QUICK FORECAST: 

Tuesday: Mostly sunny and still very cold. High: 32.
Tuesday Night: Increasing high clouds. Breezy & not as cold. Low: 28.
Wednesday: Mostly cloudy with some late day showers and light rain. Most of the day in the 30s to low 40s. Evening High: 47.

FORECAST DISCUSSION:

Tuesday will be mostly sunny and still very cold with highs at or below freezing for *most* areas. A few spots may briefly climb just above freezing south of town.

The Arctic Freeze holds tight of the Mid-Atlantic and DC area for another day. Some areas could spend a consecutive 70 hours or more at or below freezing.

DC fell to the freezing mark at 5 PM Sunday, January 20th. With a forecast high of 32° Tuesday, we are not predicting DC to climb back above freezing until 10 AM Wednesday. This will be 65 consecutive hours. It's even longer for Frederick Leesburg, and many other cities northwest of town.

Hours At or Below Freezing (32°)
WUSA

Continue to dress warmly in layers, limiting the amount of exposed skin. Check on elderly neighbors. Give you pets a warm place to stay. And if you see anyone outside who is homeless, please call and help find them shelter. In DC, you can do this by calling 3-1-1. 

For your house, to prevent frozen pipes, open cabinet doors and leave a slow drop in the faucets. 

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Deep Freeze Safety
WUSA

Tuesday will be mostly sunny and still very cold with highs at or below freezing for *most* areas. A few spots may briefly climb just above freezing south of town.

Mid-week, the pattern changes. We'll track the next low pressure system and cold front in from the west. This will open the door for some milder temps and take everyone out of the deep freeze into the 40s. This warmup will also come with rain & showers.

Wednesday starts *mostly* dry, but scattered showers return for the afternoon. Rain & showers build in during the evening and overnight. The heaviest rain will fall Thursday morning, which will lead to a slow AM commute with ponding/standing water. The heaviest rain is over by mid-day with showers lingering for Thursday afternoon along with falling temps into the 30s. The rain showers may end with a few snow showers mixed in for communities far northwest of DC, including Frederick, Hagerstown, Martinsburg and the mountains. A slushy coating of accumulation would be the max, as most of the moisture is gone when temps fall cold enough to mix with snow.


DETAILED FORECAST:
Tuesday: Mostly sunny and still very cold. Highs: 29 - 35. Winds: NW/SE - 10.
Tuesday Night: Increasing high clouds. Breezy & not as cold. Lows: 24 - 32. Winds: S - 10.
Wednesday: Mostly cloudy with some late day showers and light rain. Most of the day in the 30s to low 40s. Highs: 44 - 49. Winds: S 10 - 15.
Thursday: Locally heavy rain in the morning. Turning colder late with more PM showers. Far NW it will end with a few snow showers or flurries. Temps falling from early morning highs of 45 - 55 down into the 30s for the afternoon.

EXTENDED FORECAST

The finish of the work week and start to the weekend looks cold but dry. Temps Friday and Saturday will stay in the 30s. There are signs of milder air returning by Sunday with highs back near average in the 40s.

Friday: Mostly sunny to partly cloudy and cold. Upslope mountain snow showers. Highs in the low to mid 30s.
Saturday: Mostly sunny to partly cloudy and cold. Morning lows in the 10s to low 20s. Highs in the mid 30s.
Sunday: Partly cloudy and not as cold. Highs in the low 40s.






RECAP: DC's Top Weather Events of 2018


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