Direct answer: Whether butter belongs on the counter depends on the type, temperature, and time. Use a covered dish for short, controlled storage and follow food-safety guidance for perishable foods.

Keep the conditions controlled
Salted butter is generally more forgiving for short counter storage than unsalted butter, but warm rooms change the risk. Keep the dish covered, out of direct sun, and away from heat. When in doubt, refrigerate it.
Choose a practical dish
A covered ceramic dish keeps the counter tidy and limits contact with dust and kitchen splashes. See the live Famiware butter dish for current colors and availability.
Frequently asked questions
How long can butter stay out?
Use conservative timing and room-temperature judgment. Refrigerate promptly if the room is hot or the butter is unsalted.
What if the dish becomes warm?
Move it to the refrigerator and wash the dish before refilling.
Source: USDA FSIS food-safety guidance.