If 80 were to be the 24 hour low for today at RDU and GSO, it would tie the all-time high record low for any date for both locations. It would also obliterate the previous high June low for GSO of 77.
However, any thunderstorms today or this evening should easily get it below 80, even if they’re only in the general vicinity and not right at these locations. Also, per RDU:
THE ALL-TIME RDU RECORD WARMEST OVERNIGHT LOW IS 80 DEGREES, AND THERE IS SOME MODEL GUIDANCE THAT IS SUGGESTING TEMPERATURES MAY REMAIN ABOVE THE MARK OVERNIGHT. HOWEVER, EVEN IF
TEMPERATURES DO REMAIN THAT WARM OVERNIGHT, THE CURRENT FORECAST
DOES PREDICT THAT TEMPERATURES WEDNESDAY EVENING WOULD LIKELY FALL
BELOW 80 BEFORE MIDNIGHT. EXPECT WIDESPREAD LOWS ONCE AGAIN IN THE
70S.uu