September weather in Grundy, VA
The average temperature in Grundy in September is 66.6°F (56.1°F–77.1°F). Average precipitation: 3.16 inches.
September is a fall month in Grundy, and is warmer than the annual average of 54°F. Daily temperatures swing about 21°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 12h 14m. For travel, September is one of the best months of the year to visit.
Avg High
77.1°F
Avg Low
56.1°F
Precipitation
3.16 in
Daylight
12h 14m
September records in Grundy
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 100.0°F (1995) | 46.9°F (1999) | 1.92 in (2020) |
| September 2 | 93.0°F (1997) | 46.0°F (1987) | 0.71 in (1986) |
| September 3 | 96.1°F (1999) | 39.0°F (1995) | 2.00 in (1943) |
| September 4 | 97.0°F (1999) | 42.1°F (1995) | 1.45 in (1963) |
| September 5 | 99.0°F (1999) | 43.0°F (1995) | 1.61 in (2006) |
| September 6 | 97.0°F (1998) | 39.0°F (1995) | 3.44 in (2011) |
| September 7 | 95.0°F (1998) | 43.0°F (1995) | 1.56 in (1981) |
| September 8 | 95.0°F (1965) | 44.1°F (2024) | 0.92 in (2004) |
| September 9 | 95.0°F (1995) | 39.9°F (2024) | 1.09 in (2004) |
| September 10 | 97.0°F (1965) | 41.0°F (2024) | 1.10 in (1976) |
| September 11 | 93.9°F (1965) | 42.1°F (2024) | 1.54 in (1960) |
| September 12 | 93.0°F (1961) | 44.1°F (1993) | 1.10 in (2014) |
| September 13 | 93.0°F (1998) | 46.0°F (1985) | 1.48 in (1974) |
| September 14 | 97.0°F (1998) | 39.0°F (1985) | 1.41 in (1951) |
| September 15 | 102.0°F (1998) | 42.1°F (1975) | 1.24 in (1982) |
| September 16 | 95.0°F (1998) | 42.1°F (2007) | 0.99 in (1981) |
| September 17 | 93.9°F (1998) | 39.9°F (1984) | 1.41 in (2004) |
| September 18 | 93.9°F (1965) | 37.9°F (1990) | 2.25 in (2012) |
| September 19 | 93.9°F (1965) | 45.0°F (1984) | 1.51 in (2016) |
| September 20 | 93.0°F (1965) | 42.1°F (2020) | 1.40 in (1954) |
| September 21 | 96.1°F (1965) | 39.9°F (2020) | 0.54 in (1958) |
| September 22 | 91.9°F (1965) | 39.9°F (1983) | 1.80 in (1979) |
| September 23 | 90.0°F (1961) | 36.0°F (1995) | 1.80 in (1989) |
| September 24 | 93.9°F (1961) | 30.0°F (1990) | 1.30 in (2006) |
| September 25 | 91.9°F (1961) | 35.1°F (1983) | 1.43 in (2024) |
| September 26 | 90.0°F (1999) | 39.0°F (1990) | 1.87 in (2024) |
| September 27 | 93.9°F (1998) | 39.9°F (1989) | 2.09 in (2009) |
| September 28 | 89.1°F (1998) | 37.0°F (1989) | 2.30 in (1972) |
| September 29 | 91.9°F (1998) | 37.9°F (1995) | 1.37 in (1996) |
| September 30 | 90.0°F (1998) | 35.1°F (1992) | 1.60 in (1972) |