LOL, our outdoor decorations are down except for a wreath (real pine) that I usually keep up until the end of January. But here sometimes it depends on the weather. There have been years with long stretches of snow, ice and frigid cold, when it wasn’t practical to climb on the roof to take down lights and others are frozen stuck on the bushes (though we do keep them unlit). And in parts of upstate NY and New England, it is a very common to see Christmas decor on through the winter, well into February or even March.
Also, FWIW, for some, it is not Epiphany, but rather Candlemas, that signals the end of the Christmas season. Candlemas, or the Feast of the Presentation of the Lord, is February 2, and is related to the origin of the secular tradition of Groundhog Day.