Today (Wednesday): Another chill out there as we start in the low 20s this morning and climb into the 30s. Plenty of sunshine makes its best, with light winds pushing afternoon highs into the low to upper 40s. Confidence: High
tonight: Clouds are increasing this evening, and then skies become mostly cloudy overnight, as low pressure builds to our south. Light rain or a cold mix could move into our southern and western suburbs by 4am. Overnight lows range from the upper 20s to mid-30s. Confidence: Medium-High
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Tomorrow (Thursday): A brief period of wintry mix is possible, especially north and west of DC, by 9 a.m. or earlier, but any significant snow concerns should be limited to north of Frederick and west of Leesburg. For the metro area, it turns into a rainy day, with rain coverage increasing during the morning and heavier at times in the afternoon into the evening. Afternoon temperatures should climb well into the 40s as winds shift from the southeast into the late evening. Confidence: Medium
yesterday night: Rain will move from west to east during the evening hours, but skies will remain cloudy overnight. Temperatures stay in the mid-40s to low 50s thanks to a relatively light breeze from the south. Confidence: Medium
Heavy rains begin soon. Friday, between about 6 a.m. and noon, likely ending as snow showers. A light coating on the grass can’t be ruled out, especially north and west of DC where the main story is crashing temperatures and strong winds. Most of us start the day in the 40s, but we’re in the 20s to 30s by lunchtime, and in the 20s with clear skies in the late afternoon or early evening. . Winds from the west, generally in the 30-40 mph range with a few gusts around 50 mph, should dry things out nicely. But any remaining wet spots are sure to freeze (what we call “flash freezes”) during the afternoon to evening. Confidence: Medium
Friday night Winds around 30 mph with mostly clear skies. Overnight low temperatures drop from the upper single digits to the midtens, with wind chills down to the single digits as low as -5 degrees. Confidence: Medium-High
Christmas weekend Partly mostly sunny and quite cool. Both days start in the morning low to upper single digits, before struggling to afternoon highs in the 20s to 30s. Saturday’s winds, 20-30 mph out of the west, will keep wind chills in the single digits and teens throughout the day. Not quite as windy as the long Sunday, but still enough to keep the wind chill from hovering in the low 20s as the breeze passes through the teens. Confidence: Medium
High temperatures should return to the 30s to 40s Monday and Tuesday.
Daily assessment of the chance of at least 1 inch of snow in the next week on a scale of 0-10.
1/10 (→): As the Arctic front blasts through early Friday, the rain showers may turn to snow showers before ending. We don’t usually see deposits under these conditions, but can’t rule out a light coating on the grass, especially north and west of DC.