NOAA's National Centers for Environmental Information
County Rankings
Chester County, Pennsylvania
December 1920 Average Temperature Rankings
| Period | Value | 1901-2000 Mean | Anomaly | Rank (1895-2025) | Coolest/Warmest Since | Record |
|---|---|---|---|---|---|---|
| December 1920 1-Month | 33.4°F (0.8°C) | 32.3°F (0.2°C) | 1.1°F | 62nd Coolest | Coolest since: | 1989 |
| 69th Warmest | Warmest since: | 2015 | ||||
| Nov– 2-Month | 36.7°F (2.6°C) | 37.4°F (3.0°C) | -0.7°F | 42nd Coolest | Coolest since: | 1917 |
| 89th Warmest | Warmest since: | 2015 | ||||
| Oct– 3-Month | 43.8°F (6.6°C) | 42.9°F (6.1°C) | 0.9°F | 80th Coolest | Coolest since: | 1917 |
| 51st Warmest | Warmest since: | 2015 | ||||
| Sep– 4-Month | 49.2°F (9.6°C) | 48.4°F (9.1°C) | 0.8°F | 79th Coolest | Coolest since: | 1917 |
| 52nd Warmest | Warmest since: | 2015 | ||||
| Aug– 5-Month | 53.9°F (12.2°C) | 53.1°F (11.7°C) | 0.8°F | 81st Coolest | Coolest since: | 1917 |
| 50th Warmest | Warmest since: | 2015 | ||||
| Jul– 6-Month | 56.9°F (13.8°C) | 56.6°F (13.7°C) | 0.3°F | 69th Coolest | Coolest since: | 1917 |
| 62nd Warmest | Warmest since: | 2015 | ||||
| Jun– 7-Month | 58.6°F (14.8°C) | 58.3°F (14.6°C) | 0.3°F | 58th Coolest | Coolest since: | 1917 |
| 73rd Warmest | Warmest since: | 2015 | ||||
| May– 8-Month | 58.5°F (14.7°C) | 58.6°F (14.8°C) | -0.1°F | 38th Coolest | Coolest since: | 1917 |
| 93rd Warmest | Warmest since: | 2015 | ||||
| Apr– 9-Month | 57.3°F (14.1°C) | 57.7°F (14.3°C) | -0.4°F | 33rd Coolest | Coolest since: | 1917 |
| 98th Warmest | Warmest since: | 2015 | ||||
| Mar– 10-Month | 55.5°F (13.1°C) | 55.9°F (13.3°C) | -0.4°F | 32nd Coolest | Coolest since: | 1917 |
| 99th Warmest | Warmest since: | 2011 | ||||
| Feb– 11-Month | 53.0°F (11.7°C) | 53.6°F (12.0°C) | -0.6°F | 29th Coolest | Coolest since: | 1904 |
| 102nd Warmest | Warmest since: | 2012, 2024 | ||||
| Jan– 12-Month | 50.4°F (10.2°C) | 51.5°F (10.8°C) | -1.1°F | 17th Coolest | Coolest since: | 1904 |
| 114th Warmest | Warmest since: | 2012 | ||||
| Jul 1919– 18-Month | 52.3°F (11.3°C) | 53.2°F (11.8°C) | -0.9°F | 11th Coolest | Coolest since: | 1904 |
| 119th Warmest | Warmest since: | 2012 | ||||
| Jan 1919– 24-Month | 51.3°F (10.7°C) | 51.5°F (10.8°C) | -0.2°F | 39th Coolest | Coolest since: | 1905 |
| 91st Warmest | Warmest since: | 2012, 2024 | ||||
| Jan 1918– 36-Month | 51.3°F (10.7°C) | 51.5°F (10.8°C) | -0.2°F | 41st Coolest | Coolest since: | 1905 |
| 88th Warmest | Warmest since: | 2012 | ||||
| Jan 1917– 48-Month | 50.7°F (10.4°C) | 51.5°F (10.8°C) | -0.8°F | 12th Coolest | Coolest since: | 1907 |
| 116th Warmest | Warmest since: | 2023, 2024 | ||||
| Jan 1916– 60-Month | 50.6°F (10.3°C) | 51.5°F (10.8°C) | -0.9°F | 9th Coolest | Coolest since: | 1907 |
| 118th Warmest | Warmest since: | 2024 | ||||
| Ties: 1904 | ||||||
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
