In a lot of styles you won't notice the effects of warmer temperatures. If you stick to very clean fermenting yeasts (safale56 is a good one), you shouldn't have much trouble. If you have A/C in the house, it should pull the humidity down enough that you could use the damp towel trick to bring the fermenter down to 72F.
The Brown I have fermenting ran up to 81F last night. The room was much cooler, but the yeasts got too happy. It's down to 71F now. We shall see.
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