Is it normal to have gray hair at 30?
Mostly.Normal for most people
Yes, it can be normal to have gray hair at 30. When it starts is largely down to genetics, and it varies a lot from person to person.
A few gray hairs by 30 are nothing unusual, and some people go gray earlier while others keep their natural color for years. Family history often gives you a pretty good clue about when yours might show up.
Most people see it as a normal variation, though you may feel surprised if it starts earlier than you expected. If the change happens very suddenly or comes with other symptoms, it’s reasonable to mention it to a healthcare professional.