Freeze watch issued for northwest Pa. Tuesday; lows near 30°F
National Weather Service warns of sub-freezing temperatures between midnight and 8 a.m. Tuesday for five northwest Pennsylvania counties.
A freeze watch was issued by the National Weather Service on Sunday at 1:20 p.m. valid for Tuesday between midnight and 8 a.m. for Mercer, Venango, Forest, Clarion and Jefferson counties.
The weather service informs, "Sub-freezing temperatures as low as 30 degrees possible."