Heaviest rainfalls occur in late spring, with a second rainfall peak in September. Rainfall from April through September is mostly from thundershowers, with fairly large amounts falling within short periods of time. While thunderstorms and heavy rains can occur in all months of the year, most of the winter precipitation is light rain. Snow is insignificant, and usually melts as rapidly as it falls. It's been years since we've seen a snowman in Downtown Austin.
Winds prevail from the south throughout the year.
Northerly winds accompanying the colder air masses in winter soon shift to southerly as these air masses move over the Gulf of Mexico. Destructive winds and damaging hailstorms are infrequent. On rare occasions, dissipating tropical storms affect the city with strong winds and heavy rains. Weather Conditions Month Average temp. U.S. Weather Service Austin is a Clean Air City, which means that extra efforts are made to keep the air free from polluting particulates.