Originally Posted by Iordz
The beer will be drinkable, granted there might be a lot of esters, phenols and maybe some fusels. You could buy a bucket, put the carboy in, fill it up half way with water, soak a towel in the water and then cover the carboy with the wet towel. The swamp cooling method works well and it's relatively inexpensive. You can also put a couple of bottles of frozen water in there to bring the temp down lower, you have to exchange them every couple of hours to keep the water cool.
This swamp cooler pratice works!! Use a kegger tub. You can find one at Menards.
Where's home? Got a basement or garage? Outer wall? Opportunity to turn down heat or stick it under the AC vent? Open a window?
A weizen can go high in heat depending on the yeast. It will be fruity and estery anyhow since that's the style. Weizens are a traditional warm weather brew.
Do what you can to get it to 75'F. If you can do this it would be much better than leaving it at 80F. Try not to subject it to wide temp swings 80 to 60 and back up. Just shoot for a slightly cooler 75'F
If you can do this it will be OK