August weather in Grafton, WV
The average temperature in Grafton in August is 70.2°F (60.0°F–80.4°F). Average precipitation: 4.37 inches.
August is a summer month in Grafton, and is warmer than the annual average of 51.5°F. Daily temperatures swing about 20.4°F between overnight low and afternoon high. Expect about 12 days with precipitation. Daylight averages about 13h 33m. For travel, August is a comfortable month to visit.
Avg High
80.4°F
Avg Low
60.0°F
Precipitation
4.37 in
Daylight
13h 33m
August records in Grafton
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 91.0°F (2024) | 52.0°F (2023) | 1.11 in (2009) |
| August 2 | 90.0°F (2024) | 53.1°F (2023) | 1.06 in (2008) |
| August 3 | 90.0°F (2024) | 54.0°F (2021) | 0.51 in (1948) |
| August 4 | 90.0°F (2002) | 53.1°F (2025) | 1.11 in (1948) |
| August 5 | 91.0°F (2005) | 52.0°F (2013) | 0.49 in (2022) |
| August 6 | 93.0°F (2024) | 50.0°F (2004) | 1.58 in (2012) |
| August 7 | 96.1°F (2024) | 50.0°F (2002) | 1.50 in (2011) |
| August 8 | 93.9°F (2024) | 50.0°F (2002) | 1.60 in (2013) |
| August 9 | 91.0°F (2007) | 50.0°F (2002) | 1.96 in (2013) |
| August 10 | 93.0°F (2021) | 50.0°F (2002) | 1.01 in (2013) |
| August 11 | 89.1°F (2010) | 53.1°F (2008) | 0.98 in (2007) |
| August 12 | 91.0°F (2025) | 52.0°F (2024) | 1.72 in (2014) |
| August 13 | 93.0°F (2005) | 52.0°F (2006) | 2.06 in (2001) |
| August 14 | 93.0°F (2005) | 50.0°F (2013) | 0.23 in (2019) |
| August 15 | 91.0°F (2002) | 48.9°F (2014) | 1.67 in (1949) |
| August 16 | 90.0°F (2025) | 48.0°F (2014) | 1.15 in (2020) |
| August 17 | 91.0°F (2025) | 48.9°F (2014) | 1.15 in (2021) |
| August 18 | 90.0°F (2025) | 53.1°F (2008) | 0.73 in (2015) |
| August 19 | 91.9°F (2019) | 52.0°F (2023) | 1.14 in (1950) |
| August 20 | 91.0°F (2025) | 51.1°F (2020) | 0.76 in (2002) |
| August 21 | 90.0°F (2005) | 46.0°F (2024) | 1.53 in (2007) |
| August 22 | 89.1°F (2019) | 46.9°F (2024) | 1.49 in (2013) |
| August 23 | 89.1°F (2025) | 48.0°F (2024) | 2.75 in (2017) |
| August 24 | 89.1°F (2007) | 48.0°F (2024) | 0.51 in (2010) |
| August 25 | 91.9°F (2007) | 51.1°F (2018) | 1.34 in (2023) |
| August 26 | 91.9°F (2021) | 50.0°F (2019) | 1.18 in (2011) |
| August 27 | 93.0°F (2024) | 50.0°F (2025) | 0.81 in (1951) |
| August 28 | 93.9°F (2024) | 46.0°F (2025) | 1.05 in (2005) |
| August 29 | 97.0°F (2024) | 46.9°F (2025) | 1.06 in (2006) |
| August 30 | 93.0°F (2024) | 46.0°F (2025) | 1.78 in (2023) |
| August 31 | 95.0°F (2024) | 45.0°F (2025) | 1.00 in (2003) |