The National Weather Service has issued a wind chill advisory for much of the greater Washington region, including Arlington County, saying that "dangerously cold" wind chills are expected Monday night and Tuesday morning.
The temperature on Monday is expected to drop to around freezing by 5 p.m. Monday night's low is forecast to be around 8 degrees, with wind chill values as low as -11, according to the National Weather Service.
Arlington could also see sustained winds of up to 30 mph with gusts up to 45 mph.
Tuesday will be sunny with a high near 17, according to the forecast, though the windchill could dip to -12. The wind should taper off slightly, with sustained winds up to 20 mph and gusts up to 35 mph, according to the weather service.
A wind chill advisory means that the combination of extremely cold air and strong winds could combine to cause frostbite and hypothermia.
The weather service recommends wearing a hat and gloves if you have to go outside tonight.
Because of the weather, Arlington County announced its emergency winter shelter in the Courthouse area would be open all day Monday and Tuesday.
This article was updated at 4:17 p.m. Monday with the latest forecast from the National Weather Service.