What temperature setting should I choose if I want to use my electric blanket all night? Issy 24 November 2021 11:57 Updated If you are using the blanket all night, use it at temperature setting 4 or lower, for your safety and comfort. Related articles How can my electric blanket be secured to the bed? How long will it take for the heated throw to heat up? Comments 0 comments Article is closed for comments.