Let’s have a good track weather (bar, temp, humidity, corrected altitude) discussion

When I last raced (in the 90's), some guys swore by their e.t. predicting devices (anything from the temp/baro/hygrometer gizmo on the living room wall, to whatever the lastest hi tech gizmo was), and some swore at them.
We did record weather info (we used a buddy's "weather station"), etc. in a logbook, and never saw a dependable pattern.

As a result, my partner and I could never decide what to buy. Instead we used to watch the first few pairs, and see if more cars were breaking out, or more cars couldn't run their number, and dial accordingly.

Is there a good predictor these days, or is this like asking what oil is good?

I kick around the idea of racing my Duster, but with the loss of Atco, I'll have to go to Cecil County, my only real choice, as I live waaaaay down in southern New Jersey. I'll have to see what that drive is like.