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 February 2021. For more information, please see Climatological Rankings.


Pennsylvania

Average Temperature Rankings, September 1999

View Period (Months):All1234567891011121824364860
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
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: 1997 1918
44th Warmest Warmest since: 1998 1961
Ties: 1911, 1932, 1946, 1968
Aug–Sep 1999
2-Month
65.6°F
(18.7°C)
65.0°F
(18.3°C)
0.6°F
(0.4°C)
77th Coolest Coolest since: 1997 1963
50th Warmest Warmest since: 1998 2016
Ties: 1910, 1938, 1965, 1985, 2017
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: 1998 1924, 1962, 1963, 1976
22nd Warmest Warmest since: 1988 2016
Ties: 1983, 1988
Jun–Sep 1999
4-Month
68.2°F
(20.1°C)
66.7°F
(19.3°C)
1.5°F
(0.8°C)
110th Coolest Coolest since: 1998 1924
17th Warmest Warmest since: 1959 2005, 2016
Ties: 1936, 2015
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: 1997 1924
23rd Warmest Warmest since: 1998 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: 1997 1907, 1924
18th Warmest Warmest since: 1998 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: 1997 1924
26th Warmest Warmest since: 1998 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: 1997 1924
14th Warmest Warmest since: 1998 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)
108th Coolest Coolest since: 1997 1940
19th Warmest Warmest since: 1998 2012
Dec 1998–Sep 1999
10-Month
50.9°F
(10.5°C)
48.7°F
(9.3°C)
2.2°F
(1.2°C)
115th Coolest Coolest since: 1997 1904
11th Warmest Warmest since: 1998 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)
114th Coolest Coolest since: 1997 1904
12th Warmest Warmest since: 1998 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: 1997 1904
11th Warmest Warmest since: 1998 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: 1998 1918
7th Warmest Warmest since: 1991 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: 1998 1905
4th 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: 1998 1979
11th Warmest Warmest since: 1933 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: 1998 1907
24th Warmest Warmest since: 1993 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: 1998 1908
19th Warmest Warmest since: 1991 2020
Ties: 1991, 2000, 2004, 2005, 2007

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published March 2021, retrieved on March 9, 2021 from https://www.ncdc.noaa.gov/cag/