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 September 2021. For more information, please see Climatological Rankings.
Pennsylvania
Average Temperature Rankings, September 1991
View Period (Months):All1234567891011121824364860
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| Period | Value | 1901-2000 Mean |
Anomaly | Rank (1895-2021) |
Warmest/Coolest Since |
Record |
|---|---|---|---|---|---|---|
|
September 1991 1-Month |
60.9°F (16.1°C) | 61.7°F (16.5°C) |
-0.8°F (-0.4°C) | 39th Coolest | Coolest since: 1990 | 1918 |
| 89th Warmest | Warmest since: 1989 | 1961 | ||||
| Ties: 1958 | ||||||
|
Aug–Sep 1991 2-Month |
65.8°F (18.8°C) | 65.0°F (18.3°C) |
0.8°F (0.5°C) | 81st Coolest | Coolest since: 1990 | 1963 |
| 47th Warmest | Warmest since: 1988 | 2016 | ||||
| Ties: 1988 | ||||||
|
Jul–Sep 1991 3-Month |
67.9°F (19.9°C) | 66.9°F (19.4°C) |
1.0°F (0.5°C) | 95th Coolest | Coolest since: 1990 | 1924, 1962, 1963, 1976 |
| 33rd Warmest | Warmest since: 1988 | 2016 | ||||
| Ties: 1934, 1968, 1973, 2007 | ||||||
|
Jun–Sep 1991 4-Month |
68.0°F (20.0°C) | 66.6°F (19.2°C) |
1.4°F (0.8°C) | 103rd Coolest | Coolest since: 1990 | 1924 |
| 25th Warmest | Warmest since: 1973 | 2005, 2016 | ||||
| Ties: 1939, 1952, 1973 | ||||||
|
May–Sep 1991 5-Month |
67.3°F (19.6°C) | 64.8°F (18.2°C) |
2.5°F (1.4°C) | 122nd Coolest | Coolest since: 1990 | 1924 |
| 6th Warmest | Warmest since: 1900 | 2018 | ||||
| Ties: 2015 | ||||||
|
Apr–Sep 1991 6-Month |
64.4°F (18.0°C) | 61.8°F (16.6°C) |
2.6°F (1.4°C) | 125th Coolest | Coolest since: 1990 | 1907, 1924 |
| 3rd Warmest | Warmest to Date | 2010 | ||||
|
Mar–Sep 1991 7-Month |
60.8°F (16.0°C) | 58.1°F (14.5°C) |
2.7°F (1.5°C) | 123rd Coolest | Coolest since: 1990 | 1924 |
| 5th Warmest | Warmest since: 1921 | 2010 | ||||
|
Feb–Sep 1991 8-Month |
57.3°F (14.1°C) | 54.2°F (12.3°C) |
3.1°F (1.8°C) | 125th Coolest | Coolest since: 1990 | 1924 |
| 3rd Warmest | Warmest since: 1921 | 2012 | ||||
| Ties: 2016 | ||||||
|
Jan–Sep 1991 9-Month |
53.9°F (12.2°C) | 51.0°F (10.6°C) |
2.9°F (1.6°C) | 123rd Coolest | Coolest since: 1990 | 1940 |
| 5th Warmest | Warmest since: 1921 | 2012 | ||||
| Ties: 2020 | ||||||
|
Dec 1990–Sep 1991 10-Month |
51.9°F (11.1°C) | 48.7°F (9.3°C) |
3.2°F (1.8°C) | 121st Coolest | Coolest since: 1990 | 1904 |
| 6th Warmest | Warmest since: 1921 | 2012 | ||||
|
Nov 1990–Sep 1991 11-Month |
51.1°F (10.6°C) | 47.9°F (8.8°C) |
3.2°F (1.8°C) | 123rd Coolest | Coolest since: 1990 | 1904 |
| 4th Warmest | Warmest to Date | 2012 | ||||
|
Oct 1990–Sep 1991 12-Month |
51.3°F (10.7°C) | 48.1°F (8.9°C) |
3.2°F (1.8°C) | 123rd Coolest | Coolest since: 1990 | 1904 |
| 4th Warmest | Warmest to Date | 2012 | ||||
|
Apr 1990–Sep 1991 18-Month |
54.7°F (12.6°C) | 52.7°F (11.5°C) |
2.0°F (1.1°C) | 119th Coolest | Coolest since: 1990 | 1918 |
| 8th Warmest | Warmest since: 1932 | 2012 | ||||
| Ties: 1999, 2006 | ||||||
|
Oct 1989–Sep 1991 24-Month |
50.0°F (10.0°C) | 48.1°F (8.9°C) |
1.9°F (1.1°C) | 117th Coolest | Coolest since: 1990 | 1905 |
| 9th Warmest | Warmest since: 1933 | 2017 | ||||
| Ties: 2002, 2016 | ||||||
|
Oct 1988–Sep 1991 36-Month |
49.4°F (9.7°C) | 48.1°F (8.9°C) |
1.3°F (0.8°C) | 109th Coolest | Coolest since: 1990 | 1979 |
| 16th Warmest | Warmest since: 1955 | 2018 | ||||
| Ties: 1932, 1955, 1992, 2001, 2004, 2010 | ||||||
|
Oct 1987–Sep 1991 48-Month |
49.2°F (9.6°C) | 48.1°F (8.9°C) |
1.1°F (0.7°C) | 103rd Coolest | Coolest since: 1990 | 1907 |
| 21st Warmest | Warmest since: 1955 | 2019 | ||||
| Ties: 1932, 2003, 2016 | ||||||
|
Oct 1986–Sep 1991 60-Month |
49.2°F (9.6°C) | 48.1°F (8.9°C) |
1.1°F (0.7°C) | 103rd Coolest | Coolest since: 1990 | 1908 |
| 20th Warmest | Warmest since: 1933 | 2020 | ||||
| Ties: 1999, 2000, 2004, 2005, 2007 | ||||||
Citing This Page
- NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published October 2021, retrieved on October 24, 2021 from https://www.ncdc.noaa.gov/cag/