Austin climate

Austin Weather in September

NOAA 1991-2020 normals for Austin-Camp Mabry, 6.2 km from Austin

Average highs run from 95°F on September 1 to 88°F on September 30, and lows from 73°F to 66°F. Normal precipitation for the month is 3.45 in over about 7 wet days.

September day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Austin, in °F, with the record for each date.406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
91°F
Average low
70°F
Precipitation
3.45 in
Record high
112°FSep 5, 2000
Record low
41°FSep 27, 1942
Chance of a freeze
0%
Days of 90°F or more
20.0
Daylight
12 h 45 min to 11 h 53 min
Cloud cover
46%
Humidity
66%
Dew point
65°F
Wind
7.8 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Sep 195°F73°F107°F 200062°F 194422%0%
Sep 295°F73°F107°F 200067°F 196722%0%
Sep 395°F73°F108°F 200059°F 197423%0%
Sep 494°F73°F110°F 200058°F 197423%0%
Sep 594°F73°F112°F 200056°F 197423%0%
Sep 694°F73°F103°F 201957°F 197423%0%
Sep 794°F72°F105°F 202357°F 201723%0%
Sep 893°F72°F107°F 202359°F 195723%0%
Sep 993°F72°F104°F 202356°F 195723%0%
Sep 1093°F72°F101°F 194058°F 202023%0%
Sep 1193°F71°F104°F 201161°F 196823%0%
Sep 1292°F71°F105°F 201156°F 194023%0%
Sep 1392°F71°F105°F 201155°F 194023%0%
Sep 1492°F71°F103°F 201155°F 194523%0%
Sep 1592°F70°F103°F 202655°F 194523%0%
Sep 1691°F70°F101°F 201954°F 194523%0%
Sep 1791°F70°F99°F 202155°F 196123%0%
Sep 1891°F70°F101°F 201954°F 196823%0%
Sep 1991°F69°F101°F 195652°F 198123%0%
Sep 2090°F69°F103°F 195652°F 197123%0%
Sep 2190°F69°F99°F 200553°F 193822%0%
Sep 2290°F69°F101°F 200549°F 198322%0%
Sep 2390°F68°F101°F 202352°F 198322%0%
Sep 2489°F68°F103°F 202353°F 194722%0%
Sep 2589°F68°F107°F 200553°F 198922%0%
Sep 2689°F67°F107°F 200548°F 194222%0%
Sep 2789°F67°F103°F 195341°F 194222%0%
Sep 2888°F67°F106°F 200549°F 194221%0%
Sep 2988°F67°F101°F 201147°F 196721%0%
Sep 3088°F66°F99°F 201948°F 198421%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Austin, in percent, and of at least 0.1 inch of snowfall.05101520251102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

September 1
sunrise 7:08 AM, sunset 7:53 PM
September 30
sunrise 7:24 AM, sunset 7:17 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00013958 (Austin-Camp Mabry), public domain. Records: NOAA GHCN-Daily, station USW00013958, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.