That is my worry with the cheaper bags like that. Springs dont really care what the temperature is
I don't know about your application but I'll weigh-in
here, regardless. When I moved my camper from my 2004 Ram 1500 (leaf springs) to my new Cummins 2016 Ram 2500 Bighorn (coil springs) six years ago, the 2500 would rock side-to-side on straight roadway at 50 plus mph. I installed Air Lift bags with the heavy duty onboard pump, right/left check valve, and two inflation valves at the rear license plate screw holes as a backup.
Although air bags inherently provide a progressive spring rate (the coils are progressive on the 2500 too), the additional stiffness nearly completely eliminated the rocking and I've even flat-towed our CRV behind it at up to 90 mph on the high speed interstates of Idaho and Utah in perfect comfort and control.
Had the price not been so right on the 2500, I would've bought a 3500 for its leaf springs, which is clearly what works best for truck mounted campers, but I have no regrets since I installed the air bags (which also allow me to level the camper perfectly very easily with air when parked, as long as I put the back end on the slightly downhill side).
Perhaps most significantly to this post, I've camped extensively during the winter months in Northern Idaho and Montana in it (skiing and hunting trips) and never had any problems during extreme cold conditions. This was my first airbag purchased (having used helper springs in the past) and I have no financial interest in Air Lift and I purchased the airbags from an online dealer during a factory rebate offer.