August weather in Bay St. Louis, MS
The average temperature in Bay St. Louis in August is 81.5°F (74.0°F–89.0°F). Average precipitation: 5.90 inches.
August is a summer month in Bay St. Louis, and is warmer than the annual average of 67°F. Daily temperatures swing about 15°F between overnight low and afternoon high. Expect about 12 days with precipitation. Daylight averages about 13h 6m. For travel, August is a wet month.
Avg High
89.0°F
Avg Low
74.0°F
Precipitation
5.90 in
Daylight
13h 6m
August records in Bay St. Louis
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 102.9°F (1986) | 68.0°F (1984) | 2.60 in (1989) |
| August 2 | 104.0°F (1986) | 68.0°F (1982) | 1.78 in (1996) |
| August 3 | 100.0°F (1986) | 68.0°F (1982) | 1.64 in (1996) |
| August 4 | 96.1°F (1999) | 68.0°F (1982) | 2.05 in (2017) |
| August 5 | 95.0°F (1986) | 66.9°F (1982) | 2.65 in (2002) |
| August 6 | 96.1°F (2009) | 68.0°F (1986) | 0.73 in (1990) |
| August 7 | 95.0°F (1999) | 69.1°F (1982) | 2.65 in (1987) |
| August 8 | 97.0°F (2015) | 66.9°F (1990) | 2.58 in (1985) |
| August 9 | 95.0°F (2007) | 61.0°F (1989) | 3.35 in (1998) |
| August 10 | 97.0°F (2007) | 61.0°F (1989) | 2.58 in (1999) |
| August 11 | 96.1°F (2006) | 61.0°F (1989) | 0.70 in (2012) |
| August 12 | 98.1°F (2007) | 60.1°F (1989) | 3.09 in (2016) |
| August 13 | 99.0°F (2007) | 63.0°F (2004) | 1.47 in (1992) |
| August 14 | 96.1°F (1999) | 60.1°F (2004) | 2.50 in (1992) |
| August 15 | 97.0°F (1999) | 63.0°F (2004) | 1.23 in (1985) |
| August 16 | 99.0°F (2006) | 63.0°F (2004) | 3.30 in (1985) |
| August 17 | 97.0°F (1995) | 64.0°F (1992) | 1.98 in (1988) |
| August 18 | 96.1°F (1995) | 64.0°F (1992) | 2.80 in (2013) |
| August 19 | 95.0°F (2000) | 64.9°F (1989) | 0.71 in (2012) |
| August 20 | 99.0°F (2000) | 68.0°F (1992) | 1.27 in (2012) |
| August 21 | 97.0°F (1987) | 68.0°F (1982) | 1.10 in (2004) |
| August 22 | 97.0°F (1987) | 66.9°F (1997) | 0.81 in (1984) |
| August 23 | 96.1°F (2010) | 68.0°F (1991) | 0.72 in (2010) |
| August 24 | 95.0°F (2007) | 63.0°F (2009) | 1.36 in (2022) |
| August 25 | 96.1°F (2015) | 62.1°F (2009) | 2.12 in (2008) |
| August 26 | 96.1°F (1983) | 50.0°F (2009) | 1.65 in (2022) |
| August 27 | 97.0°F (2011) | 54.0°F (2009) | 1.27 in (2010) |
| August 28 | 96.1°F (1989) | 59.0°F (2009) | 2.22 in (2025) |
| August 29 | 96.1°F (1982) | 61.0°F (2009) | 2.90 in (2012) |
| August 30 | 100.0°F (2000) | 59.0°F (2009) | 11.63 in (2012) |
| August 31 | 93.9°F (2007) | 61.0°F (1992) | 1.56 in (2012) |