Bay St Louis Weather Forecast

    • 72
    • 76

    Rain Showers

    • 72
    • 78

    Rain Showers Likely

    • 62
    • 79

    Chance Rain Showers

    • 62
    • 75

    Mostly Sunny

    • 67
    • 78

    Mostly Sunny

    • 68
    • 80

    Mostly Sunny

Today 9 May Southern Hancock

A chance of Thunderstorms. Showers. Highs around 80. Southwest Winds around 5 Mph. Chance of rain 80 percent.

Tonight 9 May Southern Hancock

Mostly cloudy with a chance of Showers. A chance of Thunderstorms, mainly in the evening. Lows in the upper 60s. South Winds around 5 Mph in the Evening, becoming light and variable. Chance of rain 50 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Bay St Louis Temperature Statistics

May Temperature

Bay St. Louis, Stennis International Airport (8.7 miles)

  • Lowest 4 May, 2026

    48.2 °F

  • Average May

    70.6 °F

  • Highest 6 May, 2026

    84.2 °F

Climate (2021–Present)

Bay St. Louis, Stennis International Airport (8.7 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    60.3 °F

  • Average 2021–2026

    71.6 °F

  • Average High 2021–2026

    78.4 °F
Get WillyWeather+ to remove ads