From the ABC 7 Weather team

Washington D.C. Forecast: Troipcal weather pattern continues

July 2, 2013 - 10:35 PM
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Warm and humid conditions persist overnight with chances for scattered showers.

Tonight:
Isolated Showers
Lows: 70s
Wind: S 5-10 m.p.h.
Wednesday:
Partly Sunny, Isolated PM Storms
Highs: Mid 80s
Precipitation: 30%
Thursday:
Partly Cloudy, Warmer, Stray PM Storm
Highs: Upper 80s
Precipitation: 20%

Isolated showers remain in the forecast tonight and tomorrow but what about the all important 4th of July forecast?

The weather pattern is unchanged. High pressure over the Western Atlantic and low pressure over the Midwest are stationary, although the low may be slowly weakening. So, the local weather will remain the same until the high pressure slowly shifts westward toward the mid-Atlantic Coastline. This will make the high pressure ridge more dominant by weeks’ end and for through the weekend. But it will not end the threat of rain. And the movement of the ridge will cause warmer temperatures. So as the daily rain chances drop each day, the daily high temperatures will rise.

It will go from a very warm and humid pattern to a hot and humid pattern as the weekend approaches. As moisture continues to channel and surge northward from the Gulf and Tropical Atlantic more rain will be likely. You will know when the high pressure ridge has become dominant because skies with be sunnier and rain and thunderstorms will be restricted to late afternoon and evening hours. This change will occur on Thursday or Friday.

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