Outdoor football in November and December is a different sport than a dome in September. Wind above 15–20 mph is the one that should make you look at the total and the kicking game. Snow can kill a passing attack or do nothing if it is a dusting. Cold by itself is overrated; wind chill is not a cover.
Check a real forecast the morning of, not the Wednesday line. Books shade totals early. The public still bets the Friday night graphic. You do not have to.
General information, not advice. Gambling involves risk. See the disclaimer.