November in Allentown averages a daily high of 11.6°C with nights around 0.6°C. Expect roughly 8.6 wet days totalling 77.9mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Allentown is May–June.
Based on ALLENTOWN LEHIGH VALLEY INTERNATIONAL AIRPORT, PA US (5.8km), 1995–2024. 30 years of November data.