Austin weather in September
September in Austin averages 91°F by day and 70°F at night, with 3.5 inches of precipitation. It is the 4th-warmest and 4th-wettest month of the year here.
- Average high
- 91°F-6° vs August
- Average low
- 70°F0 nights below freezing
- Precipitation
- 3.5 in4 days with 0.1 in. or more
- Snow
- 0.0 in20 days at 90°F+
Is September a good time to visit Austin?
September is hot. Average highs reach 91°F, with about 20 days at 90°F or more. The most comfortable months overall are February to April and October to December.
What to do in Austin in September
Mix it up: Lyndon Baines Johnson Library and Museum, Texas State Cemetery, Bullock Texas State History Museum, The Contemporary Austin. All things to do in Austin.
On September 15 the sun rises at 7:15 am and sets at 7:36 pm, giving 12h 20m of daylight. Daylight all year.
What to pack for Austin in September
- Light, breathable clothes, a hat and sunscreen; carry water
Based on 30-year averages, not a forecast. Check the forecast a few days before you go.
September nearby
| City | Distance | High | Low | Precip. |
|---|---|---|---|---|
| Austin | 91°F | 70°F | 3.5 in | |
| Cedar Park, TX | 13 mi | 91°F | 70°F | 3.5 in |
| Leander, TX | 18 mi | 91°F | 70°F | 3.5 in |
| San Marcos, TX | 22 mi | 91°F | 67°F | 3.0 in |
| Georgetown, TX | 22 mi | 90°F | 67°F | 4.0 in |
| Round Rock, TX | 25 mi | 90°F | 67°F | 4.0 in |
| New Braunfels, TX | 47 mi | 92°F | 68°F | 3.5 in |
Frequently asked questions
What is the weather like in Austin in September?
In September, Austin averages a high of 91°F and a low of 70°F, with 3.5 inches of precipitation (NOAA 1991-2020 normals).
Is September a good time to visit Austin?
September is hot in Austin, with average highs of 91°F. Plan outdoor time for mornings and evenings.
Does it snow in Austin in September?
Rarely. The September snowfall normal is under half an inch.
Before and after: Austin in August and Austin in October. All twelve months: Austin weather by month.
NOAA NCEI 1991-2020 climate normals, station Austin-Camp Mabry, TX, 0.5 miles from the city center.