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Posted at 05:00 AM ET, 01/29/2012

Forecast: Briefly cooler before more winter warmth

10:30 p.m. update: A gusty squall line with rain showers - pretty quickly mixing with and changing to snow showers will rapidly pass through (mainly) the northern and western half of metro region in next hour. Already reports of strong winds and a brief coating of snow from line have come in from central and western Loudoun county. This activity is currently racing through Montgomery and western Fairfax county (the southern extension is into western Prince William and central Fauquier counties).

While snow may briefly reduce visibilities, it won’t stick around with temperatures above freezing. The farther south and southeast of the District you go, the more the chance of seeing snow diminishes. Follow the Twitter feed below for latest updates.

Today's Daily Digit
 
A somewhat subjective rating of the
day's weather, on a scale of 0 to 10.

 
Not quite as nice as Saturday. But hard to complain about early sun and a run at 50 even with p.m. shower chance.
 
Get the 'Digit' on Twitter
EXPRESS FORECAST

Today: Increasing clouds. P.M. shower/snow shower? Upper 40s to low 50s. | Tonight: Shower/snow shower early? Upper 20s to low 30s. | Tomorrow: Partly to mostly sunny. Mid-to-upper 40s. | A Look Ahead | Get Express Forecast by E-mail

FORECAST IN DETAIL

I suppose we’re about due for a little bit of a cool down. And cool down we do over the next couple days, but not by all that much. Fear not though, warm-weather fans - warmth builds again toward midweek when highs head back to near or past 60. Precipitation chances are limited to a shower or snow shower later today or this evening, and a chance of showers Wednesday as a cold front approaches.

Snow Potential Index: 1 (→) - Possible late-week storm could end with flakes if cold air follows close behind. Accum not likely but at least something for snow lovers to cling to.
 
The SPI is a daily assessment of the potential for accumulating snow for the next week on a 0-10 scale. Get the 'SPI' on Twitter
 

Today (Sunday): We’re looking at mostly sunny skies early, but they’ll cloud up by or during the afternoon as a cold front approaches from the northwest. Breezes from the southwest pick up in the afternoon and keep highs above average, in the upper 40s to low 50s. The mountains do their best to dry any precipitation along the front, but an afternoon or evening shower (or snow shower north) could sneak in. Confidence: Medium-High

Tonight: We'll hold on to the chance of a shower or snow shower into the evening. Once the front passes later in the evening, skies clear and winds turn to come out of the west/northwest. Overnight lows drop back to the upper 20s to low 30s. Confidence: Medium-High

Keep reading for the forecast through midweek...

Tomorrow (Monday): We’re a touch cooler than today but still a bit above normal for this time of year. Plus, we’ll have partly to mostly sunny skies to boot. Highs should make the mid-to-upper 40s with light winds from the west. Confidence: High

Tomorrow night: An area of high pressure centered off the Southeast coast strengthens and begins to pump up some warmer air from the south. That helps keep temperatures from dipping too far, with lows in the 30s under partly cloudy skies. Confidence: Medium-High

A LOOK AHEAD

Tuesday we make up for a couple days of temperatures only a little above average with another one of those super-warm winter days we’ve grown used to this winter. Flow from the southwest continues to pump in the warmth as highs reach near or past 60 with plenty of sun. Skies turn partly cloudy Tuesday night with lows in the 40s. Confidence:Medium-High

Another cold front begins to move in Wednesday. That probably spells increasing clouds and maybe some showers. We should still be on the warm side of the front, so highs near or past 60 are within reach again. Confidence: Medium

By  |  05:00 AM ET, 01/29/2012

Categories:  Forecasts

 
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