Proper flag flying etiquette in the United States includes flying in approved lighting and weather conditions, flying at the specified height and being raised and lowered properly. Flags may be flown at half-staff under certain circumstances.
The flag of the United States can be flown from sunrise to sunset. If the flag is properly illuminated, it may be flown after dark. Only all-weather flags, made of nylon or non-absorbent materials, may be flown during rain or inclement weather. Fabric flags should be lowered and brought indoors in bad weather.
The American flag is flown above any state or community flags. It is to be flown at the top of the flagpole, or as the highest flag in a set of flagpoles. When the flag is flown with flags from other nations, all flags are to be at the same height. The flag may never be lowered, or dipped, in deference to anyone or anything.
The United States flag is to be raised and lowered briskly and ceremoniously. At no point should the flag ever touch the ground. The flag should be saluted as it is raised or lowered. When flags of many nations are raised and lowered, the action should occur simultaneously so that no flag is ever higher or lower than any other.
Only the U.S. president or the governor of a state may declare that flags be flown at half-staff. The flag is to be raised to the top of the pole momentarily, then lowered to half-staff. It should be raised again to full mast, then lowered down to be removed.