August weather in Sunnyvale, CA
The average temperature in Sunnyvale in August is 68.0°F (59.0°F–76.9°F). Average precipitation: 0.01 inches.
August is a summer month in Sunnyvale, and is warmer than the annual average of 59.9°F. Daily temperatures swing about 17.9°F between overnight low and afternoon high. Expect about 0 days with precipitation. Daylight averages about 13h 26m. For travel, August is one of the best months of the year to visit.
Avg High
76.9°F
Avg Low
59.0°F
Precipitation
0.01 in
Daylight
13h 26m
August records in Sunnyvale
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 100.9°F (1993) | 1.2°F (2010) | 0.00 in (1945) |
| August 2 | 95.0°F (1946) | 3.2°F (2010) | 0.00 in (1945) |
| August 3 | 95.0°F (1998) | 48.9°F (1954) | 0.01 in (1953) |
| August 4 | 93.0°F (1998) | 48.9°F (1949) | 0.00 in (1945) |
| August 5 | 89.1°F (1978) | 46.9°F (1946) | 0.01 in (2009) |
| August 6 | 95.0°F (1983) | 48.9°F (1950) | 0.02 in (2009) |
| August 7 | 97.0°F (1984) | 48.9°F (1947) | 0.00 in (1945) |
| August 8 | 93.9°F (2002) | 48.9°F (1949) | 0.02 in (1963) |
| August 9 | 96.1°F (2002) | 50.0°F (1948) | 0.00 in (1945) |
| August 10 | 91.0°F (2009) | 50.0°F (1947) | 0.00 in (1945) |
| August 11 | 88.0°F (1998) | 50.0°F (1947) | 0.19 in (1965) |
| August 12 | 91.0°F (1998) | 48.9°F (1945) | 0.01 in (2008) |
| August 13 | 93.0°F (1991) | 50.0°F (1946) | 0.09 in (1991) |
| August 14 | 95.0°F (2019) | 48.0°F (1955) | 0.05 in (1976) |
| August 15 | 95.0°F (2015) | 50.0°F (1954) | 0.17 in (1976) |
| August 16 | 97.0°F (2015) | 51.1°F (1948) | 0.00 in (1945) |
| August 17 | 84.9°F (1950) | 50.0°F (1956) | 0.06 in (1976) |
| August 18 | 90.0°F (1978) | 51.1°F (1949) | 0.53 in (1975) |
| August 19 | 89.1°F (1964) | 51.1°F (1957) | 0.13 in (1976) |
| August 20 | 88.0°F (1974) | 50.0°F (1948) | 0.00 in (1945) |
| August 21 | 87.1°F (1993) | 51.1°F (1947) | 0.01 in (1968) |
| August 22 | 91.9°F (1999) | 46.9°F (1947) | 0.00 in (1945) |
| August 23 | 93.0°F (2010) | 52.0°F (1949) | 0.00 in (1945) |
| August 24 | 100.0°F (2010) | 50.0°F (1955) | 0.03 in (1971) |
| August 25 | 93.0°F (1988) | 48.9°F (1953) | 0.00 in (1945) |
| August 26 | 93.9°F (1993) | 50.0°F (1955) | 0.03 in (1961) |
| August 27 | 98.1°F (1993) | 50.0°F (1960) | 0.11 in (1949) |
| August 28 | 100.9°F (2009) | 50.0°F (1957) | 0.00 in (1945) |
| August 29 | 100.0°F (1977) | 51.1°F (1945) | 0.03 in (1953) |
| August 30 | 90.0°F (2005) | 46.9°F (1955) | 0.03 in (1966) |
| August 31 | 93.9°F (2005) | 50.0°F (1946) | 0.10 in (1964) |