August weather in Fairfax, IA
The average temperature in Fairfax in August is 70.8°F (60.4°F–81.2°F). Average precipitation: 4.07 inches.
August is a summer month in Fairfax, and is warmer than the annual average of 48.3°F. Daily temperatures swing about 20.8°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 13h 42m. For travel, August is a comfortable month to visit.
Avg High
81.2°F
Avg Low
60.4°F
Precipitation
4.07 in
Daylight
13h 42m
August records in Fairfax
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 100.9°F (1987) | 52.0°F (1973) | 4.80 in (1972) |
| August 2 | 99.0°F (1988) | 50.0°F (1973) | 1.42 in (1981) |
| August 3 | 99.0°F (1988) | 48.0°F (1976) | 1.21 in (2004) |
| August 4 | 98.1°F (1988) | 46.9°F (1978) | 2.99 in (1968) |
| August 5 | 93.0°F (1984) | 48.9°F (2020) | 1.81 in (1955) |
| August 6 | 93.9°F (1984) | 48.0°F (2004) | 1.62 in (1998) |
| August 7 | 95.0°F (1984) | 46.0°F (1989) | 1.99 in (1982) |
| August 8 | 97.0°F (1988) | 48.0°F (1976) | 2.27 in (1967) |
| August 9 | 95.0°F (2005) | 48.9°F (1972) | 5.10 in (1993) |
| August 10 | 98.1°F (1983) | 48.0°F (2024) | 2.79 in (2025) |
| August 11 | 95.0°F (1988) | 46.9°F (2004) | 4.91 in (2016) |
| August 12 | 95.0°F (1958) | 48.9°F (2004) | 2.16 in (1974) |
| August 13 | 98.1°F (1965) | 42.1°F (1964) | 0.85 in (2010) |
| August 14 | 97.0°F (1988) | 43.0°F (2004) | 1.05 in (1993) |
| August 15 | 102.0°F (1988) | 45.0°F (2004) | 3.29 in (1977) |
| August 16 | 100.0°F (1988) | 48.0°F (1976) | 2.13 in (1993) |
| August 17 | 100.0°F (1988) | 46.9°F (2012) | 1.25 in (1990) |
| August 18 | 96.1°F (1988) | 46.0°F (2002) | 1.72 in (2019) |
| August 19 | 99.0°F (1983) | 45.0°F (2004) | 2.11 in (1979) |
| August 20 | 98.1°F (1983) | 46.9°F (1956) | 2.42 in (1969) |
| August 21 | 95.0°F (1955) | 46.0°F (2004) | 0.86 in (2017) |
| August 22 | 93.0°F (1971) | 50.0°F (2024) | 2.35 in (1988) |
| August 23 | 100.0°F (2023) | 46.0°F (1966) | 3.10 in (2002) |
| August 24 | 99.0°F (2023) | 46.0°F (1966) | 1.31 in (1962) |
| August 25 | 95.0°F (1955) | 44.1°F (1958) | 2.61 in (1987) |
| August 26 | 95.0°F (1955) | 45.0°F (1964) | 2.24 in (2004) |
| August 27 | 97.0°F (1955) | 43.0°F (1986) | 5.35 in (2009) |
| August 28 | 96.1°F (1955) | 39.9°F (1986) | 2.17 in (1957) |
| August 29 | 95.0°F (1984) | 44.1°F (1986) | 1.49 in (2024) |
| August 30 | 100.0°F (1953) | 46.0°F (2009) | 1.81 in (1956) |
| August 31 | 98.1°F (1953) | 44.1°F (2009) | 1.74 in (2010) |