@Francesco1366
Have you ever ventured into your local archived newspapers to find earlier weather records?
We are blessed to have had sage people before us record all the information in their eras.
I've stumbled on weather records dating back to prior to 1600 in Papers Past.
It's fascinating reading however one must also look where they took the temperature and how it has changed in those locations with buildings, or if the temperature is now been taken in a different location in the area.
As an example, in Auckland the temperature used to be taken in Albert Park in the what used to be a small Victorian settlement with one or 2 storied buildings, alas it is now a city full of taller (in my own opinion ugly) buildings and the weather temperature, rain etc is recorded further to the West Coast of Auckland closer to Auckland Airport.
These things are all variables as to how we should be interpreting such records.
Perhaps you have some stories to add to this topic to in your location and how it has changed.
Do you have any Sundials in location?
Who made them, what are they made of and when were they made?
Perhaps you can add them to your listing as a point of interest.