How does cold weather affect the electronics
I've never seen a semiconductor destroyed by cold weather but operating them below their rated temperature can sure cause them to malfunction.

Years ago, we were using one particular brand of 7805 regulator that was rated for use at 0C through 70C.  When used outdoors, it functioned as a very nice thermostat and turned OFF at about -20F.  The cure was to replace it with a part that was rated to work cold.