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Washington DC weather for June 18: sunny, hot, and humid

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Brian's exclusive forecast for Washington DC:

Today: Hazy sunshine, hot and humid. A chance of an afternoon thunderstorm. The high will be in the lower 90s.

Tonight: Warm and humid with an evening thundershower possible. The low will be near 70.

Thursday: Considerable cloudiness with thunderstorms. The high will be in the upper 80s.

Thursday Night: Warm and humid with an evening thunderstorm possible. The low will be near 70.

Friday: Intervals of clouds and sunshine. A chance of thundershowers. The high will be in the mid 80s.

The extended forecast calls for clouds and sun on Saturday with a chance of thunderstorms. The low will be near 70 and the high will be in the mid 80s. Clouds and sun on Sunday with a chance of thunderstorms. The low will be near 70 and the high will be in the mid 80s. Clouds and sun on Monday with a chance of a thunderstorm. The low will be near 70 and the high will be in the mid 80s. Clouds and sun on Tuesday with a chance of a thunderstorm. The low will be near 70 and the high will be in the mid 80s.

Weather Summary

A clockwise flow of air around high pressure to our east will continue to bring a hot, humid flow of air into the Chesapeake Bay region from the south. Highs on Tuesday climbed into the lower 90s at most locations the Washington area under a mostly sunny sky. Temperatures today will reach the lower 90s again, with overnight lows only dropping to around 70 by Thursday morning. Meanwhile, a weak cold front will approach Baltimore and Washington from the west on Thursday afternoon and become stationary in the Middle Atlantic region over the weekend. This will result in considerable cloudiness along with a chance of thunderstorms beginning on Thursday and lasting through the weekend. There will be intervals of sunshine throughout this period, but there will be a chance of showers and storms each day. Temperatures will be a bit cooler with highs only in the mid 80s, but it will remain very humid.

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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