equable

1. (of temperature) Free from extremes of heat or cold.Examples: "The indulgences of habit she would not resign, therefore held by the pleasures of the table; but the comforts of equable heat, which was particularly necessary, she denied herself much too long, and resisted warm clothing most determinately;..."

2. (of emotions etc) Not easily disturbed; tranquil.Synonyms: imperturbable, steady, tranquil