May weather in Bay St. Louis, MS
The average temperature in Bay St. Louis in May is 73.9°F (66.1°F–81.7°F). Average precipitation: 5.75 inches.
May is a spring month in Bay St. Louis, and is warmer than the annual average of 67°F. Daily temperatures swing about 15.6°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 13h 32m. For travel, May is a wet month.
Avg High
81.7°F
Avg Low
66.1°F
Precipitation
5.75 in
Daylight
13h 32m
May records in Bay St. Louis
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 88.0°F (1987) | 48.0°F (1996) | 2.36 in (2005) |
| May 2 | 88.0°F (1987) | 48.0°F (1988) | 2.68 in (2013) |
| May 3 | 89.1°F (2002) | 48.0°F (2004) | 2.34 in (2012) |
| May 4 | 88.0°F (2003) | 43.0°F (2013) | 2.70 in (2017) |
| May 5 | 89.1°F (2002) | 43.0°F (2013) | 0.55 in (1989) |
| May 6 | 90.0°F (2006) | 43.0°F (2013) | 2.33 in (1991) |
| May 7 | 88.0°F (1984) | 42.1°F (1992) | 1.59 in (2023) |
| May 8 | 88.0°F (2003) | 44.1°F (1992) | 0.54 in (1982) |
| May 9 | 88.0°F (2003) | 45.0°F (1984) | 2.25 in (1991) |
| May 10 | 91.0°F (1986) | 46.0°F (1984) | 8.90 in (1995) |
| May 11 | 89.1°F (2007) | 44.1°F (1984) | 2.60 in (1993) |
| May 12 | 91.0°F (2003) | 42.1°F (1992) | 0.41 in (1986) |
| May 13 | 89.1°F (2007) | 48.0°F (1992) | 3.38 in (2004) |
| May 14 | 88.0°F (1992) | 52.0°F (1988) | 3.86 in (1990) |
| May 15 | 91.9°F (2018) | 54.0°F (2002) | 2.23 in (2008) |
| May 16 | 88.0°F (1985) | 50.0°F (1985) | 2.11 in (2024) |
| May 17 | 93.0°F (2018) | 50.0°F (1985) | 1.46 in (2008) |
| May 18 | 93.0°F (1998) | 51.1°F (2011) | 2.75 in (2003) |
| May 19 | 91.9°F (2018) | 50.0°F (2002) | 2.10 in (1991) |
| May 20 | 93.0°F (2018) | 52.0°F (2002) | 7.75 in (1997) |
| May 21 | 90.0°F (2018) | 46.9°F (2006) | 1.73 in (2023) |
| May 22 | 89.1°F (2005) | 52.0°F (1986) | 2.28 in (2017) |
| May 23 | 91.9°F (1996) | 48.9°F (2001) | 1.40 in (2020) |
| May 24 | 93.0°F (2005) | 55.9°F (2001) | 0.69 in (1991) |
| May 25 | 93.9°F (2005) | 53.1°F (1985) | 1.23 in (1993) |
| May 26 | 90.0°F (2000) | 53.1°F (1983) | 3.15 in (1991) |
| May 27 | 91.0°F (2006) | 46.9°F (2017) | 3.05 in (1986) |
| May 28 | 93.9°F (1989) | 57.0°F (1988) | 1.49 in (1999) |
| May 29 | 93.0°F (2000) | 57.9°F (1988) | 5.16 in (1996) |
| May 30 | 93.0°F (2000) | 52.0°F (1984) | 9.08 in (2005) |
| May 31 | 95.0°F (1998) | 43.0°F (1984) | 3.73 in (1995) |