 With temperatures soaring into the upper 80s today in the Twin Cities and into the upper 90s in southwest Minnesota, it's important to stay hydrated to keep your body safe. Experts recommend men drink 13 cups of water daily, women should drink at least 9 cups of water, and children should drink 6 to 8 cups of water. That is according to Katie Loth. She's a dietician at the University of Minnesota Medical School.