All the palms we grow, either for sale or for decorative purposes, are natives of a warm climate, and although submitting for weeks to a lower temperature than they would ever be subject to in their native climate, yet that is not what they should be grown in. Men who raise thousands of young plants to sell to the trade must, to make it profitable, give them a good, high temperature, particularly in summer, although a slow-grown palm is much better than one quickly grown. A good temperature for the florist who grows or keeps a stock of palms for sale would be 60 to 65 degrees at night, with a rise of 15 degrees in the daytime during the dark days of winter, and in spring and summer 70 to 75 degrees at night and as warm as you like in the daytime, providing you have plenty of air.
Large palms that you keep for decorations solely are better kept not higher than 55 degrees during winter. You don't want them to make young leaves while you are using them, which would likely be injured by a chill in transit in cold weather.