7:00 AM | *Colder pattern begins today and there are chances for snow*

6-Day DC Forecast

Today

Partly sunny, quite breezy, noticeably colder than yesterday, highs in the mid-to-upper 40’s

Tonight

Mainly cloudy, cold, lows in the lower 30’s

Thursday

Mainly sunny, cold, near 45 degrees for afternoon hours

Thursday Night

Becoming mainly cloudy, cold, lows near 30 degrees by morning

Friday

Mainly cloudy, cold, chance for snow or snow showers later in the day or at night, near 40 degrees

Saturday

Partly sunny, cold, near 40 degrees; chance for snow showers late at night...maybe even a heavier snow squall

Sunday

Mainly sunny, cold, mid-to-upper 30’s

Sunday

Mainly sunny, cold, low 40’s

Discussion

A major pattern change to cold begins today following the passage of a strong cold frontal system and temperatures this afternoon will be noticeably colder than yesterday’s mild conditions. This change to cold will be rather sustained with a good chance for below-normal temperatures on average from this point through most, if not all, of the month of December. This initial shot of cold air will feature an intensifying trough of low pressure in the eastern US with plenty of waves of energy rotating through and each system will attempt to generate low pressure near the east coast. As a result, the threat for some snow or snow shower activity will persist from later this week into the upcoming weekend. Signs point to an even colder air mass to arrive next week in the eastern US which will be way below-normal for this time of year and this blast may be accompanied by some snow.

Meteorologist Paul Dorian
Vencore, Inc.
vencoreweather.com