August weather in Allentown, PA
The average temperature in Allentown in August is 73.6°F (62.8°F–84.3°F). Average precipitation: 4.56 inches.
August is a summer month in Allentown, and is warmer than the annual average of 53.1°F. Daily temperatures swing about 21.5°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
84.3°F
Avg Low
62.8°F
Precipitation
4.56 in
Daylight
13h 37m
August records in Allentown
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 98.1°F (1955) | 52.0°F (1964) | 2.06 in (2000) |
| August 2 | 100.0°F (1955) | 51.1°F (2023) | 1.62 in (2020) |
| August 3 | 96.1°F (1957) | 51.1°F (1953) | 1.77 in (1971) |
| August 4 | 96.1°F (2005) | 50.0°F (1966) | 5.48 in (2020) |
| August 5 | 100.0°F (1955) | 46.0°F (1951) | 1.77 in (1948) |
| August 6 | 97.0°F (1955) | 46.9°F (1951) | 2.42 in (1990) |
| August 7 | 93.0°F (1968) | 48.9°F (1964) | 1.85 in (1978) |
| August 8 | 95.0°F (1980) | 48.9°F (1989) | 4.19 in (1982) |
| August 9 | 98.1°F (2001) | 50.0°F (1989) | 3.01 in (1987) |
| August 10 | 99.0°F (1949) | 51.1°F (1964) | 1.33 in (1960) |
| August 11 | 97.0°F (1949) | 46.9°F (1972) | 1.70 in (1978) |
| August 12 | 96.1°F (2002) | 50.0°F (1954) | 2.17 in (1955) |
| August 13 | 98.1°F (2002) | 48.9°F (2006) | 3.63 in (1955) |
| August 14 | 99.0°F (2002) | 48.9°F (1964) | 0.73 in (1981) |
| August 15 | 97.0°F (1988) | 48.0°F (1964) | 1.34 in (1951) |
| August 16 | 93.9°F (1965) | 50.0°F (2014) | 1.62 in (1966) |
| August 17 | 95.0°F (2002) | 46.0°F (1979) | 2.92 in (1974) |
| August 18 | 95.0°F (2002) | 46.9°F (1981) | 3.34 in (1955) |
| August 19 | 91.9°F (1955) | 48.0°F (1963) | 0.46 in (1969) |
| August 20 | 96.1°F (1983) | 46.9°F (1998) | 1.80 in (1997) |
| August 21 | 93.0°F (1995) | 45.0°F (2000) | 2.43 in (2018) |
| August 22 | 91.9°F (1976) | 46.0°F (1988) | 2.56 in (2022) |
| August 23 | 91.0°F (1996) | 48.0°F (1957) | 1.32 in (1970) |
| August 24 | 91.0°F (1968) | 46.9°F (1952) | 1.52 in (1972) |
| August 25 | 95.0°F (1948) | 45.0°F (1971) | 1.30 in (1967) |
| August 26 | 99.0°F (1948) | 48.0°F (1956) | 1.20 in (1999) |
| August 27 | 98.1°F (1948) | 46.9°F (1969) | 3.12 in (1971) |
| August 28 | 97.0°F (1948) | 46.0°F (1968) | 3.37 in (2011) |
| August 29 | 97.0°F (1953) | 43.0°F (1982) | 1.26 in (2013) |
| August 30 | 97.0°F (1953) | 41.0°F (1986) | 1.30 in (1954) |
| August 31 | 99.0°F (1953) | 43.0°F (1976) | 2.58 in (1954) |