Depending on the species and time of year, snakes can be both nocturnal and diurnal. The most recognizable snake noise is a hiss followed by the rattle of a rattlesnake.
If you find a snake hissing in your home or on your property, leave it alone. Snakes hiss as a warning before they strike.
Rattlesnakes rattle when they feel threated. It is the last warning someone gets before they strike.