Aransas County Weather in September
Average highs run from 93°F on September 1 to 88°F on September 30, and lows from 77°F to 71°F. Normal precipitation for the month is 5.65 in over about 10 wet days.
September day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
September at a glance
- Average high
- 91°F
- Average low
- 75°F
- Precipitation
- 5.65 in
- Record high
- 107°FSep 5, 2000
- Record low
- 52°FSep 30, 2020
- Chance of a freeze
- 0%
- Days of 90°F or more
- 17.7
- Daylight
- 12 h 42 min to 11 h 54 min
- Cloud cover
- 47%
- Humidity
- 76%
- Dew point
- 74°F
- Wind
- 11.2 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.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Sep 1 | 93°F | 77°F | 100°F 2008 | 72°F 1996 | 28% | 0% |
| Sep 2 | 93°F | 77°F | 99°F 2008 | 72°F 2004 | 29% | 0% |
| Sep 3 | 92°F | 77°F | 105°F 2011 | 72°F 2009 | 29% | 0% |
| Sep 4 | 92°F | 77°F | 104°F 2011 | 73°F 2009 | 29% | 0% |
| Sep 5 | 92°F | 77°F | 107°F 2000 | 73°F 2000 | 30% | 0% |
| Sep 6 | 92°F | 77°F | 96°F 2023 | 68°F 2011 | 30% | 0% |
| Sep 7 | 92°F | 76°F | 96°F 2023 | 65°F 2011 | 30% | 0% |
| Sep 8 | 92°F | 76°F | 97°F 2012 | 68°F 2011 | 31% | 0% |
| Sep 9 | 92°F | 76°F | 96°F 2023 | 69°F 2011 | 31% | 0% |
| Sep 10 | 92°F | 76°F | 96°F 2023 | 68°F 2012 | 31% | 0% |
| Sep 11 | 91°F | 76°F | 95°F 2008 | 68°F 2017 | 31% | 0% |
| Sep 12 | 91°F | 75°F | 98°F 2008 | 64°F 2017 | 31% | 0% |
| Sep 13 | 91°F | 75°F | 100°F 2008 | 69°F 2003 | 31% | 0% |
| Sep 14 | 91°F | 75°F | 95°F 2019 | 69°F 2014 | 31% | 0% |
| Sep 15 | 91°F | 75°F | 95°F 2009 | 69°F 2009 | 31% | 0% |
| Sep 16 | 91°F | 75°F | 96°F 2009 | 65°F 2008 | 30% | 0% |
| Sep 17 | 91°F | 74°F | 94°F 2009 | 65°F 2008 | 30% | 0% |
| Sep 18 | 90°F | 74°F | 94°F 2005 | 65°F 2008 | 30% | 0% |
| Sep 19 | 90°F | 74°F | 95°F 2009 | 67°F 2008 | 30% | 0% |
| Sep 20 | 90°F | 74°F | 95°F 2019 | 65°F 2002 | 29% | 0% |
| Sep 21 | 90°F | 73°F | 97°F 2005 | 63°F 2002 | 29% | 0% |
| Sep 22 | 90°F | 73°F | 98°F 2005 | 61°F 1999 | 29% | 0% |
| Sep 23 | 89°F | 73°F | 101°F 2005 | 58°F 1999 | 28% | 0% |
| Sep 24 | 89°F | 73°F | 103°F 2005 | 62°F 1999 | 28% | 0% |
| Sep 25 | 89°F | 73°F | 94°F 2005 | 62°F 2000 | 27% | 0% |
| Sep 26 | 89°F | 72°F | 99°F 2022 | 55°F 2000 | 27% | 0% |
| Sep 27 | 89°F | 72°F | 95°F 2005 | 58°F 2000 | 26% | 0% |
| Sep 28 | 88°F | 72°F | 94°F 1998 | 58°F 1996 | 26% | 0% |
| Sep 29 | 88°F | 72°F | 95°F 2005 | 54°F 2020 | 26% | 0% |
| Sep 30 | 88°F | 71°F | 93°F 2015 | 52°F 2020 | 25% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CDT).
- September 1
- sunrise 7:07 AM, sunset 7:49 PM
- September 30
- sunrise 7:21 AM, sunset 7:15 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00417704 (Rockport), public domain. Records: NOAA GHCN-Daily, station USW00012972, 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.