Austin Weather in September: Temperature, Precipitation, Wind
Austin, Texas experiences a warm and predominantly dry climate in September, marking the transition from summer to fall. The average temperature hovers around 29.5°C (85.1°F), with daytime highs reaching 36°C (96.8°F) and nighttime lows dipping to 23.6°C (74.4°F). Heat indices push the perceived temperature even higher, with the average maximum feeling like 37.2°C (98.9°F).
Humidity levels in Austin during September average 58.9%, contributing to the warm and occasionally muggy conditions. Precipitation is relatively scarce, with an average of only 1.24 inches (31.5 mm) of rainfall throughout the month. Rain occurs on approximately 7 days, covering about 4% of the month. The most common precipitation type is rain, with no snowfall expected during this time of year.
Wind patterns in Austin during September feature average speeds of 16.4 km/h (10.2 mph), with gusts reaching up to 34.7 km/h (21.6 mph). Atmospheric pressure remains steady at 1013.1 hPa. Cloud cover is minimal, averaging 23.6%, allowing for ample sunshine and clear skies. The most common weather condition is “clear-day,” providing excellent visibility of around 15.6 km (9.7 miles).
UV index levels are high in September, averaging 8.1, necessitating sun protection for outdoor activities. Popular outdoor destinations like Zilker Park and Lady Bird Lake see increased activity during this period due to the pleasant weather conditions. The risk of severe weather remains moderate, with an average severe risk index of 37.5.
Daylight hours gradually decrease throughout September. Sunrise occurs on average at 7:15 AM, while sunset takes place around 7:36 PM, providing ample daylight for enjoying Austin’s vibrant outdoor scene, including the famous Sixth Street entertainment district and the Congress Avenue Bridge, known for its bat colony.
What is the temperature in Austin in September?
Average air temperature in Austin is 29.5°C (85.1°F) in September. The outside temperature in Austin feels like 30.5°C (86.8°F) on a typical September day. The highest average temperature during sunny days is 36°C (96.8°F) and feels like 37.2°C (98.9°F). The lowest average temperature after dark is 23.6°C (74.4°F) which feels like 23.6°C (74.4°F).
How hot is Austin in September?
The hot temperature in September in Austin rises to 41.1°C (106°F) on sunny days with low cloud coverage and 58.9% humidity. During hottest days of September it feels like 42.3 °C (108.1°F). The average maximum temp in Austin is 36°C (108.1°F) during day time in September.
How cold is Austin in September?
The coldest temp in Austin in September drops to 19.4°C (66.9°F) during the cold nights. With 16.4km/h (10.2mph) winds and 58.9% humidity it feels like 19.4°C (66.9°F) on the coldest nights. The average minimum temperature is 23.6°C (74.4°F) during night time in September.
Does it rain in Austin in September?
Yes, it rains for 7 days in Austin, United States in September averaging 1.24 mm of precipitation. Austin has a 23.3% chance for rain throughout the entire month of September.
How much does it rain in Austin throughout September?
Austin has 1.24 mm (0.05 inch) of rain per day on average in September. It rains for an average of 7 days out of the entire month.
Is Austin windy in September?
The average speed of wind in Austin, United States during September is 16.4km/h (10.2mph) and average windgust is 34.7km/h (21.5mph). On some days in September wind can reach up to 24.3km/h (15.1mph).
What is the direction of the wind in Austin in September?
Most days of September the wind is blowing from Southeast direction in Austin.
What are the humidity levels in Austin in September?
The average humidity levels in Austin in September are 58.9%. Daily humidity levels in Austin range from 41.6% to 83.9% during September.
How many hours of daylight are in Austin in September?
Austin has 12 hours 20 minutes of daylight in September on average. Sunset and sunrise times gradually change throughout the month. Sunrise in Austin in September is at 7:15:38 and the sunset is at 19:35:59.
What is the cloud coverage in Austin in September?
Clouds cover 23.6% of the sky on average throughout September in Austin. The cloud coverage ranges from 2.2% to 77.2% depending on the day of the month.
What is the UV level in September in Austin?
The average UV index in Austin is 8.1 in September. UV levels change throughout the month and range from 7 to 9.
What is the solar radiation in Austin in September?
The average solar radiation is 216.3 W/m2 (Watts per square meter) in Austin during September. However solar radiation levels change throughout the month and range from 127.4 W/m2 to 262.5 W/m2.
What is the solar energy during September in Austin?
The average solar energy during September in Austin is 18.7 MJ/m2 (megajoules per square metre). Solar energy ranges from 11 MJ/m2, to 22.6 MJ/m2 during September.
Are there severe weather risks in Austin in September?
Yes, there is a 37.5% risk for severe weather in Austin, United States in September.
What is the air pressure in Austin in September?
On average the air pressure in Austin in September is 1013.1 mb (millibars). Throughout the month the sea level pressure ranges from 1009.2 mb to 1016.4 mb.
What is the visibility in Austin in September?
The average daylight visibility in Austin in September is 15.6 km (9.7 miles). Depending on the precipitation the visibility ranges from 12 km (7.5 miles) to 16 km (9.9 miles) throughout September.
What is the dew point in Austin in September?
The average dew point in Austin during September is 19.3°C (66.8°F).
Where is the data for Austin climate in September coming from?
The climate data for Austin, Texas, United States in September is collected from the following weather stations.
- AUSTIN EXECUTIVE AIRPORT, TX US
- AUSTIN BERGSTROM INTERNATIONAL AIRPORT, TX US
- AUSTIN CAMP MABRY, TX US
- CW2969 Austin TX US
- DW9418 Austin TX US
- KATT
- KAUS
- KEDC