The U.S. Capitol Police evacuated the west front of the Capitol on Thursday after reported lightning strikes near the National Mall ahead of President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE's "Salute to America" July 4 event.

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Weather was a concern in the Washington area throughout Thursday in the run-up to the Fourth of July festivities on the National Mall, with rain rolling through periodically and more forecast throughout the night.

Trump is scheduled to speak at 6:30 p.m. at the Lincoln Memorial, with the festivities to end with a fireworks display after 9 p.m.