A parade and day of revelries slated to celebrate the U.S. Army's 250th birthday in Washington D.C. Saturday may be marred by nasty weather.

The National Weather Service issued a broad “marginal” risk for excessive rainfall on Saturday, the lowest level on its four-tier scale, for much of the eastern third of the country through the weekend. A slightly higher risk was forecast for parts of Kansas, Oklahoma and Virginia. .

WASHINGTON - The Army 250th birthday parade begins at 6:30 p.m. on Saturday, June 14. Here's how to watch live. FOX 5 DC will be covering the parade, fireworks and festival events all day on June 14. Watch for free on the FOX LOCAL app, available on your smart TV and phone.

Thousands of soldiers, military equipment and more are set for this weekend in Washington D.C. for the U.S. Army's 250th anniversary celebration.

The event will bring street closures, security checkpoints, hundreds of military vehicles and thousands of marching troops.

The federal government may spend as much as $45 million on the event, which falls on Trump's birthday but officially honors the U.S. Army's 250th birthday

Despite the parade, overall travel demand to Washington D.C. remains steady this weekend. Here's what travelers should know.

The conflict in Los Angeles now forms the backdrop for Saturday’s military parade on Trump’s birthday and a nationwide “No Kings” protest.