The forecast for President Donald Trump's Fourth of July extravaganza in the nation's capital will be rainy and hot.

Trump tweeted Wednesday that his "July 4th Salute to America at the Lincoln Memorial is looking to be really big."

"It will be the show of a lifetime," he added.

In a separate tweet, the president said two companies donated fireworks for "the biggest fireworks show Washington, D.C. has ever seen." Additionally, the president is scheduled for a televised address. However, the evening forecast could put a damper on "the greatest 4th of July celebration in a Nation's history."

The National Weather Service is calling for fog and clouds during the day with a heat index of 100 degrees. There is a 50% chance of rain with thunderstorms possible in the afternoon. Chances of precipitation increase Thursday evening, with a 70% chance of "numerous" thunderstorms with clouds and some wind.

While there is usually a Smithsonian-sponsored event and a concert broadcast on PBS on the Fourth of July, Trump announced new plans for this year's celebration, including flyovers and tanks, which he said in a tweet that the "Pentagon & our great Military Leaders are thrilled to be doing." The military will be the focus of the celebrations, with a showcase of a variety of weaponry and tanks.

The U.S. Department of the Interior said in a press release that the "Salute to America" celebration will take place on the National Mall and will honor each of the country's five service branches with music, military demonstrations, multiple flyovers and a flight demonstration.

The events will begin at 11:45 a.m. with marching bands, balloons and drill teams. At 6:30 p.m. Trump will honor "America's armed forces with music, military demonstrations, flyovers and much more." A concert on the west lawn of the U.S. Capitol building will begin at 8 p.m. with fireworks kicking off about an hour later.

Two people familiar with the situation told The Washington Post that the National Park Service is diverting almost $2.5 million in entrance and recreation fees intended to improve parks to cover the costs associated with Trump's Independence Day celebrations.

