August weather in Grundy Center, IA
The average temperature in Grundy Center in August is 70.2°F (59.6°F–80.9°F). Average precipitation: 4.80 inches.
August is a summer month in Grundy Center, and is warmer than the annual average of 47.1°F. Daily temperatures swing about 21.3°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 13h 43m. For travel, August is a comfortable month to visit.
Avg High
80.9°F
Avg Low
59.6°F
Precipitation
4.80 in
Daylight
13h 43m
August records in Grundy Center
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 100.9°F (1988) | 46.9°F (1898) | 2.10 in (1921) |
| August 2 | 98.1°F (1988) | 42.1°F (1894) | 2.41 in (1972) |
| August 3 | 105.1°F (1930) | 42.1°F (1894) | 1.55 in (1903) |
| August 4 | 100.0°F (1947) | 46.0°F (1978) | 1.95 in (2004) |
| August 5 | 102.9°F (1918) | 44.1°F (1994) | 4.00 in (1968) |
| August 6 | 100.0°F (1918) | 46.0°F (1994) | 4.01 in (2018) |
| August 7 | 100.0°F (1918) | 45.0°F (1976) | 2.65 in (1923) |
| August 8 | 100.9°F (1934) | 41.0°F (1904) | 3.27 in (2021) |
| August 9 | 98.1°F (1894) | 43.0°F (1927) | 1.70 in (1911) |
| August 10 | 100.0°F (1947) | 48.0°F (1967) | 3.01 in (2009) |
| August 11 | 99.0°F (1941) | 43.0°F (1982) | 1.28 in (2010) |
| August 12 | 100.0°F (1936) | 43.0°F (1964) | 1.61 in (1925) |
| August 13 | 96.1°F (1918) | 39.9°F (1916) | 2.26 in (1902) |
| August 14 | 95.0°F (1909) | 37.9°F (1964) | 4.36 in (1945) |
| August 15 | 100.0°F (1988) | 44.1°F (1992) | 2.04 in (1993) |
| August 16 | 100.9°F (1937) | 44.1°F (1992) | 2.00 in (1965) |
| August 17 | 100.9°F (1988) | 44.1°F (1992) | 2.10 in (1910) |
| August 18 | 108.0°F (1936) | 43.0°F (1977) | 4.68 in (1924) |
| August 19 | 97.0°F (1912) | 39.9°F (1963) | 2.85 in (1902) |
| August 20 | 98.1°F (1947) | 37.0°F (1950) | 2.75 in (1898) |
| August 21 | 98.1°F (1936) | 42.1°F (2004) | 5.00 in (1966) |
| August 22 | 97.0°F (1947) | 42.1°F (1923) | 3.00 in (2002) |
| August 23 | 98.1°F (1948) | 41.0°F (1966) | 1.74 in (1895) |
| August 24 | 100.0°F (1936) | 41.0°F (1908) | 1.23 in (1954) |
| August 25 | 97.0°F (2023) | 41.0°F (1958) | 1.92 in (1990) |
| August 26 | 96.1°F (1955) | 39.9°F (1964) | 3.08 in (1951) |
| August 27 | 96.1°F (1955) | 39.9°F (1896) | 5.22 in (1923) |
| August 28 | 96.1°F (1955) | 37.9°F (1893) | 2.59 in (2022) |
| August 29 | 93.0°F (1925) | 37.0°F (1946) | 4.27 in (2015) |
| August 30 | 95.0°F (1898) | 39.0°F (1897) | 2.27 in (1921) |
| August 31 | 97.0°F (1912) | 39.9°F (1967) | 2.41 in (2011) |