Wednesday, May 21, 2025. Allentown, PA - Weather Forecast

Allentown, Pennsylvania Weather:

Wednesday, May 21, 2025

Day 72°

Night 48°

Precipitation 70 %

Wind 15 mph

UV Index (0 - 11+) 3

Weather Forecast History

Last Year's Weather on This Day (May 21, 2024)

Day

84°

Night

59°