Uhh... they look at the sky? And check the weather report? Is it really that hard?

 

eh sometime but i usually know when its goin to rain over here in cali!

 

If its so hot that you need to leave your windows open, rain isn't likely to be on your list of worries. Its 46 degrees C here nowadays, and i leave the windows open a wee bit for the heat in the cabin. Rain is defnitely not something im thinking of except that im dying for the weather to be different rainwater>sweat

 

In this part of the country we worry more about snow than rain.

 

if you're talking top down A/C vs top down no A/C, then yeah, running the A/C takes more energy.

however i don't think that was the point AZDavid was making.

with the top up, driving with the windows down increases drag and effectively erases any benefits of not running the A/C.

 

People usually only do that when it's hot as hell out, and it doesn't rain when it's hot as hell out.

 

Im here in NYC. and it really can rain without notice and the weather report is never ever right.~

 

My windows are always opened...

 

^LMFAO!!

 

ahahhahhahahhahahahahahahh NICEEE