Home Diabetes Glossary dawn phenomenon dawn phenomenon Monday,January 4, 2023 ByDiabetesCare.net by DiabetesCare.net | Jan 4, 2023 | 0 comments (feh-NAH-meh-nun): the early-morning (4 a.m. to 8 a.m.) rise in blood glucose level. Submit a Comment Cancel replyYou must be logged in to post a comment.