Americans celebrating the nation's Independence Day Wednesday are facing more extreme heat, continued power outages from Friday's violent storms in the east and a threat of more fires in the country's dry west.
Tens of millions of people are lining parade routes and attending picnics, concerts and family gatherings to mark the 4th of July holiday. But with more than one million people still without power, many Americans are in a less than celebratory mood.
In a number of communities across the country, the record heat, storm aftermath and threat of wildfires have forced officials to cancel festivities, including planned fireworks displays. And many residents were being advised not to set off their own fireworks because of the risk of fire.
This year, the 4th of July marks the 236th anniversary of the country's declaration of independence from Britain.
Across the country, the American flag and its colors of red, white and blue will be displayed and worn proudly as a symbol of the nation's freedom.
In Washington, home to one of the biggest U.S. Independence Day celebrations, hundreds of thousands of spectators will don their red, white and blue and pack the National Mall for a nationally-televised concert and a huge fireworks display. But a chance of showers and thunderstorms could put a damper on the celebrations.
U.S. President Barack Obama is hosting the White House's fourth annual salute to the military, with a barbecue, games and a concert by the presidential Marine Band. Wednesday also marks the 14th birthday of Mr. Obama's daughter Malia.
Fireworks also will light the night skies over hallowed battlefields from the War of 1812 and America's 19th century Civil War. Similar festivities are slated for Philadelphia — the nation's first capital — Annapolis, Maryland and New York City.
Drafted by Thomas Jefferson in June 1776, the Declaration of Independence is America's most cherished symbol of freedom. The Continental Congress formally approved the document weeks later, on July 4.
Last week's band of violent storms known as a derecho killed at least 24 people throughout the midwestern and eastern U.S. and prompted President Obama to declare West Virginia and Ohio as federal disaster areas. Utility crews are scrambling across the region to restore power and give residents a relief from temperatures that have soared above 40 degrees (Celsius).
Meanwhile, residents in many parts of the western U.S. are still trying to cope with massive wildfires that have destroyed hundreds of homes and forced tens of thousands of residents to flee.