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Consistently Cool, Clouds A'Coming

Jason Samenow @ 8:30 AM

After a brief appearance this morning, the sun will largely be in hiding for the next several days as somewhat dreary weather settles into the region. Until Sunday, cloudy and cool conditions are likely to remain with us with a bit of rain possible late Friday into Saturday.


Forecast Confidence: HighPartly sunny morning, increasing PM clouds. Chilly. Cold high pressure centered over the region will allow some sunshine to start the day, but high clouds carried by the jet stream will gradually increase throughout the day. The clouds coupled with the cold airmass will hold high temperatures between 45 and 50. Clouds remain over the area overnight, with low temperatures from 32-36 (suburbs-city).


Forecast Confidence: Medium-HighCloudy and cold. Light rain overnight? As a clipper approaches the region, we'll have plenty of cloud cover and temperatures will remain well below average. High temperatures should once again range from 45 to 50 with just a slight chance of some scattered light rain towards dark. Overnight, as the clipper passes just to our north and is drawn into a developing coastal storm, a backdoor cold front will form accompanied by some light rain (60% chance) -- especially in the northern suburbs. The rain may even mix with snow well north of DC (i.e. towards the PA border). Low temperatures should range from the mid to upper 30s.

Pictured: The NAM forecast model radar simulation for Friday night (Saturday at 1am) shows a patch of precipitation skirting DC and filling into the north. The precipitation may be in the form of snow over interior PA with flakes mixing in as far south as northern Maryland. There is still some uncertainty about the track of the clipper and the position of the backdoor front. Slight changes in these features will affect where the precipitation falls and its type.

The Weekend

Forecast Confidence: MediumCold and damp Saturday, becoming sunny Sunday. The backdoor cold front will slowly drift southeastward and through the area Saturday, with overcast skies and scattered light rain (50% chance). High temperatures may only reach the mid 40s. Sunshine returns Sunday, with high temperatures reaching the mid 50s.

A Look Ahead to Next Week

  • A warm-up is likely next Monday and Tuesday, with temperatures in the 60s
  • Next chance of rain is likely in the Wednesday-Thursday timeframe. One model (the Euro) advertises a potent East Coast storm, with some snow possible in the mountains and interior Northeast
  • Unseasonably cold air may return by late next week or next weekend

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