In our experience, Austin Texas weather can change very rapidly certain times of the year. As the saying goes here in Texas: "If you get tired of the weather, just wait 30 minutes!" 
If you have to drive a long way to get to Austin, it's a good idea to look at the weather forecast to make sure the weather's plans go along with your vacation plans!
Before we get to the Austin weather forecast though, let's take a brief look at the Austin climte. It will give you an idea of what to expect in general.
Austin has a humid subtropical climate, although I don't think the humidity in Austin is anywhere near Houston's.
Summers are usually hot, with temperatures averaging around 95°F in July and August, but sometimes going over 100°F. Winters are mild and dry, with temperatures averaging around 40°F in December and January, but sometimes dropping into the 20s.
While Spring is beautiful with lots of Blue Bonnets growing along the roads, it is also the rainy season and a time of severe thunderstorms, which sometimes causes flash flooding in the area. The Fall is a great time of the year. The worst of the summer heat is over, and there is less rain than in the Spring.
Here's a complete weather forecast for Austin for the next several days:
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I hope Austin's weather will be exactly what you wanted during your vacation in Austin!

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