D.C. area forecast: Much colder today and even more so tomorrow; Tuesday snow?

March 23

Today’s Daily Digit

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

4
Quite cloudy and quite cool, maybe a few raindrops or snowflakes. A definite downer after yesterday.

Express Forecast

Today: Mostly cloudy and much cooler. A few rain or show showers possible. Highs: Mid-40s to near 50.

Tonight: Clearing skies and chilly. Lows: 20s.

Tomorrow: Sunny and cold. Highs: near 40 to low 40s.

FORECAST IN DETAIL

We just can’t seem to stretch these spring-like spurts into much more than a day or so. That trend continues this weekend as we follow Saturday’s partly sunny skies and highs near 70 with a much colder and cloudier Sunday. A few showers today may even mix in a few snowflakes just for fun. The chill sticks around through midweek, with the main forecast focus on if and how much it will snow on Tuesday into Tuesday night. Accumulation looks iffy but remains possible.


Radar & lightning: Latest regional radar shows movement of precipitation and lightning strikes over past two hours. Refresh page to update. Click here or on image to enlarge. Or see radar bigger on our Weather Wall.

Today (Sunday): We turn much cooler today in the wake of yesterday’s cold front. We’ll also be watching for a few scattered rain or snow showers courtesy a system passing by mainly to our south. Precipitation chances range from 30% in the northern suburbs, to around 40% inside the Beltway, and 50% in the southern suburbs. With mostly cloudy skies and and a cold breeze from the north near 10 mph, highs are stuck in the mid-40s to near 50, still warm enough keep any flakes from sticking.  Confidence: Medium-High

Tonight: That system to our south rapidly moves away and skies clear during the evening into the overnight. As high pressure builds in behind it, winds from the north at around 10-15 mph bring a reinforcing cold shot. If you got a little ambitious with your gardening yesterday, take any necessary precautions, as we’re headed for lows in the 20s area-wide. Confidence: High

Will we squeeze out one more snowstorm? Keep reading for the forecast through midweek…

Tomorrow (Monday): Even the strengthening March sun can’t do much to warm this cold air mass. Despite mostly sunny skies, highs struggle to reach near 40 to the low 40s. Morning winds still up in the 10-15 mph range from the northwest should begin to relax during the afternoon. Confidence: High

Snow Potential Index

A daily assessment of the potential for at least ~1″ of snow in the next week, on a 0-10 scale. More info

3 (→) Tuesday storm may be too far offshore and/or too warm for a big snow dump, though the track is not nailed down just yet.

Tomorrow night: Clouds are on the increase again as a weak system drops out of the Great Lakes and our eventual coastal storm begins to take shape well to the south. A few snow showers are possible toward morning, with overnight lows in the mid-20s to low 30s. Confidence: Medium-High

A LOOK AHEAD

Odds have increased that a coastal storm will track far enough offshore to spare the D.C. area from a major snowstorm Tuesday into Tuesday night, although that is *not* a lock just yet. At the very least, lagging upper-level energy should produce some scattered snow showers. These would probably be too light to accumulate on roads given the the strong sun and highs in the mid-30s to near 40, but could whiten the ground Tuesday night. We’ll be watching closely to see if today’s model runs trend the storm closer to the coast, which would lead to a snowier scenario. Chilly again Tuesday night with lows in the 20s. Confidence: Low-Medium

The forecast for Wednesday looks rather raw. Cold high pressure moves in and skies are bright, but we’re dealing with some rather energetic winds as the storm cranks up off the Northeast coast. Highs may not get past the upper 30s to low 40s, and gusty winds from the northwest add a bite to the chill. Confidence: Medium-High

Comments
Show Comments
Most Read Local
Next Story
Dan Stillman · March 22