Lehigh Valley weather: Temperatures rising, rain expected Thursday night into Friday

by Advance Local Express Desk

A regional temperature forecast graphic from the National Weather Service is inset against a photo of partly cloudy skies over South Mountain on Saturday, March 21, 2026, at Wildlands Conservancy's Black River Sanctuary on the Salisbury-Upper Saucon Township border.

Temperatures are on the rise through mid-week, following a seasonably chilly but sunny Tuesday with highs around 50 and calm winds across the Lehigh Valley.

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