NOAA's National Centers for Environmental Information
County Rankings
Chester County, Pennsylvania
December 1997 Average Temperature Rankings
| Period | Value | 1901-2000 Mean | Anomaly | Rank (1895-2025) | Coolest/Warmest Since | Record |
|---|---|---|---|---|---|---|
| December 1997 1-Month | 35.3°F (1.8°C) | 32.3°F (0.2°C) | 3.0°F | 93rd Coolest | Coolest since: | 1989 |
| 38th Warmest | Warmest since: | 2015 | ||||
| Ties: 1965 | ||||||
| Nov– 2-Month | 38.3°F (3.5°C) | 37.4°F (3.0°C) | 0.9°F | 70th Coolest | Coolest since: | 1917 |
| 61st Warmest | Warmest since: | 2015 | ||||
| Ties: 1938, 1972, 1993 | ||||||
| Oct– 3-Month | 43.6°F (6.4°C) | 42.9°F (6.1°C) | 0.7°F | 76th Coolest | Coolest since: | 1917 |
| 55th Warmest | Warmest since: | 2015 | ||||
| Ties: 1938, 1961, 1986 | ||||||
| Sep– 4-Month | 48.7°F (9.3°C) | 48.4°F (9.1°C) | 0.3°F | 57th Coolest | Coolest since: | 1917 |
| 74th Warmest | Warmest since: | 2015 | ||||
| Ties: 1915, 1921, 1928, 1977 | ||||||
| Aug– 5-Month | 53.2°F (11.8°C) | 53.1°F (11.7°C) | 0.1°F | 54th Coolest | Coolest since: | 1917 |
| 77th Warmest | Warmest since: | 2015 | ||||
| Ties: 1986, 1995 | ||||||
| Jul– 6-Month | 56.6°F (13.7°C) | 56.6°F (13.7°C) | 0.0°F | 46th Coolest | Coolest since: | 1917 |
| 85th Warmest | Warmest since: | 2015 | ||||
| Ties: 1895, 1897, 1927, 1930, 1965, 1974, 1996 | ||||||
| Jun– 7-Month | 58.3°F (14.6°C) | 58.3°F (14.6°C) | 0.0°F | 45th Coolest | Coolest since: | 1917 |
| 86th Warmest | Warmest since: | 2015 | ||||
| Ties: 1908, 1943, 1955 | ||||||
| May– 8-Month | 58.1°F (14.5°C) | 58.6°F (14.8°C) | -0.5°F | 28th Coolest | Coolest since: | 1917 |
| 103rd Warmest | Warmest since: | 2015 | ||||
| Apr– 9-Month | 57.1°F (13.9°C) | 57.7°F (14.3°C) | -0.6°F | 25th Coolest | Coolest since: | 1917 |
| 106th Warmest | Warmest since: | 2015 | ||||
| Ties: 1914, 1945, 1966 | ||||||
| Mar– 10-Month | 55.6°F (13.1°C) | 55.9°F (13.3°C) | -0.3°F | 38th Coolest | Coolest since: | 1917 |
| 93rd Warmest | Warmest since: | 2011 | ||||
| Ties: 1895, 1905, 1912, 1933, 1965, 1969, 1996 | ||||||
| Feb– 11-Month | 53.9°F (12.2°C) | 53.6°F (12.0°C) | 0.3°F | 68th Coolest | Coolest since: | 1904 |
| 63rd Warmest | Warmest since: | 2012, 2024 | ||||
| Jan– 12-Month | 51.9°F (11.1°C) | 51.5°F (10.8°C) | 0.4°F | 76th Coolest | Coolest since: | 1904 |
| 55th Warmest | Warmest since: | 2012 | ||||
| Jul 1996– 18-Month | 53.5°F (11.9°C) | 53.2°F (11.8°C) | 0.3°F | 69th Coolest | Coolest since: | 1904 |
| 61st Warmest | Warmest since: | 2012 | ||||
| Ties: 1901, 1937, 1992 | ||||||
| Jan 1996– 24-Month | 51.6°F (10.9°C) | 51.5°F (10.8°C) | 0.1°F | 57th Coolest | Coolest since: | 1905 |
| 73rd Warmest | Warmest since: | 2012, 2024 | ||||
| Ties: 1901, 1930, 1956, 1971, 1993 | ||||||
| Jan 1995– 36-Month | 51.8°F (11.0°C) | 51.5°F (10.8°C) | 0.3°F | 72nd Coolest | Coolest since: | 1905 |
| 57th Warmest | Warmest since: | 2012 | ||||
| Ties: 1938, 1947, 1948, 1952, 1959, 1984, 1996 | ||||||
| Jan 1994– 48-Month | 51.8°F (11.0°C) | 51.5°F (10.8°C) | 0.3°F | 71st Coolest | Coolest since: | 1907 |
| 57th Warmest | Warmest since: | 2023, 2024 | ||||
| Ties: 1900, 1921, 1947, 1973, 1989 | ||||||
| Jan 1993– 60-Month | 51.9°F (11.1°C) | 51.5°F (10.8°C) | 0.4°F | 77th Coolest | Coolest since: | 1907 |
| 50th Warmest | Warmest since: | 2024 | ||||
| Ties: 1951, 1976, 1989 | ||||||
Citing This Page
- NOAA National Centers for Environmental information, Climate at a Glance: County Rankings, published March 2025, retrieved on March 13, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/rankings
