DC-area forecast: Cold and calm today, then wet tomorrow before the Arctic hits


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

6/10: High 40s, but cool, you say? Stay tuned for what’s to come.

  • Today: Mostly sunny and cool, light winds. Highs: Low to mid 40s.
  • Tonight: Increasing clouds, late winter? Lows: Upper 20s to 30s.
  • Tomorrow: Mix north and west initially? Rain, sometimes heavy rain. Highs: 40s.

Today is the day to prepare for the bitter cold and wind that arrives Friday and lasts through the weekend, and tomorrow looks especially rainy. Not warm today, only highs in the 40s, but not terrible, mostly sunny and light winds. Our northern and western suburbs could see a wintry mix before turning to rain early tomorrow morning, then early Friday morning when an arctic front arrives, sending us into a deep freeze for Christmas Eve and Christmas Day.

Today (Wednesday): Another cold spell this morning with lows in the 20s to near 30s. Plenty of sunshine doing what it can, with afternoon highs in the mid-40s and light winds. Confidence: High

Tonight: Clouds are increasing this evening and then skies will be mostly cloudy overnight as low pressure develops to our south. Light showers or a wintry mix could move into our southern and western suburbs by 4am. Lows will be in the 20s to mid 30s overnight. Confidence: Medium High

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Tomorrow (Thursday): A brief period of wintry mix is ​​possible, mainly north and west of DC, by 9 a.m. or earlier, but any significant icing concerns should be limited to areas north of Frederick and west of Leesburg. For the metro area, it will turn out to be a rainy day, with rain increasing in the morning and heavier at times in the afternoon to evening. Afternoon temperatures will climb well into the 40s with winds from the southeast late into the evening. Confidence: Medium

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Tomorrow night: Rain will move from west to east in the evenings, but skies will remain cloudy overnight. Temperatures in the mid-40s and mid-50s thanks to relatively light winds. Confidence: Medium

Heavy rain is coming soon Friday, from approximately 6 a.m. to noon, ending with snow showers. While we can’t rule out a light coating on the grass, especially north and west of DC, the main story is crashing temperatures and strong winds. Most of us start the day in the 40s, but by lunchtime we’ll be in the 20s to 30s, and in the 20s with clear skies through the afternoon or evening. Winds from the west, generally in the 30-40 mph range with some gusts as high as 50 mph possible, should dry things out nicely. But the remaining wet spots will almost certainly freeze (so-called “flash freeze”) in the late afternoon to early evening. Confidence: Medium

Friday night Sustained winds around 30 mph with mostly clear skies. Overnight lows will drop into the upper single digits into the mid-teens, with wind chills dropping into the single digits to minus-5 degrees. Confidence: Medium High

Christmas weekend Partly mostly sunny and partly cool. Both days will struggle from single digits to the teens in the morning, with highs in the 20s to 30s in the afternoon. Winds Saturday will be out of the west at 20-30 mph, keeping wind chills in the single digits throughout the day. is long. Not as windy as Sunday, but windy enough to keep wind chills from pushing the low 20s past the mid-teens. Confidence: Medium-High

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High temperatures should return to the 30s to near 40s Monday and Tuesday.

On a scale of 0-10, a daily estimate of the likelihood of at least 1 inch of snow over the next week.

1/10 (): As an Arctic front breaks through early Friday morning, the rain will turn to sleet before the showers end. We don’t usually see accumulation in situations like this, but we can’t rule out a light coating on the grass, especially in the north and west of DC.

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