September weather in Jonestown, TX
The average temperature in Jonestown in September is 78.0°F (66.5°F–89.4°F). Average precipitation: 3.42 inches.
September is a fall month in Jonestown, and is warmer than the annual average of 67.3°F. Daily temperatures swing about 22.9°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 12h 10m. For travel, September is hot.
Avg High
89.4°F
Avg Low
66.5°F
Precipitation
3.42 in
Daylight
12h 10m
September records in Jonestown
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 102.0°F (2011) | 64.9°F (2017) | 0.83 in (2007) |
| September 2 | 102.0°F (2023) | 64.9°F (2017) | 0.01 in (2024) |
| September 3 | 102.0°F (2011) | 64.9°F (2017) | 0.25 in (2020) |
| September 4 | 102.0°F (2023) | 66.0°F (2017) | 0.90 in (2007) |
| September 5 | 102.0°F (2023) | 64.9°F (2022) | 1.58 in (2020) |
| September 6 | 104.0°F (2023) | 61.0°F (2011) | 0.14 in (2021) |
| September 7 | 102.9°F (2023) | 55.9°F (2017) | 1.12 in (2018) |
| September 8 | 106.0°F (2023) | 55.0°F (2017) | 10.14 in (2010) |
| September 9 | 108.0°F (2023) | 55.0°F (2017) | 0.58 in (2010) |
| September 10 | 102.9°F (2023) | 55.9°F (2020) | 2.42 in (2020) |
| September 11 | 99.0°F (2019) | 55.9°F (2020) | 1.15 in (2007) |
| September 12 | 100.9°F (2011) | 57.9°F (2017) | 3.29 in (2009) |
| September 13 | 104.0°F (2011) | 57.9°F (2014) | 2.51 in (2009) |
| September 14 | 105.1°F (2011) | 57.9°F (2014) | 1.28 in (2023) |
| September 15 | 102.0°F (2011) | 62.1°F (2014) | 0.35 in (2018) |
| September 16 | 99.0°F (2024) | 59.0°F (2008) | 0.34 in (2018) |
| September 17 | 97.0°F (2019) | 57.0°F (2008) | 1.41 in (2012) |
| September 18 | 97.0°F (2024) | 62.1°F (2008) | 1.73 in (2006) |
| September 19 | 97.0°F (2019) | 57.9°F (2008) | 3.04 in (2014) |
| September 20 | 98.1°F (2021) | 57.9°F (2008) | 0.05 in (2013) |
| September 21 | 99.0°F (2021) | 57.9°F (2011) | 2.28 in (2013) |
| September 22 | 97.0°F (2011) | 57.9°F (2012) | 3.26 in (2018) |
| September 23 | 98.1°F (2023) | 52.0°F (2021) | 0.16 in (2009) |
| September 24 | 99.0°F (2023) | 52.0°F (2021) | 0.30 in (2009) |
| September 25 | 102.0°F (2023) | 55.9°F (2011) | 0.33 in (2023) |
| September 26 | 104.0°F (2011) | 57.9°F (2009) | 0.90 in (2016) |
| September 27 | 102.0°F (2011) | 54.0°F (2010) | 1.70 in (2017) |
| September 28 | 96.1°F (2011) | 50.0°F (2010) | 0.42 in (2017) |
| September 29 | 100.9°F (2011) | 50.0°F (2010) | 4.13 in (2021) |
| September 30 | 100.9°F (2011) | 51.1°F (2020) | 0.99 in (2012) |