Winter storm watch for St Mary’s County tonight into late Saturday *

TODAY’S DAILY DIGIT
A somewhat subjective rating of the day’s weather, on a scale of zero to 10.

5/10: Breezes may increase a bit. Some sun, but plenty of clouds. Wind chills in the 20s . . . Brr!

EXPRESS FORECAST

Today: Very breezy. Partly to mostly cloudy. Highs: 32 to 38.
Tonight: Thickening clouds. Snow by dawn? Lows: Teens to mid-20s.
Tomorrow: Mainly cloudy. Chance of snow. Highs: Upper 20s to low 30s.
Sunday: Sunny, gusty. Highs: Mid- to upper 20s.

FORECAST IN DETAIL

Snow may not be done with us yet! Stay tuned for perhaps a bit more tomorrow. While the focus still looks to be to our south and east, the heavier stuff has gotten closer on some models, which makes it worth eyeing hard. No matter what, prepare to use all the warm winter gear. Temperatures and wind-chill readings are heading down from here. Perhaps we can thaw again by early next week?

Today (Friday): Bundle up. Despite skies that are a mix of sun and clouds, 10 to 15 mph northwest winds gusting to around 20 mph add an extra chill. Wind-chill readings likely stay in the 20s all day, with our temperatures maxing out mostly in the mid-30s (a range from near freezing to about 38). A little bit of blowing snow isn’t out of the question, if your area received over a coating or a bit more last night. Confidence: Medium-high

Tonight: Clouds increase and thicken overnight. North-northwesterly breezes continue to be moderate, around 10 to 15 mph. Low temperatures are cold and vary a bit across the region. Upper teens are likely well away from the Beltway, with mid-20s more likely downtown. A chance of snow showers after midnight becomes a likelihood of some light snow by dawn. Confidence: Medium

For related traffic news, check out Dr. Gridlock. Keep reading for the forecast into next week.

Tomorrow (Saturday): Periodic light snow is a risk across the area through the morning and probably at least into midday. We may perhaps end with some breaks in the clouds before sunset. A storm to our south will give southern Maryland and points south and east a hefty event, but it trails off fairly quickly north and west of there. It’s possible that around the city and to the north and west will see only a dusting to a coating, or nothing. However, small shifts can cause big changes in expected snowfall, so it’s worth keeping an eye on this one. High temperatures remain cold either way, in the upper 20s to low 30s. A north breeze around 10 to 20 mph is also around. Use all the layers! Confidence: Low-medium

Tomorrow night: We should see clearing skies and cold temperatures. Just a light chance of snow lingering into the evening for now, and that would be under the snowier scenarios. Northwesterly winds may remain moderately high in the 10 to 20 mph range. Low temperatures may even fall to 20 degrees downtown! Teens are probable for the rest of the region. Confidence: Medium-high

A LOOK AHEAD

Sunday: A return of abundant sunshine is the positive; strong cold winds are the negative. If winds do indeed blow near 20 mph out of the northwest for most of the day, wind chills may stay in the single digits and teens. High temperatures are able to get into only the mid- to upper 20s in most spots, before any wind consideration. Prepare for the briskness! Confidence: Medium-high

Sunday night: Winds should slowly settle. Yet we are likely looking at crisp teens for low temperatures, regionwide. If you’re thinking of stargazing under mostly clear skies, use that thermal underwear for sure. Confidence: Medium

It’s looking like more sun than clouds for Monday, at least in the morning, as it appears now. Southerly breezes could add just a bit of wind chill to high temperatures around 30 to perhaps mid-30s if we stay fully sunny. Confidence: Low-Medium

Clouds may hang tough for most or all of Tuesday. At least high temperatures in the “warmer” upper 30s to low 40s appear possible, despite clouds. Although without sun, it may not feel like much of a thaw. At least breezes generally indicate they’ll stay under control. Confidence: Low-medium

SNOW POTENTIAL INDEX
A daily assessment of the potential for at least 1 inch of snow in the next week, on a 0-10 scale.

4/10 (↓): Another snow threat on Saturday. Main accumulation risk focused south and east, but worth watching closely.