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Posted at 05:00 AM ET, 12/28/2012

D.C. area forecast: Calm Friday; Light snow, mix and rain likely on Saturday

EXPRESS FORECAST

Today: Partly sunny. Clouds increasing late. 37-42. | Tonight: Increasing clouds, light snow/mix possible late. Upper 20s to around 32. | Tomorrow: Morning light snow or mix. Changing to mix/rain before ending? 33-39. | Sunday: Mostly sunny. Mid-30s to near 40. | A Look Ahead | Get Express Forecast by E-mail

TODAY'S DAILY DIGIT

A somewhat subjective rating of the day’s weather, on a scale of 0 to 10


Fairly calm even if chilly. About as it should be for late December. +1 for Friday! Get the Digit on Twitter | Discuss on Facebook

SNOW POTENTIAL INDEX

A daily assessment of the potential for *accumulating* snow for the next week on a 0-10 scale. More info


SPI: 6 (↑) - A marginal setup for Saturday snow. But some accumulation seems likely in our area, especially N & W of DC. Get the SPI on Twitter | Discuss on Facebook

FORECAST IN DETAIL


We have a chilly but relatively seasonably cold period of temperatures ahead. And yes, some snow is possible for our winter weather lovers. Luckily, it’s not looking too disruptive or treacherous for traveling, but some slick spots particularly north and west of the city seem to be on the table. After that, we do get some sunshine to accompany our cold air mass. Is that some solace?

Today (Friday): Sunshine should prevail for most of the morning, but thinner, high clouds could veil sunshine more and more as the day progresses. Yes those clouds are our probable snow and wintry mix maker on its way. High temperatures remain chilly -- mainly in the upper 30s to low 40s. That’s about the best we can do, so keep a scarf handy, as we’ll also have northwest winds blowing 5-10 mph with higher gusts. Confidence: Medium-High

Tonight: Skies cloud over fairly quickly and substantially. After about 2 a.m., a few flurries and snow showers are possible (40% chance) for folks south of D.C. Steadier, potentially accumulating precipitation should wait until closet to daybreak. Low temperatures may make it to around 30 downtown, with mid-or-upper 20s outside the beltway. Confidence: Medium

For related traffic news, check out Dr. Gridlock. Keep reading for the forecast through the weekend...

Tomorrow (Saturday): Precipitation is a good bet (90% odds) as we start the day, and there’s a decent chance many start off as snow. Fewer questions remain for folks north and west of the city, where there is a greater chance precip stays mostly snow. Around the beltway, and along I-95, we may not stay around the freezing mark for long, so it’s possible a change to wintry mix or rain washes away any snow that might stick early. South and east of D.C. should have less snow, perhaps even none depending on your location, as temperatures remain a bit warmer. We will continue to watch the storm track, but keep in mind the system is not that strong, so the highest potential for all-snow accumulation (barring a changeover to rain) isn’t super high. Nothing really heavy, more scenic in nature. Still, I’d advise to drive extra carefully if you must be out.

High temperatures should make it into mid-and-upper 30s for many of us in the piedmont and tidewater areas. Perhaps low-and-mid 30s along I-81 could be the maximum. Precipitation winds down by late afternoon Confidence: Low-Medium

Tomorrow night: Slowly, skies should clear and that may allow temperatures to fall into the mid-to-upper 20s. Please watch for icy spots on the roads and sidewalks. A few additional snow showers (20% chance) or flurries can’t be ruled out before midnight but no additional measurable precipitation is expected. Light but noticeable winds out of the northwest will keep you wearing gloves and a scarf. Confidence: Low-Medium

Sunday: We’re looking fairly sunny after some possible morning clouds. That means any snow on the ground, especially in non-shaded spots, is likely to undergo melting. High temperatures stay chilly, though, probably only making the mid-30s to near 40. Confidence: Medium

A LOOK AHEAD

Sunday night is a cold one. We aren’t quite used to low temperatures falling quickly through the 30s, into the 20s by sunrise, for the entire region. Brrrrr. It is, however, fairly close to normal by now. Be safely dressed in many layers (long underwear?) if heading out late, or attending the game. Coldest outlying areas could even hit the high teens? Confidence: Medium

New Year’s Eve (Monday) may be chilly, but at least we’ll have some sunshine while running out for those last minute party supplies. High temperatures remain just a bit below average, around 40, to low 40s. But temperatures quickly dive toward or below the freezing mark by midnight. Stay warm! Confidence: Low-Medium

New Year’s Day (Tuesday) could be fairly calm and somewhat dreary… which might match how you feel after the night before!? More clouds than sun keep us chilly, probably in the upper 30s to low 40s. Bundle up since there won’t be much sunshine to warm you! Confidence: Low-Medium

By  |  05:00 AM ET, 12/28/2012

Categories:  Forecasts

 
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