September weather in Grayson, KY
The average temperature in Grayson in September is 66.9°F (53.7°F–80.1°F). Average precipitation: 3.05 inches.
September is a fall month in Grayson, and is warmer than the annual average of 54°F. Daily temperatures swing about 26.4°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 12h 14m. For travel, September is a comfortable month to visit.
Avg High
80.1°F
Avg Low
53.7°F
Precipitation
3.05 in
Daylight
12h 14m
September records in Grayson
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 93.0°F (2012) | 46.0°F (1999) | 1.77 in (2006) |
| September 2 | 93.0°F (2010) | 46.0°F (1999) | 0.59 in (2006) |
| September 3 | 99.0°F (2011) | 51.1°F (1999) | 0.82 in (2014) |
| September 4 | 97.0°F (2011) | 39.9°F (1997) | 0.35 in (2010) |
| September 5 | 93.0°F (2008) | 39.9°F (1997) | 1.41 in (2011) |
| September 6 | 93.9°F (2007) | 41.0°F (1997) | 1.84 in (2011) |
| September 7 | 97.0°F (1998) | 45.0°F (2010) | 0.40 in (2014) |
| September 8 | 96.1°F (2002) | 50.0°F (2005) | 1.81 in (2004) |
| September 9 | 97.0°F (2002) | 39.9°F (1998) | 2.61 in (2004) |
| September 10 | 95.0°F (2002) | 39.9°F (1998) | 0.74 in (1997) |
| September 11 | 95.0°F (2002) | 39.9°F (1998) | 0.78 in (2007) |
| September 12 | 90.0°F (2013) | 41.0°F (1999) | 0.37 in (2014) |
| September 13 | 91.0°F (1998) | 44.1°F (2002) | 0.44 in (2006) |
| September 14 | 93.9°F (1998) | 44.1°F (1996) | 0.32 in (2006) |
| September 15 | 97.0°F (1998) | 39.9°F (1996) | 0.36 in (2002) |
| September 16 | 93.0°F (1998) | 37.9°F (2007) | 0.94 in (2002) |
| September 17 | 90.0°F (1998) | 36.0°F (2000) | 2.30 in (2004) |
| September 18 | 84.9°F (1998) | 36.0°F (2000) | 2.29 in (2012) |
| September 19 | 87.1°F (1998) | 39.9°F (1999) | 1.02 in (2006) |
| September 20 | 88.0°F (1998) | 39.0°F (2012) | 1.03 in (2011) |
| September 21 | 91.9°F (1998) | 39.0°F (2006) | 0.39 in (1997) |
| September 22 | 91.0°F (2010) | 36.0°F (1999) | 0.79 in (2013) |
| September 23 | 93.0°F (2010) | 34.0°F (2012) | 2.30 in (2006) |
| September 24 | 95.0°F (2010) | 34.0°F (2012) | 1.20 in (2000) |
| September 25 | 96.1°F (2007) | 34.0°F (2012) | 0.68 in (2000) |
| September 26 | 95.0°F (2007) | 39.9°F (2001) | 0.92 in (2000) |
| September 27 | 91.0°F (1998) | 39.0°F (2001) | 1.96 in (2002) |
| September 28 | 91.9°F (1998) | 37.9°F (2000) | 1.17 in (2010) |
| September 29 | 88.0°F (1999) | 37.0°F (2001) | 0.83 in (2012) |
| September 30 | 89.1°F (1998) | 34.0°F (2003) | 0.24 in (1999) |