Austin has a humid subtropical climate, characterized by hot summers with prevailing humid winds from the Gulf of Mexico and mild winters. On average, Austin receives 33.6 inches (853.4 mm) of rain per year, with most of the precipitation in the spring, and a secondary maximum in the fall. During springtime, severe thunderstorms sometimes occur, though tornadoes are rare in the city. Austin is usually at least partially sunny, receiving nearly 2650 hours, or 60.3% of the possible total, of bright sunshine per year.
Austin summers are usually hot, with average July and August highs in the high-90s °F. Highs exceed 90 °F on 109 days per year, and 100 °F on 12. Winters in Austin are mild and relatively dry. For the entire year, Austin averages 88 days below 45 °F and 18 days when the minimum temperature falls below freezing.