A warm Friday in the mid-60s across the Lehigh Valley will transition to scattered evening showers and a cold front that will usher in significantly cooler temperatures by the end of the weekend.

Residents can expect rain late Friday evening, with potential rainfall totals up to a quarter-inch.

The National Weather Service forecast includes an elevated risk for fire spread Friday across a region that includes eastern Pennsylvania. This is due to low relative humidity and dry southerly winds of 10-15 mph gusting to 20-30 mph.

A stray shower is possible northwest of the Lehigh Valley late Friday afternoon, ahead of the more substantial rainfall expected overnight as the cold front moves through the region.

Saturday will bring weak high pressure and some sunshine, with temperatures potentially reaching near 70 degrees. However, Sunday will see increasing clouds and intermittent rain, with temperatures remaining mild in the 60s before a sharp temperature drop Sunday night.

A significant cooling trend begins Monday, with high temperatures dropping from the 60s to around 50 degrees. Overnight temperatures will fall below freezing, with potential scattered morning showers or flurries, particularly in higher elevation areas. Winds are expected to become gusty, with potential gusts up to 30 mph.

The extended forecast suggests a quick return to more moderate conditions by Wednesday and Thursday, with temperatures rebounding to the 50s and overnight lows remaining above freezing. No significant precipitation is anticipated during this period.

Follow your local forecast from AccuWeather at lehighvalleylive.com/weather with National Weather Service watches, warnings and other advisories available as they’re issued at lehighvalleylive.com/weather-alerts.

Current weather radar

Generative AI was used to draft segments of this report, which was reviewed and edited bylehighvalleylive.comstaff.

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