D.C. area forecast: Plenty cold ahead of next bitter cold blast arriving late Monday

Originally posted at 5 a.m….

Today’s Daily Digit

A somewhat subjective rating of the day’s weather, on a scale of 1 to 10.

5
You know we’ve got a problem when a 2nd straight day with a shot at 30 degrees is reason to celebrate.

Express Forecast

Today: Increasing clouds, p.m. flurry? Highs: Mid-20s to near 30.

Tonight: Mostly cloudy, possible flurry. Temps mainly steady near 25-30.

Tomorrow: Chance of snow showers, increasing p.m. wind. Highs: 30s early, then falling into 20s.

FORECAST IN DETAIL

Any early sun may look nice, but doesn’t portend a warmer day. If anything, we’re a touch colder today than yesterday, yet mild compared to what’s to come. Yes that’s right, we’re heading back into the polar realm as an arctic front ushers in yet another blast of bitter cold Monday night into Wednesday. The core of the cold settles in for Tuesday and Tuesday night, when wind chills range from the single digits to negative teens across the area.

Temperature Map

Temperatures: Latest D.C. area temperature map. See interactive map on our Weather Wall.

Today (Sunday): Skies start partly sunny through around mid-morning, but become mostly cloudy thereafter as low pressure swings through the Great Lakes.  Winds around 10 mph from the southwest and south ahead of the system help keep temperatures on the “mild” side — relative to what we’ve seen before and what’s on the way again — with highs in the mid-20s to near 30.  I’ll mention the chance for a flurry or two during the afternoon. Confidence: Medium-High

Tonight: Temperatures stay fairly steady overnight, mainly around 25-30, thanks to those southerly winds and mostly cloudy skies. We’ll continue the chance of a flurry or two as well. Confidence: Medium-High

Another arctic blast on the way?  Keep reading for the forecast through midweek…

Tomorrow (Monday): Mostly cloudy skies may produce some snow showers or flurries as our next arctic front barrels through midday, perhaps dropping a dusting in spots. Temperatures peak in the 30s during the morning, before likely falling into the 20s during the afternoon as brisk winds kick up from the northwest. Confidence: Medium

Tomorrow night: Temperatures continue to crash behind the front.  Skies should begin to partially clear overnight as lows head into the single digits in the suburbs, maybe holding up in the teens downtown.  A sometimes gusty breeze from the northwest sends wind chill values into the negatives once again. Confidence: Medium-High

A LOOK AHEAD

Snow Potential Index

A daily assessment of the potential for at least ~1″ of snow in the next week, on a 0-10 scale.

2 (↓): Mainly snow showers or flurries through the week. Maybe something more next weekend but could be mixed precip.

Tuesday features plenty of sun, but arctic high pressure keeps temperatures from doing much of anything.  Winds continue to whip and highs are held to the mid-teens, with wind chills stuck in the single digits to near zero. I wouldn’t be shocked to see penguins along the Tidal Basin.  Under mostly clear skies, another frigid night is on tap with lows near zero to 10 above, and wind chills dipping toward or into the negative teens. Confidence: High

It’s a little warmer on Wednesday, but not by much. Afternoon highs may just crack into the 20s, with partly to mostly sunny skies and slackening winds. It’s been a while since we’ve kept a snowpack for a solid week, so I guess that’s a bit of consolation? Confidence: High

Also on Capital Weather Gang

Super Bowl forecast update: Light precip possible into Sunday morning, but no major worries for kickoff