>>510190347
The thing to note is that the thermometers that are most often used don't include things like airflow and humidity. For instance, 27C at 10% humidity is much more pleasant than 27C at 80% humidity. Also, of course, being in direct sunlight is hotter than being in the shade due to radiated heat directly going into the body. (same reason why a thermometer in the sun will read way higher away from actual temperature compared to one in the shade)
If you really want an accurate reading that badly you could get a wet bulb thermometer reader or just stop caring like a true oldfag. After all, worrying about something that cannot be changed is a waste of effort.
Also something worth noting, the temperature locally can vary a lot (tree cover, AC units nearby, asphalt surfaces, etc.) so it could be worth checking where the local weather reading site is and see if it really is just a difference of 3-5 degrees between there and your house.
