Periodic.
Published at regular intervals of more than one day, especially weekly, monthly, or quarterly.
Of, or relating to such a publication.
A regularly issued thematic publication that contains the most current information in its field, often the primary means for communication of original scholarship or creative work at the cutting edge of research in its field.
A publication issued regularly, but less frequently than daily.
Of, related to, or reliant on a season or period of the year, especially with regard to weather characteristics.
Anything that is seasonal, such as a financial trend, a product for sale, or an employee.