You invoke magical control over the ambient temperature in a 30-foot radius sphere centered on a point within range. This spell allows you to change the temperature within the area, making it more comfortable or extreme as needed.

Comfortable Temperature: You can make the area comfortable, adjusting it to a temperature between 60 and 75 degrees Fahrenheit. Creatures within this area gain advantage on saving throws against environmental effects caused by extreme heat or cold.
Extreme Temperature: Alternatively, you can make the area extremely hot or cold. Choose one:

• Extreme Heat: The temperature within the area rises to unbearable levels. Creatures that enter or start their turn in the area must succeed a Constitution saving throw or take 2d6 fire damage.
• Extreme Cold: The temperature within the area drops to freezing levels. Creatures that enter or start their turn in the area must succeed a Constitution saving throw or take 2d6 cold damage.