August weather in West Allis, WI
The average temperature in West Allis in August is 72.4°F (61.9°F–83.0°F). Average precipitation: 4.34 inches.
August is a summer month in West Allis, and is warmer than the annual average of 49.1°F. Daily temperatures swing about 21.1°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 13h 46m. For travel, August is a comfortable month to visit.
Avg High
83.0°F
Avg Low
61.9°F
Precipitation
4.34 in
Daylight
13h 46m
August records in West Allis
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 99.0°F (2006) | 57.0°F (1977) | 2.12 in (1953) |
| August 2 | 98.1°F (2002) | 52.0°F (1974) | 2.22 in (2024) |
| August 3 | 96.1°F (1955) | 50.0°F (1966) | 2.77 in (1960) |
| August 4 | 96.1°F (2005) | 50.0°F (1972) | 1.97 in (2004) |
| August 5 | 91.0°F (1958) | 51.1°F (1957) | 1.15 in (1961) |
| August 6 | 96.1°F (1968) | 51.1°F (2004) | 2.52 in (2000) |
| August 7 | 96.1°F (2001) | 53.1°F (2002) | 1.94 in (1965) |
| August 8 | 100.0°F (2001) | 53.1°F (1972) | 1.57 in (1987) |
| August 9 | 98.1°F (2001) | 48.0°F (1972) | 1.24 in (1979) |
| August 10 | 98.1°F (2001) | 52.0°F (2008) | 8.76 in (2025) |
| August 11 | 93.9°F (1976) | 48.9°F (1967) | 0.93 in (1964) |
| August 12 | 98.1°F (2002) | 50.0°F (1967) | 0.58 in (2005) |
| August 13 | 97.0°F (2010) | 51.1°F (1964) | 3.17 in (2002) |
| August 14 | 93.9°F (1965) | 48.9°F (2004) | 1.54 in (2002) |
| August 15 | 93.9°F (1978) | 46.9°F (2004) | 3.42 in (2023) |
| August 16 | 93.9°F (1983) | 48.0°F (1979) | 1.80 in (1987) |
| August 17 | 93.9°F (1972) | 53.1°F (1963) | 3.40 in (1983) |
| August 18 | 96.1°F (1955) | 50.0°F (1963) | 1.17 in (1978) |
| August 19 | 100.9°F (1983) | 50.0°F (2004) | 2.08 in (2007) |
| August 20 | 97.0°F (1955) | 51.1°F (2000) | 2.33 in (1968) |
| August 21 | 99.0°F (1955) | 48.0°F (2004) | 1.74 in (1964) |
| August 22 | 98.1°F (2003) | 41.0°F (1987) | 2.01 in (1975) |
| August 23 | 97.0°F (1968) | 51.1°F (1952) | 1.11 in (2007) |
| August 24 | 100.0°F (2023) | 48.9°F (1977) | 1.71 in (1962) |
| August 25 | 93.9°F (1959) | 48.0°F (1958) | 2.20 in (2004) |
| August 26 | 97.0°F (1973) | 51.1°F (1964) | 1.84 in (1986) |
| August 27 | 98.1°F (1973) | 48.0°F (1986) | 0.77 in (2000) |
| August 28 | 96.1°F (2024) | 44.1°F (1965) | 1.30 in (1977) |
| August 29 | 97.0°F (1984) | 46.0°F (1965) | 1.19 in (1967) |
| August 30 | 96.1°F (1958) | 50.0°F (2009) | 0.91 in (1956) |
| August 31 | 96.1°F (1953) | 45.0°F (2009) | 0.87 in (1981) |