A low body tempature what could be the grounds?

Last week my two kids had a cold beside a high hallucination. I caught the cold but it wasnt nearly as bad as my kids. My husband finally get the cold over the weekend and he went to jump check his temp. and it was 96.7. He say he is hot and sweaty and felt lightheaded on Saturday along with the cold symptoms. Doesn't your temp. progress up with a cold not down? What could be going on? You usually don't achieve a fever beside a cold, because it's a virus.
My husband's temperature is other on the lower side, so it could just be common for him. If he was sweaty he could also own genuenily been cold. 96.7 is not hypothermic so I wouldn't verbs about it.
unresponsive!