NOAA's National Centers for Environmental Information
County Rankings
Chester County, Pennsylvania
January 1979 Average Temperature Rankings
| Period | Value | 1901-2000 Mean | Anomaly | Rank (1895-2025) | Coolest/Warmest Since | Record |
|---|---|---|---|---|---|---|
| January 1979 1-Month | 28.5°F (-1.9°C) | 29.1°F (-1.6°C) | -0.6°F | 55th Coolest | Coolest since: | 1918 |
| 77th Warmest | Warmest since: | 1932 | ||||
| Dec 1978– 2-Month | 31.6°F (-0.2°C) | 30.7°F (-0.7°C) | 0.9°F | 69th Coolest | Coolest since: | 1918 |
| 62nd Warmest | Warmest since: | 1932 | ||||
| Ties: 1900 | ||||||
| Nov 1978– 3-Month | 35.8°F (2.1°C) | 34.7°F (1.5°C) | 1.1°F | 81st Coolest | Coolest since: | 1918 |
| 50th Warmest | Warmest since: | 1932 | ||||
| Oct 1978– 4-Month | 39.9°F (4.4°C) | 39.5°F (4.2°C) | 0.4°F | 65th Coolest | Coolest since: | 1918 |
| 66th Warmest | Warmest since: | 1932 | ||||
| Ties: 1958 | ||||||
| Sep 1978– 5-Month | 44.8°F (7.1°C) | 44.6°F (7.0°C) | 0.2°F | 58th Coolest | Coolest since: | 1918 |
| 73rd Warmest | Warmest since: | 1932 | ||||
| Aug 1978– 6-Month | 49.7°F (9.8°C) | 49.1°F (9.5°C) | 0.6°F | 74th Coolest | Coolest since: | 1918 |
| 57th Warmest | Warmest since: | 1932 | ||||
| Jul 1978– 7-Month | 52.8°F (11.6°C) | 52.7°F (11.5°C) | 0.1°F | 56th Coolest | Coolest since: | 1918 |
| 75th Warmest | Warmest since: | 1932 | ||||
| Jun 1978– 8-Month | 54.8°F (12.7°C) | 54.7°F (12.6°C) | 0.1°F | 51st Coolest | Coolest since: | 1918 |
| 80th Warmest | Warmest since: | 1932, 2012, 2016 | ||||
| Ties: 1923, 1929 | ||||||
| May 1978– 9-Month | 55.3°F (12.9°C) | 55.4°F (13.0°C) | -0.1°F | 46th Coolest | Coolest since: | 1918 |
| 85th Warmest | Warmest since: | 2016 | ||||
| Apr 1978– 10-Month | 54.7°F (12.6°C) | 54.8°F (12.7°C) | -0.1°F | 43rd Coolest | Coolest since: | 1918 |
| 88th Warmest | Warmest since: | 2012, 2016 | ||||
| Mar 1978– 11-Month | 53.0°F (11.7°C) | 53.4°F (11.9°C) | -0.4°F | 31st Coolest | Coolest since: | 1918 |
| 100th Warmest | Warmest since: | 2012 | ||||
| Ties: 1928, 1964, 1966 | ||||||
| Feb 1978– 12-Month | 50.4°F (10.2°C) | 51.5°F (10.8°C) | -1.1°F | 16th Coolest | Coolest since: | 1918 |
| 115th Warmest | Warmest since: | 2012, 2013 | ||||
| Ties: 1896, 1948, 1977 | ||||||
| Aug 1977– 18-Month | 49.8°F (9.9°C) | 50.7°F (10.4°C) | -0.9°F | 13th Coolest | Coolest since: | 1905 |
| 117th Warmest | Warmest since: | 2017 | ||||
| Ties: 1904, 1911, 1926, 1935, 1936, 1959 | ||||||
| Feb 1977– 24-Month | 51.3°F (10.7°C) | 51.5°F (10.8°C) | -0.2°F | 42nd Coolest | Coolest since: | 1918 |
| 88th Warmest | Warmest since: | 2013 | ||||
| Ties: 1921, 1952, 1959, 1967, 1978 | ||||||
| Feb 1976– 36-Month | 51.0°F (10.6°C) | 51.5°F (10.8°C) | -0.5°F | 26th Coolest | Coolest since: | 1905, 1906, 1918, 1927 |
| 103rd Warmest | Warmest since: | 2013 | ||||
| Feb 1975– 48-Month | 51.2°F (10.7°C) | 51.5°F (10.8°C) | -0.3°F | 33rd Coolest | Coolest since: | 1905, 1908, 1918 |
| 95th Warmest | Warmest since: | 2024 | ||||
| Ties: 1937, 1941 | ||||||
| Feb 1974– 60-Month | 51.3°F (10.7°C) | 51.5°F (10.8°C) | -0.2°F | 39th Coolest | Coolest since: | 1908 |
| 88th Warmest | Warmest since: | 2025 | ||||
| Ties: 1900, 1914, 1916, 1925, 1926, 1939, 1944 | ||||||
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
