September weather in Rio Hondo, TX
The average temperature in Rio Hondo in September is 82.3°F (72.5°F–92.2°F). Average precipitation: 5.31 inches.
September is a fall month in Rio Hondo, and is warmer than the annual average of 75°F. Daily temperatures swing about 19.7°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 12h 9m. For travel, September is a wet month.
Avg High
92.2°F
Avg Low
72.5°F
Precipitation
5.31 in
Daylight
12h 9m
September records in Rio Hondo
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 102.0°F (2000) | 72.0°F (1997) | 0.87 in (1958) |
| September 2 | 102.0°F (2018) | 69.1°F (2006) | 1.08 in (2013) |
| September 3 | 106.0°F (2011) | 71.1°F (1954) | 1.39 in (1960) |
| September 4 | 107.1°F (2011) | 72.0°F (2006) | 1.48 in (2024) |
| September 5 | 107.1°F (2000) | 66.9°F (1952) | 2.29 in (2020) |
| September 6 | 102.9°F (2000) | 64.9°F (2011) | 1.56 in (1998) |
| September 7 | 100.9°F (2023) | 62.1°F (2011) | 1.90 in (1999) |
| September 8 | 102.9°F (2023) | 61.0°F (2011) | 5.00 in (1955) |
| September 9 | 102.0°F (2023) | 64.0°F (2011) | 3.91 in (1998) |
| September 10 | 102.0°F (2023) | 64.0°F (2017) | 1.82 in (2024) |
| September 11 | 100.0°F (2000) | 64.9°F (2017) | 2.95 in (2015) |
| September 12 | 100.9°F (2011) | 64.0°F (2017) | 6.25 in (2018) |
| September 13 | 100.0°F (2011) | 64.9°F (1960) | 3.39 in (2014) |
| September 14 | 100.9°F (2023) | 68.0°F (1959) | 4.27 in (1961) |
| September 15 | 100.9°F (2023) | 66.9°F (1960) | 3.25 in (2024) |
| September 16 | 102.0°F (2000) | 64.9°F (2008) | 2.43 in (2023) |
| September 17 | 98.1°F (2011) | 62.1°F (2008) | 3.61 in (2004) |
| September 18 | 100.0°F (2011) | 64.9°F (1961) | 1.69 in (2006) |
| September 19 | 99.0°F (2017) | 64.9°F (1999) | 4.30 in (2003) |
| September 20 | 98.1°F (2017) | 64.9°F (1999) | 0.39 in (2013) |
| September 21 | 98.1°F (2011) | 61.0°F (2012) | 0.69 in (2014) |
| September 22 | 99.0°F (2023) | 63.0°F (1999) | 0.82 in (1998) |
| September 23 | 100.9°F (2005) | 59.0°F (1999) | 1.02 in (2002) |
| September 24 | 102.9°F (2005) | 60.1°F (2021) | 1.90 in (1960) |
| September 25 | 102.0°F (2011) | 63.0°F (2000) | 0.52 in (1958) |
| September 26 | 100.0°F (2011) | 57.9°F (2000) | 0.21 in (2009) |
| September 27 | 100.0°F (2005) | 53.1°F (2000) | 2.12 in (2014) |
| September 28 | 102.0°F (2005) | 57.0°F (2000) | 1.96 in (2007) |
| September 29 | 98.1°F (2005) | 57.9°F (2000) | 0.59 in (2014) |
| September 30 | 97.0°F (2005) | 57.0°F (2000) | 0.25 in (1954) |