What is the lowest temperature at which a T8 lamp will operate?

How much light do they produce at sub-zero temperatures when they don't operate properly?

I'm looking at an equipment shop on a farm. It might never be used in the winter or it might be heated when it is used.

Low bay HID hang too low for the equipment and T5 HO in an enclosure that will work are too expensive for something that might never be needed. Is T8 even an option?