August weather in Harper, IA
The average temperature in Harper in August is 71.6°F (60.4°F–82.8°F). Average precipitation: 4.76 inches.
August is a summer month in Harper, and is warmer than the annual average of 48.9°F. Daily temperatures swing about 22.4°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 13h 40m. For travel, August is a comfortable month to visit.
Avg High
82.8°F
Avg Low
60.4°F
Precipitation
4.76 in
Daylight
13h 40m
August records in Harper
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 104.0°F (1988) | 52.0°F (1920) | 1.80 in (1896) |
| August 2 | 100.9°F (1947) | 46.0°F (1920) | 2.01 in (2010) |
| August 3 | 109.9°F (1930) | 46.0°F (1927) | 4.25 in (1943) |
| August 4 | 109.0°F (1918) | 48.0°F (1971) | 2.45 in (1994) |
| August 5 | 105.1°F (1918) | 46.9°F (2020) | 2.80 in (2007) |
| August 6 | 102.9°F (1934) | 50.0°F (1994) | 2.56 in (1963) |
| August 7 | 100.0°F (1918) | 48.0°F (1989) | 1.59 in (1998) |
| August 8 | 111.0°F (1934) | 46.0°F (1904) | 2.27 in (1939) |
| August 9 | 109.0°F (1934) | 41.0°F (1903) | 2.95 in (2007) |
| August 10 | 102.9°F (1936) | 48.0°F (1917) | 2.08 in (1985) |
| August 11 | 100.0°F (1975) | 46.0°F (1902) | 2.10 in (1932) |
| August 12 | 102.9°F (1918) | 48.0°F (1902) | 2.48 in (1945) |
| August 13 | 104.0°F (1936) | 48.0°F (1964) | 2.36 in (2010) |
| August 14 | 108.0°F (1936) | 46.0°F (1964) | 0.86 in (1947) |
| August 15 | 107.1°F (1988) | 46.0°F (1929) | 2.24 in (1986) |
| August 16 | 105.1°F (1988) | 48.0°F (1992) | 2.00 in (2009) |
| August 17 | 106.0°F (1988) | 48.9°F (1992) | 2.24 in (1997) |
| August 18 | 109.9°F (1936) | 46.9°F (1977) | 1.67 in (1956) |
| August 19 | 105.1°F (1983) | 46.9°F (2012) | 1.78 in (1914) |
| August 20 | 100.0°F (1901) | 39.9°F (1950) | 0.95 in (1935) |
| August 21 | 100.9°F (1936) | 46.0°F (1950) | 1.60 in (1905) |
| August 22 | 102.9°F (1936) | 43.0°F (1923) | 1.78 in (1988) |
| August 23 | 100.9°F (1948) | 42.1°F (1923) | 2.20 in (1989) |
| August 24 | 104.0°F (1936) | 42.1°F (1920) | 2.21 in (2007) |
| August 25 | 104.0°F (1936) | 43.0°F (1934) | 2.63 in (1951) |
| August 26 | 104.0°F (1983) | 43.0°F (1910) | 3.30 in (1992) |
| August 27 | 99.0°F (1955) | 44.1°F (1906) | 3.85 in (2009) |
| August 28 | 98.1°F (1897) | 42.1°F (1935) | 3.65 in (1998) |
| August 29 | 99.0°F (1983) | 41.0°F (1934) | 1.90 in (2018) |
| August 30 | 98.1°F (1898) | 39.0°F (1915) | 4.75 in (1965) |
| August 31 | 100.9°F (2013) | 39.9°F (1915) | 2.45 in (1980) |