Outdoor/Indoor Thermometer

Because I live in a place where the weather constantly changes, it would be nice to also see an outdoor/indoor temperature status from each cam. I was wondering, if cameras can detect temperature, it would be nice for it to show it in the recording. If cameras doesn’t have one built in, can you create a product that would detect temperature so we can monitor it while looking at the recording?

Has there been an update to this? I need to know what the temperature is different places on my property. Thx