Temperatures are expected to fall throughout the day and drop below freezing tonight, prompting forecasters to issue a freeze warning.

The freeze warning is in effect for Arlington and the rest of the D.C. area until 9:00 tomorrow morning. Periods of rain and perhaps even a brief bout of snow is expected between now and then, as a cold front passes through the area.

From the National Weather Service:

… FREEZE WARNING REMAINS IN EFFECT FROM 3 AM TO 9 AM EDT WEDNESDAY…

* TEMPERATURES… LOWS AROUND 30 DEGREES.

* TIMING… OVERNIGHT TONIGHT INTO WEDNESDAY MORNING.

* IMPACTS… UNPROTECTED COLD-SENSITIVE VEGETATION WILL BE KILLED OR DAMAGED.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE EXPECTED. THESE CONDITIONS WILL KILL SENSITIVE CROPS AND OTHER VEGETATION. THIS IS EXCEPTIONALLY COLD AIR FOR THIS TIME OF YEAR. TAKE ACTION TO PROTECT ANY OF YOUR IMPORTANT SENSITIVE VEGETATION.