Bright light means a full day of light from a southern or western facing window or a supplemental plant light. The temperature should remain above freezing, in the 45 - 55 F. range. That generally means an enclosed porch, with windows, an unheated sun room or something along those lines.
If there are a lot of windows, keep watch that the temperature does not warm about 60 F. during sunny days, or your plants will think it is time to start growing. This probably won't hurt the plant, but they will require more care if they are growing than if they are sleeping. And some plants that bloom only once, will bloom earlier than you might want.
Water the plants when the soil feels dry a few inches below the surface. Don't over water, so that they are sitting in a puddle. Do not feed the plants until the days lengthen in spring. You will start to see new growth at that time.
A bonus for over-wintering plants in cooler temperatures is that few insects will bother them. Most insects prefer warmer temperatures and by the time they show up, it will be time to move the plants back outdoors.
Be sure to ease your plants into the transition from indoors to out, by letting them harden off slowly.
Plants that Prefer Cool Temperatures and Bright Light
|Common Name||Botanical Name||USDA Hardiness Zones|
|Lily of the Nile, African Lily||Agapanthus||8-11|
|Lemon Verbena||Aloysia triphylla||8-11|
|Hummingbird Plant||Dicliptera suberecta||8-10|
|Mini Angel's Trumpet||Iochroma australis||9-11|
|Honey Bush||Melianthus major||Zone 8-11|
|Sweet Olive||Osmanthus fragrans||7-10|
|Mexican Single Tuberose||Polianthes tuberosa||8-10|