Austin weather in September
Long-run climate averages for Austin, TX in September, plus what the forecast models say for the days ahead.
In September, Austin averages 93°F by day and 74°F at night. The wettest month is usually May.
September in Austin averages a daytime high of 93°F and an overnight low of 74°F, which reads as hot for this part of the world. Across the whole year Austin sees roughly 44 inches of precipitation.
Climate averages tell you what to pack. They do not tell you what next Tuesday looks like — for that, see the live Austin forecast with every model compared and how much they currently agree.
Austin weather by month
what to expect in Austin through the yearHere is Austin's typical weather in each month: the average daytime high and overnight low in °F, how each month feels, and the wettest month marked. Use it to plan any trip to Austin by season.