The 3 rights of worm composting are the right temperature, the right moisture and the right food.
The Right Temperature
The RIGHT TEMP for red wiggler worms (eisenia foetida)are between 40-90 degrees , optimal is 70-80 degrees. Some protection from cold and heat will be necessary to keep worms alive and in working order.All that being said, worms will survive in temps below freezing and temps above 90. Heck, I live in Texas and we see weeks of 100 degree weather. BUT you must keep the bin temps between 40-90 and it is doable.
The Right Moisture
The RIGHT MOISTURE is around 80%. Some describe it as moist, some say like a wrung out sponge. I describe it as wet but not dripping. When you reach in and touch the bedding you should have moisture and debris on your hand. And if you pick up a handful of bedding and squeeze a few drops of water should drip out.
The best way to know is to feel a active established bin. So find a worm farmer nearby and feel his bin! lol. Here is what a moist bin looks like but again feeling is believing!
The Right Food
The third right is the RIGHT FOOD. Along with the right food is the right WAY to feed. Remember not only the proper food stock but only feed when all food is gone. Always ere on the side of underfeeding rather than overfeeding.