wpostServer: http://css.washingtonpost.com/wpost2

Most Read: Local

Posted at 05:00 AM ET, 02/21/2013

D.C. area forecast: Wintry cold today, perhaps a light wintry mix late tomorrow

EXPRESS FORECAST

Today: Mainly sunny, breezy. 40-44. | Tonight: Increasing clouds late. 24-30. | Tomorrow: Cloudy with light snow/sleet/rain mix possible late afternoon. 38-42. | 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


These temps are more typical of January and the wind chill makes it all the worse. 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: 3 (→) Friday’a system remains moisture-starved and only borderline cold enough for a few flakes. Get the SPI on Twitter | Discuss on Facebook

FORECAST IN DETAIL


Yet again we play the frozen precip tango. This dance gets underway late tomorrow and for northern suburbs it could whirl into the night. However, for the city and points south this is likely to be more like a brief tap dance. While slick spots are possible Friday, the system looks moisture-starved. The real precipitation arrives on Saturday, all or mostly rain, to wash the salt away.

Today (Thursday): The sun shines brightly today but just as yesterday the cold air and gusty winds overwhelm. It is a scarf and gloves kind of day. Winds of 15-25 mph make highs in the lower 40s feel more like lower 30s or even colder. Confidence: High

Tonight: The stars shine brightly until very late at night when clouds come creeping in. Winds abate but lows in the mid-to-upper 20s are still no picnic. Confidence: High

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

Tomorrow (Friday): What is left of the big snow storm in the Plains crosses our area today but it is but a ghost of its former self. Clouds can be counted on but they struggle to produce anything headed groundward until late afternoon. Part of the problem is our dry air will evaporate much of the initial attempts at precipitation. This helps cool the air enough that a brief snow, sleet, rain mix is likely (70%) but there just isn’t much moisture period. Highs only reach the upper 30s to lower 40s. Heading home requires extra caution but a significant event this is not. Confidence: Medium

Tomorrow night: The lack of moisture is likely to leave much of the area with no more than sprinkles through much of the night. Only at daybreak is it likely to start showering again (60% chance) and that should be all rain except for the far west and northern suburbs where a brief mix of freezing rain, sleet, and/or is possible. Lows hold in the low-to-mid 30s. Confidence: Low-Medium

A LOOK AHEAD

Saturday is a wet one as a storm coming up from the south does have moisture available and much of the area could see a half inch of rain or better (80% chance). The system brings plenty of warm air aloft into the region, making rain - rather than snow - a certainty. Cool air at the surface is harder to dislodge and highs only likely reach the low-to-mid 40s making for a raw day. Showers should finally taper off in the evening and skies will gradually clear overnight. Lows are no worse than mid-to-upper 30s. Confidence: Medium

Sunday is back to abundant sunshine but a brisk wind in the wake of the storm makes highs in the mid-to-upper 40s feel colder. It calms down by evening and overnight lows slip to upper 20s to lower 30s. Confidence: Medium-High

Monday starts out sunny but is likely to see increasing clouds later in the day. Highs should reach the upper 40s to lower 50s. The clouds may obscure the rising of the full moon in the evening, but since it is the “Snow Moon” perhaps that is appropriate! Confidence: Medium

By  |  05:00 AM ET, 02/21/2013

Categories:  Forecasts

 
Read what others are saying
     

    © 2011 The Washington Post Company