What is the temperature of the air at 15000 feet on the windward side?

At 15,000 feet, the temperature of the air on the windward side can vary significantly depending on the geographical location and time of year. However, as a general rule, the temperature typically decreases with altitude, averaging around -10 to -15 degrees Celsius (14 to 5 degrees Fahrenheit). The presence of moisture and local weather patterns can also influence the temperature, potentially resulting in warmer or cooler conditions.