A foggy morning over the District, Jan. 4, 2017. ( chasingmailboxes via Flickr )

TODAY’S DAILY DIGIT
A somewhat subjective rating of the day’s weather, on a scale of 0 to 10.

4/10: Cold today, light snow tonight. Not enough for play, but maybe a coating of white.

EXPRESS FORECAST

Today: Clouding up early, possible flurries during the afternoon. Highs: 35-39
Tonight: Light snow likely, accumulations mainly one inch or less. Lows: 25-30
Tomorrow: Partial clearing, light winds. Highs: 33-39

View the current weather conditions at The Washington Post headquarters.

FORECAST IN DETAIL

At last, tonight offers a real chance for some snow.  A coating of white is very likely but more than an inch will be tough to pull off as our moisture supply is limited. As for Saturday snow chances, models are in reasonable agreement that the storm is most likely to track too far to our south. The storm could still brush the Delmarva beaches with a little snow, but the main band looks focused on North Carolina. Arctic air digs in its heels over the weekend with readings struggling to get above freezing.

Today (Thursday): Only the earliest risers may catch a glimpse of the sun as clouds quickly stream across the region. The snow band out in the Midwest could (30 percent chance) begin to spin off some patches of light snow or flurries as the afternoon wears on. Scattered areas of light snow may (40 percent chance) coincide with the evening commute and a few slick spots are possible, but road temperatures a hair above freezing should prevent a widespread ice-up. Breezes are light from the west. Day time high temperatures reach the mid-to-upper 30s but cool quickly to the low 30s in any snow that develops. Confidence: Medium-High

Tonight: Patchy light snow and flurries are likely through the evening with the best potential for  more steady snow around or just after midnight. The snow should taper off by 4 or 5 a.m. Accumulations in most areas range from a dusting to an inch, but a spot or two could make it up to two inches or since this should be a fluffy snow. The highest totals are likely to be north and northwest of the District where temperatures are coldest. Overnight lows are mainly in the mid-to-upper 20s. Confidence: Medium-High

Follow us on Facebook, Twitter, and Instagram for the latest updates. For related traffic news, check out Dr. Gridlock. Keep reading for the forecast through the weekend…

Tomorrow (Friday): There’s an outside chance of some lingering flurries around dawn, but the snow should have ended over most of the region. Sunshine should start to break through midday but outright clearing is unlikely. Highs are stuck in the mid-to-upper 30s. Winds are light preventing any blowing snow. Confidence: Medium-High

Tomorrow night: Clouds diminish overnight with nearly calm winds leading to very cold readings. Lows bottom out mainly in the teens with lower 20s still likely to hold downtown. Confidence: High

A LOOK AHEAD

Saturday clouds back up early but unless a major shift occurs with the track of the storm to our south, the snow band focuses on southern Virginia, North Carolina and the southern Delmarva. Partial clearing may occur by late in the day. Highs, if you can call them that, are in the upper 20s to lower 30s. Another cold night is on tap as skies clear and gusty winds make it feel even worse. Lows fall to the teens across the region. Confidence: Medium

Sunny skies dominate Sunday from start to end but highs are again only in the upper 20s to lower 30s and brisk breezes are likely to make it feel even colder. The evening calms but lows in the teens are still painful. Confidence: Medium-High

Monday starts out sunny but skies may cloud up later in the day. Highs still struggle to reach the low-to-mid 30s. Confidence: Medium

SNOW POTENTIAL INDEX
A daily assessment of the potential for at least 1 inch of snow in the next week, on a 0-10 scale.

6/10 (↑): Snow tonight is likely. Getting an inch is a struggle, but doable within metro region. Saturday snow opportunity is fading.