Temporal is the word that you seek because it delivers the meaning that you intend without having a familiar positive meaning attached to it, like the word worldly.
temporal (adj.)
- of or relating to time.
- pertaining to or concerned with the present life or this world; worldly: temporal joys.
- enduring for a time only; temporary; transitory (opposed to eternal).
- secular, lay, or civil, as opposed to ecclesiastical.