September weather in Helotes, TX
The average temperature in Helotes in September is 81.4°F (70.2°F–92.7°F). Average precipitation: 3.14 inches.
September is a fall month in Helotes, and is warmer than the annual average of 71.2°F. Daily temperatures swing about 22.5°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
92.7°F
Avg Low
70.2°F
Precipitation
3.14 in
Daylight
12h 10m
September records in Helotes
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 104.0°F (2000) | 70.0°F (1993) | 0.19 in (1994) |
| September 2 | 105.1°F (2000) | 66.9°F (1990) | 0.62 in (2001) |
| September 3 | 106.0°F (2000) | 64.9°F (2004) | 1.58 in (2003) |
| September 4 | 109.9°F (2000) | 61.0°F (2004) | 1.58 in (2003) |
| September 5 | 113.0°F (2000) | 64.0°F (1988) | 1.85 in (2001) |
| September 6 | 102.0°F (2000) | 57.0°F (2011) | 0.28 in (1991) |
| September 7 | 102.9°F (2000) | 57.0°F (2011) | 1.74 in (1989) |
| September 8 | 98.1°F (1993) | 63.0°F (2011) | 2.01 in (2002) |
| September 9 | 100.0°F (1997) | 60.1°F (2011) | 2.00 in (2002) |
| September 10 | 100.0°F (1999) | 64.0°F (2011) | 2.00 in (2002) |
| September 11 | 100.9°F (2000) | 64.9°F (2011) | 3.44 in (2006) |
| September 12 | 100.9°F (2000) | 64.0°F (2003) | 0.50 in (2003) |
| September 13 | 100.0°F (2011) | 50.0°F (2002) | 1.55 in (1994) |
| September 14 | 97.0°F (1997) | 60.1°F (1989) | 0.49 in (1995) |
| September 15 | 98.1°F (1997) | 57.0°F (1993) | 0.26 in (1992) |
| September 16 | 99.0°F (2005) | 57.9°F (1989) | 0.46 in (1998) |
| September 17 | 99.0°F (1997) | 57.9°F (2000) | 3.60 in (1988) |
| September 18 | 99.0°F (2005) | 55.0°F (2000) | 0.93 in (1988) |
| September 19 | 99.0°F (2005) | 53.1°F (1991) | 0.65 in (1991) |
| September 20 | 100.0°F (1999) | 53.1°F (1991) | 2.04 in (1995) |
| September 21 | 100.0°F (2005) | 54.0°F (1995) | 0.90 in (1995) |
| September 22 | 100.9°F (2005) | 50.0°F (1995) | 1.30 in (2009) |
| September 23 | 99.0°F (2005) | 45.0°F (2002) | 0.26 in (2009) |
| September 24 | 100.9°F (2005) | 50.0°F (1995) | 0.65 in (2000) |
| September 25 | 106.0°F (2005) | 50.0°F (1995) | 0.15 in (1999) |
| September 26 | 106.0°F (2005) | 50.0°F (1995) | 0.10 in (2003) |
| September 27 | 107.1°F (2005) | 48.9°F (2000) | 0.15 in (2011) |
| September 28 | 104.0°F (2005) | 51.1°F (1996) | 0.00 in (1988) |
| September 29 | 104.0°F (2005) | 50.0°F (1996) | 0.64 in (2011) |
| September 30 | 95.0°F (1997) | 39.9°F (1996) | 0.19 in (1988) |