Ron,
Thanks for the info.
Here our temps can shift just a bit, I have seen 141 degree shift from summer to winter. Just yesterday it was 103 now its 75 and by Friday our high will be 59 and rain.
Here is not uncommon that the first thing installed in work trailers here is insulation, a gen set and electric heater. That way you can keep tools and consumables are workable temps. Showing up with a 5 gallon latex Popsicle makes for a bad day.
Cheers,
Steve