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Washington DC weather for July 13: clouds and sun with a thunderstorm

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Brian's exclusive forecast for Washington DC:

Today: Warm and humid with a chance of an afternoon thunderstorm. The high will be in the mid to upper 80s. South wind around 10 except gusty in storms.

Tonight: A chance of a thunderstorm, otherwise mostly cloudy. The low will be around 70.

Monday: Warm and humid with a chance of afternoon thunderstorms. The high will be in the mid to upper 80s.

The extended forecast calls for widespread thunderstorms on Tuesday with a low around 70 and a high in the mid 80s. Clouds giving way to sunshine on Wednesday with a low in the upper 60s and a high in the upper 70s. Mostly sunny on Thursday with a low in the upper 50s to lower 60s and a high in the upper 70s. Clouds and sun on Friday with a low in the upper 50s to lower 60s and a high in the lower 80s.

Weather Summary

High pressure over the northeast United States will provide a warm, southerly flow over the Mid-Atlantic states today. The high will keep the area mostly sunny this morning but a warm front will move from south to north across the area, producing a few clouds and isolated thundershowers this afternoon. Moving into next week, warm and humid conditions are expected on Monday and Tuesday followed by a strong cold front that will produce widespread thunderstorms on Tuesday afternoon and evening. Cooler and less humid air will overspread the Middle Atlantic states by the middle of the week with highs only in the upper 70s in Baltimore and Washington by Thursday.

Regional Weather Information

Baltimore average lows and highs

Washington average lows and highs

National Weather Service daily weather discussion

Baltimore/Washington National Weather Service

Chesapeake Bay marine forecast

Mid-Atlantic radar loop

For more weather updates, please visit my web site www.chesapeakebayweather.com, my Chesapeake Bay Weather page on Facebook, and if you're heading to Ocean City feel free to check out my Ocean City MD Weather page on Facebook. You can also follow me on Twitter @chesbayweather.

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