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Washington DC weather for July 15: hot and humid with afternoon storms

Brian's exclusive forecast for Washington DC:

Tuesday: Warm and humid with numerous showers and thunderstorms, especially during the afternoon. The high will be in the upper 80s.

Tuesday Night: Showers and thunderstorms with a low in the upper 60s.

Wednesday: Morning clouds and showers possible, then becoming mostly sunny with a high in the lower 80s.

The extended forecast calls for mostly sunny conditions on Thursday with a low in the upper 50s to lower 60s and a high in the upper 70s to lower 80s. Clouds and sun on Friday with a low in the lower 60s and a high in the lower 80s. Clouds and sun on Saturday with a low in the mid 60s and a high in the mid 80s.

Weather Summary

A very warm, humid flow of air continues over the Middle Atlantic states today. This set-up is a classic "Bermuda High" that will keep the area hot and humid with highs in the upper 80s to lower 90s and heat index values in the mid to upper 90s. Meanwhile, a strong cold front will approach Baltimore and Washington from the west toward evening. This will produce yet another round of widespread thunderstorms on Tuesday afternoon and evening as cooler, drier air behind the front clashes with warm, humid air in place over central Maryland. Some thunderstorms may be severe with very heavy rain and strong winds. Cooler and less humid air will overspread the Middle Atlantic states by the middle of the week with highs only in the upper 70s to lower 80s 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, 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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