October weather in Herndon, VA
The average temperature in Herndon in October is 56.6°F (45.3°F–67.8°F). Average precipitation: 3.65 inches.
October is a fall month in Herndon, and is warmer than the annual average of 55.7°F. Daily temperatures swing about 22.5°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 10h 57m. For travel, October is a comfortable month to visit.
Avg High
67.8°F
Avg Low
45.3°F
Precipitation
3.65 in
Daylight
10h 57m
October records in Herndon
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| October 1 | 90.0°F (1986) | 30.9°F (1993) | 4.06 in (1979) |
| October 2 | 96.1°F (2019) | 32.0°F (1997) | 2.35 in (2012) |
| October 3 | 86.0°F (2002) | 30.0°F (1974) | 0.86 in (1987) |
| October 4 | 90.0°F (2013) | 26.1°F (1974) | 0.81 in (1999) |
| October 5 | 90.0°F (1967) | 32.0°F (1970) | 2.04 in (1971) |
| October 6 | 89.1°F (2013) | 28.0°F (1968) | 1.05 in (2006) |
| October 7 | 91.0°F (2007) | 30.9°F (1988) | 3.50 in (2005) |
| October 8 | 91.9°F (2007) | 30.0°F (2001) | 2.79 in (2005) |
| October 9 | 93.9°F (2007) | 26.1°F (2001) | 2.53 in (1976) |
| October 10 | 87.1°F (2017) | 30.9°F (1972) | 2.22 in (2013) |
| October 11 | 86.0°F (2010) | 28.0°F (1972) | 3.38 in (2013) |
| October 12 | 82.9°F (1995) | 25.0°F (1964) | 0.78 in (1990) |
| October 13 | 84.0°F (1989) | 30.0°F (1987) | 1.92 in (2011) |
| October 14 | 86.0°F (1975) | 23.0°F (1988) | 1.61 in (1995) |
| October 15 | 88.0°F (1989) | 28.0°F (1987) | 1.30 in (2014) |
| October 16 | 84.9°F (1989) | 30.0°F (1986) | 1.10 in (2002) |
| October 17 | 84.0°F (2016) | 30.9°F (1981) | 1.11 in (1975) |
| October 18 | 84.9°F (2016) | 27.0°F (1976) | 2.09 in (1996) |
| October 19 | 87.1°F (2016) | 25.0°F (1976) | 1.36 in (1966) |
| October 20 | 82.9°F (1969) | 19.9°F (1972) | 1.44 in (2019) |
| October 21 | 86.0°F (1979) | 21.9°F (1972) | 2.45 in (1995) |
| October 22 | 84.9°F (1979) | 26.1°F (1974) | 0.90 in (1985) |
| October 23 | 84.9°F (1978) | 21.0°F (1969) | 2.63 in (1990) |
| October 24 | 84.0°F (2001) | 15.1°F (1969) | 1.69 in (2009) |
| October 25 | 81.0°F (2023) | 27.0°F (1969) | 3.39 in (1971) |
| October 26 | 84.0°F (2023) | 26.1°F (1972) | 1.76 in (1977) |
| October 27 | 84.0°F (1963) | 21.0°F (1988) | 1.89 in (2003) |
| October 28 | 86.0°F (2023) | 21.9°F (1976) | 1.97 in (2015) |
| October 29 | 82.0°F (1984) | 19.0°F (1976) | 4.26 in (2012) |
| October 30 | 84.0°F (2016) | 19.9°F (1969) | 1.00 in (2012) |
| October 31 | 82.9°F (2024) | 21.0°F (1968) | 1.35 in (2019) |