How hot can these guys go?

[Pilot]

I'm growing a violacea. Its small and pathetic and needs some serious help when it comes to its care. For whatever reason I could never get this thing to grow well for me, until I found out they like it brighter and warmer. So in an attempt to save this plant, I have placed it inside a large jar, with the top open to the sunroom. During the second half of the day, this South-West-North facing room gets inundated with huge amounts of sun and it warms up fast. However, inside the glass jar, it gets hot and very humid, which is good re the humidity because here in Colorado, a good shake of a wet towel will leave it bone dry!

I have not measured the temp-- but its easily pushing 100 if not above, inside the jar. I don't want to bake this plant, but would like to know how hot these things can get. I've been in the tropics before where temps can reach inbelievable temps and humidity that makes you want to melt. So I'm hoping this plant will enjoy it but cannot be sure.

Your thoughts? This plant needs special care to get back on its feet and get going. In order to give it good light, it needs to be in this room, as its warm, but possibly too warm.