-Month
56.4°F
(13.6°C)
55.4°F
(13.0°C)
1.0°F
(0.6°C)
95th Coolest
Coolest since:
1917
33rd Warmest
Warmest since:
2015
Ties: 1921, 1982, 1987
Apr–Dec 1990
9-Month
55.5°F
(13.1°C)
54.4°F
(12.4°C)
1.1°F
(0.7°C)
99th Coolest
Coolest since:
1917
29th Warmest
Warmest since:
2015
Ties: 1911, 1973, 1987
Mar–Dec 1990
10-Month
54.0°F
(12.2°C)
52.6°F
(11.4°C)
1.4°F
(0.8°C)
108th Coolest
Coolest since:
1917
20th Warmest
Warmest since:
2021
Ties: 1900, 2018
Feb–Dec 1990
11-Month
52.2°F
(11.2°C)
50.2°F
(10.1°C)
2.0°F
(1.1°C)
116th Coolest
Coolest since:
1917
12th Warmest
Warmest since:
2012
Ties: 2006, 2018
Jan–Dec 1990
12-Month
50.7°F
(10.4°C)
48.1°F
(8.9°C)
2.6°F
(1.5°C)
121st Coolest
Coolest since:
1917
7th Warmest
Warmest to Date
1998, 2012
Ties: 1991
Jul 1989–Dec 1990
18-Month
50.9°F
(10.5°C)
49.9°F
(9.9°C)
1.0°F
(0.6°C)
102nd Coolest
Coolest since:
1904
25th Warmest
Warmest since:
2012
Ties: 2015
Jan 1989–Dec 1990
24-Month
49.1°F
(9.5°C)
48.2°F
(9.0°C)
0.9°F
(0.5°C)
97th Coolest
Coolest since:
1905
30th Warmest
Warmest since:
2021
Ties: 2003
Jan 1988–Dec 1990
36-Month
48.7°F
(9.3°C)
48.1°F
(8.9°C)
0.6°F
(0.4°C)
84th Coolest
Coolest since:
1905, 1926
42nd Warmest
Warmest since:
2012
Ties: 1946, 1950, 1951, 1988
Jan 1987–Dec 1990
48-Month
48.9°F
(9.4°C)
48.2°F
(9.0°C)
0.7°F
(0.4°C)
91st Coolest
Coolest since:
1907
34th Warmest
Warmest since:
2021
Ties: 1922, 1956
Jan 1986–Dec 1990
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
36th Warmest
Warmest since:
2020, 2021
Ties: 1932, 1954, 1998

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