**Wind Chill Advisory until 6AM tomorrow morning**
Could tonight end up being the coldest night of 2018? Downtown Washington barely reached 20 degrees Saturday, with most of us only topping out in the teens. The environment tonight will be favorable for some record-challenging low temperatures. Clear skies and calming winds will allow temperatures to plummet into the single digits and even below zero in outlying spots, marking what should be the “culmination” of our weeks-long cold spell.
Through tonight: Record-breaking cold temperatures are likely in some locations. Temperatures will fall off steadily after sunset as wind gusts from the northwest dissipate. Northwest winds will continue to die off overnight (5 to 10 mph), going nearly calm in some spots. Where the winds do go calm is where we expect the temperatures to fall off the most. Combine that with clear skies, and low temperatures will be right around zero outside of the city and in the single digits downtown. Additionally, it will be quite dry overnight, with dew points well below zero.
View the current weather conditions at The Washington Post.
Tomorrow (Sunday): We’ll have an extremely cold start to the day as everyone at least be in the single digits if not colder. The good news is that we start to see a moderation trend in temperatures Sunday. Aided by a developing south wind (5 to 10 mph), afternoon temperatures will rise into the upper 20s under mostly sunny skies. Clouds will move into the area Sunday night with low temperatures in the teens.
Sweet relief, temporarily:
On Friday, Jason started the celebration train in advance of a serious warm-up by the end of next week. I am here to keep the planned party going, as well as to provide a bitter sweet taste of reality. Yes, we will love the upward trend in temps next week. Heck, I may even break out my shorts! But let’s remember that it’s still midwinter and we are in an active La Niña pattern, which traditionally trends toward colder winter temperatures for the eastern United States. And based on some longer-range climate guidance that came out Friday, all indications are that we will be returning to a cold and active winter pattern by February.
New ECMWF seasonal guidance indicates that the mid-winter warmup could be short-lived, particularly in the central U.S. ➡️ looks like Feb could be an active month for winter storms.
— Ben Noll (@BenNollWeather) January 5, 2018
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