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, September 1999

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Warmest/Coolest
Since		Record
September 1999
1-Month		62.8°F
(17.1°C)		61.7°F
(16.5°C)		1.1°F
(0.6°C)		83rd Coolest
Coolest since:
1918
46th Warmest
Warmest since:
1961
Ties: 1911, 1932, 1946, 1968
Aug–Sep 1999
2-Month		65.7°F
(18.7°C)		65.1°F
(18.4°C)		0.6°F
(0.3°C)		79th Coolest
Coolest since:
1963
50th Warmest
Warmest since:
2016
Ties: 1926, 1938, 1965, 2009
Jul–Sep 1999
3-Month		68.4°F
(20.2°C)		66.8°F
(19.3°C)		1.6°F
(0.9°C)		105th Coolest
Coolest since:
1924, 1962, 1963, 1976
24th Warmest
Warmest since:
2016
Ties: 1983, 1988
Jun–Sep 1999
4-Month		68.2°F
(20.1°C)		66.6°F
(19.2°C)		1.6°F
(0.9°C)		109th Coolest
Coolest since:
1924
20th Warmest
Warmest since:
2005, 2016
Ties: 1936
May–Sep 1999
5-Month		66.4°F
(19.1°C)		64.8°F
(18.2°C)		1.6°F
(0.9°C)		104th Coolest
Coolest since:
1924
25th Warmest
Warmest since:
2018
Ties: 1906, 2002, 2020
Apr–Sep 1999
6-Month		63.4°F
(17.4°C)		61.8°F
(16.6°C)		1.6°F
(0.8°C)		109th Coolest
Coolest since:
1907, 1924
20th Warmest
Warmest since:
2010
Ties: 2017
Mar–Sep 1999
7-Month		59.2°F
(15.1°C)		58.1°F
(14.5°C)		1.1°F
(0.6°C)		101st Coolest
Coolest since:
1924
28th Warmest
Warmest since:
2010
Ties: 1908
Feb–Sep 1999
8-Month		55.8°F
(13.2°C)		54.2°F
(12.3°C)		1.6°F
(0.9°C)		113th Coolest
Coolest since:
1924
16th Warmest
Warmest since:
2012
Ties: 1898, 1945, 1949
Jan–Sep 1999
9-Month		52.6°F
(11.4°C)		51.0°F
(10.6°C)		1.6°F
(0.8°C)		109th Coolest
Coolest since:
1940
20th Warmest
Warmest since:
2012
Dec 1998–Sep 1999
10-Month		50.9°F
(10.5°C)		48.8°F
(9.3°C)		2.1°F
(1.2°C)		115th Coolest
Coolest since:
1904
13th Warmest
Warmest since:
2012
Ties: 2019
Nov 1998–Sep 1999
11-Month		50.1°F
(10.1°C)		47.9°F
(8.8°C)		2.2°F
(1.3°C)		115th Coolest
Coolest since:
1904
13th Warmest
Warmest since:
2012
Oct 1998–Sep 1999
12-Month		50.2°F
(10.1°C)		48.1°F
(8.9°C)		2.1°F
(1.2°C)		115th Coolest
Coolest since:
1904
13th Warmest
Warmest since:
2012
Ties: 1949
Apr 1998–Sep 1999
18-Month		54.7°F
(12.6°C)		52.7°F
(11.5°C)		2.0°F
(1.1°C)		119th Coolest
Coolest since:
1918
9th Warmest
Warmest since:
2012
Ties: 1991, 2006
Oct 1997–Sep 1999
24-Month		50.6°F
(10.3°C)		48.1°F
(8.9°C)		2.5°F
(1.4°C)		121st Coolest
Coolest since:
1905
6th Warmest
Warmest to Date
2017
Oct 1996–Sep 1999
36-Month		49.7°F
(9.8°C)		48.1°F
(8.9°C)		1.6°F
(0.9°C)		113th Coolest
Coolest since:
1979
13th Warmest
Warmest since:
2018
Ties: 1933
Oct 1995–Sep 1999
48-Month		49.1°F
(9.5°C)		48.1°F
(8.9°C)		1.0°F
(0.6°C)		99th Coolest
Coolest since:
1907
26th Warmest
Warmest since:
2019
Ties: 1934, 1992, 1993, 2004
Oct 1994–Sep 1999
60-Month		49.2°F
(9.6°C)		48.1°F
(8.9°C)		1.1°F
(0.7°C)		103rd Coolest
Coolest since:
1908
21st Warmest
Warmest since:
2020
Ties: 1991, 2000, 2004, 2005, 2007

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