I just disagree. Temperatures of historic photographs of scenes could be tracked. People aren’t thinking outside of the box. Battle scenes that say it was 98°F or 12°F could add to the interest of understanding a hardship or strategy at that time. Sports photographs of football games played in subfreezing temperatures could add to the historic interest of a famous game that was photographed and played at 2°F. A photo with this data would be a more complete “picture” of the time. I can think of many more examples. Don’t worry if you don’t see it now, but it will happen if you like it or not. Cheers.