Hey Bubby,

All I know is that it must not be kept in the fridge.

Sorry, I don't compute the temperature ranges you gave as we use a different system in Australia.

As long as you store it in a cupboard or on a bench it will be fine.

I am sure it can cope with ordinary climate change. Shake it a bit before using,

Hope this helps a bit.

Okay, I checked it. We use celsius. 63 is 17 celsius. That is cold.

In your position, I would wrap the bottle in a cloth like a hand towel and keep it up high in the pantry cupboard.