Whether you call it "fresh" or "chilly": the temperature seems to drop by several degrees Celcius (not sure what a thermometer in the shadow might have told). But he temperature drop does not wait for the total eclipse - it's starting earlier.
On August 11th, 1999 we had a total eclipse here at Stuttgart, Germany. The total eclipse lasted well over 2 minutes. The best: we hadn't to move further than outdoors to observe it.
The remarkable thing is that it's getting quite 'fresh' once the sun is covered by more than 50 % or so. Even on an otherwise hot August day.
Today is a Pythagorean Day because 8 15 and 17 form a Pythagorean Triple. Has there ever been a solar eclipse on a Pythagorean Day? I'm watching it on tv because I need my eyes and I saw the one in 1979 and it wasn't that big a deal. Just another chance to verify Einstein's Theory of Gravity and to sell smoked glass.
@MeasurementBlues: I read the other day about fake eclipse glasses starting to appear online....
I heard that too -- if you look at an incancecent or flurescent light through them and you can see any light, don;t use them to view the eclipse -- even 1% of the sun's light is enough to cause retinal scarring