August weather in Vernonia, OR
The average temperature in Vernonia in August is 62.5°F (46.9°F–78.2°F). Average precipitation: 0.55 inches.
August is a summer month in Vernonia, and is warmer than the annual average of 49.4°F. Daily temperatures swing about 31.3°F between overnight low and afternoon high. Expect about 4 days with precipitation. Daylight averages about 13h 57m. For travel, August is a comfortable month to visit.
Avg High
78.2°F
Avg Low
46.9°F
Precipitation
0.55 in
Daylight
13h 57m
August records in Vernonia
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 96.1°F (2024) | 37.0°F (2002) | 0.71 in (1985) |
| August 2 | 100.0°F (2017) | 36.0°F (2002) | 0.63 in (1989) |
| August 3 | 102.0°F (2017) | 37.0°F (2006) | 0.13 in (1982) |
| August 4 | 97.0°F (1990) | 39.0°F (1979) | 0.11 in (1989) |
| August 5 | 97.0°F (2012) | 41.0°F (1978) | 0.75 in (2002) |
| August 6 | 89.1°F (1977) | 39.0°F (1979) | 0.13 in (2025) |
| August 7 | 97.0°F (2022) | 39.0°F (1988) | 0.40 in (1992) |
| August 8 | 99.0°F (1981) | 39.9°F (2001) | 0.25 in (1970) |
| August 9 | 100.9°F (1978) | 39.9°F (2001) | 0.20 in (1976) |
| August 10 | 100.9°F (1981) | 39.0°F (2000) | 0.55 in (2019) |
| August 11 | 102.0°F (1981) | 37.9°F (2000) | 0.36 in (2003) |
| August 12 | 102.9°F (2021) | 36.0°F (2006) | 0.15 in (2017) |
| August 13 | 102.0°F (1977) | 33.1°F (1987) | 0.83 in (1978) |
| August 14 | 102.9°F (2023) | 36.0°F (2000) | 0.52 in (1999) |
| August 15 | 100.9°F (2023) | 37.9°F (2000) | 0.30 in (1976) |
| August 16 | 102.9°F (2023) | 35.1°F (2000) | 0.50 in (1972) |
| August 17 | 100.0°F (1977) | 33.1°F (1970) | 0.49 in (2024) |
| August 18 | 100.9°F (1977) | 32.0°F (1973) | 0.64 in (2007) |
| August 19 | 99.0°F (2016) | 34.0°F (1973) | 0.45 in (1968) |
| August 20 | 98.1°F (2016) | 36.0°F (1973) | 0.38 in (1968) |
| August 21 | 91.9°F (1986) | 37.0°F (1973) | 0.80 in (2004) |
| August 22 | 96.1°F (2025) | 35.1°F (2003) | 0.45 in (2001) |
| August 23 | 98.1°F (2025) | 36.0°F (1973) | 0.66 in (1968) |
| August 24 | 98.1°F (1988) | 35.1°F (1992) | 1.32 in (1977) |
| August 25 | 97.0°F (1982) | 34.0°F (1992) | 0.66 in (1968) |
| August 26 | 95.0°F (2016) | 35.1°F (1995) | 0.90 in (1977) |
| August 27 | 99.0°F (1986) | 33.1°F (2000) | 0.32 in (1997) |
| August 28 | 100.0°F (1967) | 33.1°F (2000) | 0.45 in (1997) |
| August 29 | 93.9°F (2007) | 36.0°F (1985) | 0.25 in (1983) |
| August 30 | 98.1°F (2022) | 37.9°F (1969) | 0.53 in (1982) |
| August 31 | 97.0°F (2024) | 34.0°F (2021) | 0.65 in (2023) |