as long as you mean 70F, yeah, it'll be ok for a while. if you could do it 10 degrees cooler, like in a basement, that'd be even better.
kicking it up to 90F...that wouldn't be the best thing. avoid extremes.
Primary: English Mild
On tap: Pale Ale, Lancelot's Wheat, English Brown Ale, Steam Beer, HoovNuts IPA
Bottled: MOAM, Braggot, Raspberry Melomel, Merlot, Apfelwein, Pyment, Sweet mead, Cabernet
Gal in 2009: 27, Gal in 2010: 34, Gal in 2011: 13, Gal in 2012: 10