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Washington DC weather for July 22: hot and humid on Wednesday

Brian's exclusive forecast for Washington DC:

This evening: Mostly clear and warm with a low in the lower 70s.

Wednesday: Very warm and humid with a chance of an afternoon or evening thunderstorm. The high will be in the upper 80s to lower 90s.

Wednesday Night: A chance of thundershowers. The low will be in the lower to middle 70s.

Thursday: Occasional showers and thunderstorms. Very humid with a high in the mid to upper 80s.

The extended forecast calls for increasing sunshine and lower humidity on Friday with a low in the upper 60s and a high in the mid 80s. Mostly sunny on Saturday with a low in the mid 60s and a high in the mid 80s. Clouds and sun on Sunday with a low in the upper 60s and a high in the mid to upper 80s.

Weather Summary

A series of relatively mild days will transition to hot and humid conditions on Wednesday. With high pressure to our east, and a cold front approaching from the west, a very warm and humid flow of air is expected to overspread the region and increase thunderstorm chances from Wednesday afternoon through Thursday morning. Highs on Wednesday will reach the lower 90s. The front is expected to push eastward during the day on Thursday, with morning showers and thunderstorms giving way to partial clearing. High pressure will then build over the Middle Atlantic states on Friday and Saturday with seasonably warm temperatures and lower humidity.

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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