August weather in Slidell, LA
The average temperature in Slidell in August is 81.6°F (73.5°F–89.7°F). Average precipitation: 7.57 inches.
August is a summer month in Slidell, and is warmer than the annual average of 67.6°F. Daily temperatures swing about 16.2°F between overnight low and afternoon high. Expect about 14 days with precipitation. Daylight averages about 13h 6m. For travel, August is a wet month.
Avg High
89.7°F
Avg Low
73.5°F
Precipitation
7.57 in
Daylight
13h 6m
August records in Slidell
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 98.1°F (1986) | 68.0°F (1974) | 1.81 in (1962) |
| August 2 | 102.9°F (1970) | 63.0°F (1999) | 3.52 in (1957) |
| August 3 | 97.0°F (2010) | 66.0°F (1973) | 1.72 in (2021) |
| August 4 | 98.1°F (1964) | 66.0°F (1973) | 1.98 in (2016) |
| August 5 | 98.1°F (1972) | 64.9°F (1967) | 3.47 in (2002) |
| August 6 | 98.1°F (2025) | 55.0°F (2011) | 2.16 in (1990) |
| August 7 | 98.1°F (2023) | 66.9°F (2004) | 1.27 in (2012) |
| August 8 | 98.1°F (1956) | 64.0°F (1989) | 3.60 in (2001) |
| August 9 | 98.1°F (1956) | 59.0°F (1989) | 3.33 in (2019) |
| August 10 | 98.1°F (2015) | 59.0°F (1976) | 3.45 in (1975) |
| August 11 | 98.1°F (2023) | 57.9°F (1976) | 4.10 in (2000) |
| August 12 | 99.0°F (2007) | 59.0°F (1967) | 3.73 in (1987) |
| August 13 | 99.0°F (2007) | 61.0°F (2004) | 2.00 in (1968) |
| August 14 | 97.0°F (2023) | 57.9°F (2004) | 1.86 in (1972) |
| August 15 | 97.0°F (2023) | 59.0°F (2004) | 6.10 in (1985) |
| August 16 | 98.1°F (2023) | 62.1°F (2004) | 3.93 in (1988) |
| August 17 | 97.0°F (1995) | 63.0°F (1992) | 2.00 in (2010) |
| August 18 | 98.1°F (1995) | 66.0°F (2004) | 5.03 in (1969) |
| August 19 | 97.0°F (1993) | 62.1°F (1976) | 1.40 in (1977) |
| August 20 | 99.0°F (1972) | 60.1°F (1961) | 2.91 in (2019) |
| August 21 | 100.0°F (1972) | 64.9°F (1957) | 3.45 in (2020) |
| August 22 | 99.0°F (1972) | 60.1°F (1956) | 1.60 in (2009) |
| August 23 | 100.9°F (1980) | 57.9°F (1956) | 2.00 in (1967) |
| August 24 | 100.0°F (2023) | 62.1°F (1956) | 1.68 in (1958) |
| August 25 | 97.0°F (1986) | 62.1°F (1966) | 2.18 in (2008) |
| August 26 | 97.0°F (1990) | 61.0°F (2015) | 2.90 in (1992) |
| August 27 | 100.0°F (2023) | 61.0°F (1958) | 3.68 in (1991) |
| August 28 | 100.9°F (2023) | 62.1°F (1968) | 3.65 in (2010) |
| August 29 | 97.0°F (1998) | 61.0°F (1992) | 3.05 in (2012) |
| August 30 | 97.0°F (2000) | 61.0°F (1968) | 10.00 in (2021) |
| August 31 | 99.0°F (2000) | 62.1°F (1968) | 2.00 in (2003) |