A Frost Advisory is in effect for Arlington and surrounding areas overnight tonight.
The National Weather Service says near-freezing temperatures early Friday morning could harm sensitive plants that are left uncovered.
More from NWS:
…FROST ADVISORY IN EFFECT FROM 1 AM TO 9 AM EDT FRIDAY… THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON HAS ISSUED A FROST ADVISORY, WHICH IS IN EFFECT FROM 1 AM TO 9 AM EDT FRIDAY. * TEMPERATURES…IN THE MID 30S. * IMPACTS…FROST COULD HARM SENSITIVE OUTDOOR VEGETATION. PRECAUTIONARY/PREPAREDNESS ACTIONS… A FROST ADVISORY MEANS THAT WIDESPREAD FROST IS EXPECTED. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. TAKE STEPS NOW TO PROTECT TENDER PLANTS FROM THE COLD. &&
Frost and freeze conditions are expected across much of the area tonight. Lows will be in the 30s, except some lower 40s in the urban centers and near the bayshore. Protect any tender vegetation. pic.twitter.com/zHV3js68Cw
— NWS DC/Baltimore (@NWS_BaltWash) October 18, 2018