When this spell is cast, a faintly shimmering aura surrounds the recipient. The aura insulates the recipient from the effects of nonmagical heat and cold in a range of -20 F. to 140 F. Any time a traveler encounters temperatures in this range, he maintains a comfortable temperature of 70 F., regardless of prevailing weather conditions.
Additionally, the spell acts as a shield against rain, snow, and hail, which are blocked by the aura.
If a recipient encounters a temperature above or below the stated range, the temperature within the aura is altered by an equal number of degrees. For example, a recipient who encounters a temperature of 150 will actually experience a temperature of 80