It means that it is neither too hot nor too cold for whatever requirements you are considering.
The optimal temperature for dehydrating apples is around 135F to 140F.
The optimal refrigerator temperature for food storage is 37-40 degrees Fahrenheit, while the optimal freezer temperature is 0 degrees Fahrenheit.
The optimal temperature for storing cod is between 30 to 34 degrees Fahrenheit.
The optimal fridge temperature for food storage is 37 to 40 degrees Fahrenheit.
The optimal refrigerator temperature for food storage is 37 to 40 degrees Fahrenheit.
The optimal temperature for urine to indicate good health is around 98.6 degrees Fahrenheit, which is the normal body temperature.
The optimal temperature for storing wine in a cave is typically around 55 degrees Fahrenheit.
The optimal stove temperature for baking a cake is usually around 350 degrees Fahrenheit.
The optimal temperature for dehydrating mushrooms in a mushroom dehydrator is around 130F to 140F.
The optimal temperature for rendering beef fat is around 250-275F (121-135C).
The optimal temperature for yeast to rise effectively is around 95-100F (35-38C).
The optimal temperature for storing and using LPG gas is between -44F and 120F.