August weather in Plainfield, NJ
The average temperature in Plainfield in August is 75.0°F (64.0°F–86.0°F). Average precipitation: 3.99 inches.
August is a summer month in Plainfield, and is warmer than the annual average of 54.8°F. Daily temperatures swing about 22°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 13h 37m. For travel, August is a comfortable month to visit.
Avg High
86.0°F
Avg Low
64.0°F
Precipitation
3.99 in
Daylight
13h 37m
August records in Plainfield
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 100.9°F (1955) | 51.1°F (1895) | 3.37 in (1927) |
| August 2 | 102.9°F (1955) | 52.0°F (1912) | 7.09 in (1973) |
| August 3 | 100.0°F (2005) | 48.9°F (1924) | 2.28 in (1967) |
| August 4 | 100.9°F (2005) | 51.1°F (1964) | 3.96 in (1915) |
| August 5 | 100.0°F (1944) | 48.9°F (1912) | 3.07 in (1904) |
| August 6 | 98.1°F (1896) | 46.9°F (1934) | 2.00 in (1990) |
| August 7 | 98.1°F (2001) | 50.0°F (1948) | 1.45 in (1901) |
| August 8 | 99.0°F (1909) | 45.0°F (1903) | 2.68 in (1927) |
| August 9 | 105.1°F (1949) | 46.9°F (1899) | 4.95 in (1942) |
| August 10 | 105.1°F (1949) | 48.9°F (1964) | 2.45 in (1976) |
| August 11 | 106.0°F (1949) | 46.9°F (1972) | 3.79 in (1937) |
| August 12 | 99.0°F (1944) | 44.1°F (1930) | 3.70 in (1955) |
| August 13 | 100.0°F (2002) | 46.0°F (1930) | 3.94 in (1955) |
| August 14 | 99.0°F (2002) | 46.0°F (1964) | 2.30 in (1927) |
| August 15 | 99.0°F (1988) | 46.0°F (1964) | 6.94 in (1969) |
| August 16 | 98.1°F (1944) | 46.9°F (1927) | 4.92 in (1909) |
| August 17 | 97.0°F (1944) | 45.0°F (1979) | 2.43 in (1993) |
| August 18 | 98.1°F (2002) | 48.0°F (1915) | 1.21 in (1920) |
| August 19 | 96.1°F (2002) | 48.0°F (1958) | 2.12 in (1955) |
| August 20 | 98.1°F (1983) | 45.0°F (1949) | 3.21 in (1904) |
| August 21 | 96.1°F (1937) | 44.1°F (1922) | 1.40 in (1956) |
| August 22 | 96.1°F (1976) | 44.1°F (1982) | 1.50 in (1937) |
| August 23 | 93.9°F (1916) | 41.0°F (1923) | 2.22 in (1970) |
| August 24 | 93.0°F (1895) | 44.1°F (1952) | 3.83 in (1901) |
| August 25 | 93.9°F (1947) | 44.1°F (1940) | 2.03 in (1941) |
| August 26 | 100.9°F (1948) | 46.9°F (1944) | 4.08 in (1908) |
| August 27 | 100.0°F (1948) | 46.0°F (1944) | 5.35 in (1971) |
| August 28 | 100.0°F (1948) | 46.0°F (1912) | 9.07 in (2011) |
| August 29 | 99.0°F (1953) | 39.9°F (1986) | 1.85 in (2002) |
| August 30 | 100.0°F (1953) | 43.0°F (1965) | 1.01 in (1911) |
| August 31 | 100.9°F (1953) | 41.0°F (1976) | 3.75 in (1911) |