Water boils at only 203 degrees F, compared to 212 degrees at sea level. Because of this, cooks need to adjust their recipes and follow high-altitude cooking instructions. Anything cooked by boiling, for example, will need to be boiled a little longer at high altitudes. | Water boils at only 203 degrees F, compared to 212 degrees at sea level. Because of this, cooks need to adjust their recipes and follow high-altitude cooking instructions. Anything cooked by boiling, for example, will need to be boiled a little longer at high altitudes. |