August weather in Granite Falls, WA
The average temperature in Granite Falls in August is 62.4°F (47.1°F–77.7°F). Average precipitation: 1.34 inches.
August is a summer month in Granite Falls, and is warmer than the annual average of 49.1°F. Daily temperatures swing about 30.6°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 14h 7m. For travel, August is a comfortable month to visit.
Avg High
77.7°F
Avg Low
47.1°F
Precipitation
1.34 in
Daylight
14h 7m
August records in Granite Falls
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 96.1°F (2015) | 45.0°F (2011) | 0.26 in (2013) |
| August 2 | 90.0°F (2015) | 48.0°F (2012) | 0.36 in (1964) |
| August 3 | 91.9°F (2017) | 46.0°F (2016) | 0.33 in (1941) |
| August 4 | 93.9°F (2012) | 41.0°F (2016) | 0.63 in (2002) |
| August 5 | 91.9°F (2012) | 46.9°F (2013) | 1.11 in (1962) |
| August 6 | 84.9°F (2018) | 45.0°F (2015) | 1.50 in (1995) |
| August 7 | 91.9°F (2018) | 46.0°F (2016) | 0.97 in (1985) |
| August 8 | 93.9°F (2018) | 45.0°F (2014) | 0.82 in (1976) |
| August 9 | 93.0°F (1978) | 46.0°F (2014) | 0.60 in (1944) |
| August 10 | 90.0°F (2018) | 48.0°F (2012) | 1.29 in (1982) |
| August 11 | 96.1°F (2014) | 46.9°F (2015) | 0.63 in (2019) |
| August 12 | 90.0°F (2016) | 43.0°F (2020) | 0.78 in (1982) |
| August 13 | 90.0°F (2016) | 39.9°F (2017) | 0.50 in (1987) |
| August 14 | 86.0°F (2012) | 39.9°F (2017) | 0.95 in (2015) |
| August 15 | 89.1°F (2012) | 39.9°F (2017) | 0.93 in (1978) |
| August 16 | 102.9°F (2020) | 42.1°F (2015) | 0.99 in (1972) |
| August 17 | 91.9°F (2012) | 45.0°F (2015) | 0.64 in (1959) |
| August 18 | 89.1°F (2016) | 44.1°F (2017) | 1.56 in (1926) |
| August 19 | 93.0°F (2016) | 43.0°F (2015) | 1.46 in (1963) |
| August 20 | 91.0°F (2016) | 43.0°F (2017) | 0.87 in (1976) |
| August 21 | 88.0°F (2018) | 44.1°F (2015) | 0.75 in (2001) |
| August 22 | 89.1°F (2018) | 42.1°F (2016) | 1.42 in (1971) |
| August 23 | 82.0°F (2014) | 43.0°F (2015) | 0.94 in (1975) |
| August 24 | 84.9°F (2016) | 41.0°F (2015) | 1.32 in (1977) |
| August 25 | 89.1°F (2016) | 39.0°F (2017) | 0.72 in (1945) |
| August 26 | 93.9°F (2016) | 42.1°F (2017) | 1.98 in (1926) |
| August 27 | 89.1°F (2017) | 42.1°F (2017) | 1.05 in (1980) |
| August 28 | 89.1°F (2017) | 45.0°F (2011) | 0.99 in (1951) |
| August 29 | 91.0°F (2017) | 44.1°F (2020) | 0.75 in (1983) |
| August 30 | 82.0°F (2013) | 43.0°F (2012) | 1.15 in (1926) |
| August 31 | 82.9°F (2019) | 43.0°F (2011) | 1.22 in (2010) |