September weather in Grayson, LA
The average temperature in Grayson in September is 76.9°F (65.9°F–88.0°F). Average precipitation: 3.57 inches.
September is a fall month in Grayson, and is warmer than the annual average of 65.5°F. Daily temperatures swing about 22.1°F between overnight low and afternoon high. Expect about 5 days with precipitation. Daylight averages about 12h 11m. For travel, September is hot.
Avg High
88.0°F
Avg Low
65.9°F
Precipitation
3.57 in
Daylight
12h 11m
September records in Grayson
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 100.9°F (2011) | 60.1°F (2009) | 1.50 in (1998) |
| September 2 | 106.0°F (2000) | 57.9°F (2009) | 3.20 in (2008) |
| September 3 | 104.0°F (2000) | 57.9°F (2009) | 5.50 in (2008) |
| September 4 | 104.0°F (2000) | 64.9°F (2009) | 1.20 in (2011) |
| September 5 | 105.1°F (2000) | 57.9°F (2010) | 1.92 in (2011) |
| September 6 | 99.0°F (1999) | 55.9°F (2011) | 2.37 in (1973) |
| September 7 | 99.0°F (2019) | 52.0°F (2011) | 0.30 in (1975) |
| September 8 | 100.0°F (2019) | 52.0°F (2011) | 0.71 in (1973) |
| September 9 | 100.9°F (2019) | 54.0°F (2011) | 1.77 in (2018) |
| September 10 | 98.1°F (2010) | 54.0°F (2011) | 1.38 in (1997) |
| September 11 | 99.0°F (2010) | 57.9°F (1999) | 2.00 in (1988) |
| September 12 | 98.1°F (2010) | 59.0°F (1999) | 3.22 in (2024) |
| September 13 | 97.0°F (2019) | 54.0°F (2015) | 2.15 in (1998) |
| September 14 | 100.0°F (2019) | 54.0°F (2015) | 1.50 in (2007) |
| September 15 | 100.0°F (2019) | 54.0°F (2015) | 3.26 in (1974) |
| September 16 | 100.0°F (2019) | 51.1°F (2006) | 0.52 in (1996) |
| September 17 | 98.1°F (2010) | 53.1°F (2000) | 2.00 in (1994) |
| September 18 | 98.1°F (2010) | 53.1°F (2000) | 2.33 in (1979) |
| September 19 | 100.0°F (2010) | 52.0°F (2000) | 0.49 in (2006) |
| September 20 | 100.0°F (2005) | 51.1°F (2000) | 1.80 in (1979) |
| September 21 | 100.0°F (2005) | 52.0°F (1999) | 2.90 in (1979) |
| September 22 | 99.0°F (2005) | 52.0°F (1999) | 2.10 in (1992) |
| September 23 | 97.0°F (2005) | 48.0°F (1999) | 0.74 in (2020) |
| September 24 | 97.0°F (2000) | 48.0°F (1999) | 3.28 in (2020) |
| September 25 | 97.0°F (2010) | 48.0°F (1999) | 2.95 in (1997) |
| September 26 | 93.9°F (2005) | 48.0°F (2001) | 1.63 in (1974) |
| September 27 | 96.1°F (2005) | 46.9°F (2001) | 1.63 in (1996) |
| September 28 | 95.0°F (2023) | 48.9°F (2001) | 1.45 in (1972) |
| September 29 | 95.0°F (2019) | 50.0°F (2006) | 1.15 in (1999) |
| September 30 | 96.1°F (2019) | 48.9°F (2006) | 2.30 in (2012) |