« on: December 16, 2016, 06:19:47 AM »
Propane freezes at -44F per Google - I've used my gas grill in winter on the coldest of Chicago days with no problem for 20 years.
I boiled outside on the deck recently when it was very cold - other than about another 3/4 gallon evaporation than usual and having to go outside to stir it worked just fine. Was kind of fun watching the cloud coming off the kettle.
Oh - do not try cooling off the wort in a snow bank - it acts as the world's best insulator and sits hot for hours and hours. I didn't have much luck leaving it out in the wind and cold to cool either, and went back to normal wort chiller inside.
I do the indoor/outdoor routine every time I brew. I mash and sparge in my basement workshop and do all the heating outside on the walkout patio. I chill indoors with an IC. I used a flat furniture cart to move the kettle around. It beats standing outside on sub zero weather.
I have frozen the regulator on my propane tank a couple of times though. You have to keep an eye on things out there.