Tony Gwynn hit .475 in August of '94. Granted, it was only like 10 games, and then the strike hit. Rod Carew hit .486 in June of '77, 54-111. He began that month with a 1-3 and ended it with a 2-5, so, he has a 51-103 streak in there. He hit 8 triples that month. That seems like a lot.
He also started the 1983 season 48-96 (though, he was under .400 for part of that stretch). And, he didn't quite show Votto's power. :-)