Good grief, tumult. That is HOT!
Yes, it can get quite hot here with the humidex and all that, BUT what you've got is really hot! You probably have to literally peel yourself off of the organ bench, getting all stuck as you try to play something with your feet. One could probably lose some weight through sweat alone by playing in your conditions.
I remember once I was at a church that was air conditioned which was nice for the folks in the pews but of no use to the choir and I up in the balcony. The air conditioning never got to us.
As for cold, we'll out here it gets VERY cold. The winter here has been absolutely relentless and merciless.
I once played in a beautiful old church in the middle of winter when the boiler broke down. It was out of commission for about 1-1/5 months. The church was FREEZING. I had to have choir practices at someone's home. When it came time for the service, we wore our coats and I had heaters for the choir. My fingers were stiff.
But you know you have a really amazing and dedicated choir when they still show up and stick with it even when it's that COLD.
...surprisingly, when I helped the builder tune the organs, they held out pretty good considering the arctic temperatures we had to deal with!
I'll always love that church though. It's such a shame it's closed down now. Everyone in that church fell victim to nasty top down politics. But that's another kettle of fish altogether.