Tea should be stored in an airtight, opaque container in a cool, dry place. Many tea retailers sell tea in metal tins that close tightly. Clear glass jars are acceptable only if you can keep them in a closed cupboard away from light. If you reuse containers, avoid using materials that retain odours, as the tea will pick them up.
The refrigerator is not a good place. The cold encourages water condensation, which can ruin the tea.