Heat Island Effect This Warm Winter, Austinites Can Look Out Their Windows And See Climate Change By Mose Buchele | KUT • Feb 25, 2020 Gabriel C. Pérez / KUT Bats in December. Bluebonnets in January. Butterflies in February. These are a few of the unseasonal appearances Austinites noticed this warm winter. And, experts say, people should get used to such sights.