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Extreme Heat Warning in effect for Lehigh Valley through July 4

Dangerous heat and humidity will affect the Lehigh Valley from noon Wednesday through 8 p.m. Saturday, with heat index values reaching 105–110°F and the potential to tie or exceed all-time record highs.

Published Jul 1, 2026, 8:42 AM EDT | LehighValleyLive

An Extreme Heat Warning is in effect for the Lehigh Valley region from noon Wednesday through 8 p.m. Saturday, as dangerous heat and humidity build across the region.