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Climate & Weather Averages in Bay St. Louis, Mississippi, USA

Currently: 81 °F. Broken clouds. (Weather station: Stennis International Airport, USA). See more current weather

Annual Weather Averages Near Bay St. Louis

Averages are for Stennis International Airport, which is 8 miles from Bay St. Louis.

Based on weather reports collected during 1985–2015.

All Year Climate & Weather Averages in Bay St. Louis

High Temp: 91 °F

Low Temp: 41 °F

Mean Temp: 68 °F

Precipitation: 2.12"

Humidity: 74%

Dew Point: 60 °F

Wind: 6 mph

Pressure: 30.05 "Hg

Visibility: 9 mi

January Climate & Weather Averages in Bay St. Louis

High Temp: 63 °F

Low Temp: 41 °F

Mean Temp: 52 °F

Precipitation: 2.16"

Humidity: 75%

Dew Point: 44 °F

Wind: 7 mph

Pressure: 30.16 "Hg

Visibility: 9 mi

February Climate & Weather Averages in Bay St. Louis

High Temp: 66 °F

Low Temp: 44 °F

Mean Temp: 55 °F

Precipitation: 2.07"

Humidity: 74%

Dew Point: 47 °F

Wind: 7 mph

Pressure: 30.11 "Hg

Visibility: 9 mi

March Climate & Weather Averages in Bay St. Louis

High Temp: 72 °F

Low Temp: 50 °F

Mean Temp: 61 °F

Precipitation: 2.03"

Humidity: 73%

Dew Point: 53 °F

Wind: 7 mph

Pressure: 30.06 "Hg

Visibility: 9 mi

April Climate & Weather Averages in Bay St. Louis

High Temp: 78 °F

Low Temp: 56 °F

Mean Temp: 67 °F

Precipitation: 1.69"

Humidity: 72%

Dew Point: 59 °F

Wind: 7 mph

Pressure: 30.01 "Hg

Visibility: 9 mi

May Climate & Weather Averages in Bay St. Louis

High Temp: 85 °F

Low Temp: 64 °F

Mean Temp: 75 °F

Precipitation: 1.68"

Humidity: 72%

Dew Point: 66 °F

Wind: 6 mph

Pressure: 30.00 "Hg

Visibility: 9 mi

June Climate & Weather Averages in Bay St. Louis

High Temp: 90 °F

Low Temp: 71 °F

Mean Temp: 80 °F

Precipitation: 2.45"

Humidity: 74%

Dew Point: 72 °F

Wind: 5 mph

Pressure: 29.98 "Hg

Visibility: 9 mi

July Climate & Weather Averages in Bay St. Louis

High Temp: 91 °F

Low Temp: 73 °F

Mean Temp: 82 °F

Precipitation: 3.84"

Humidity: 75%

Dew Point: 74 °F

Wind: 4 mph

Pressure: 30.02 "Hg

Visibility: 9 mi

August Climate & Weather Averages in Bay St. Louis

High Temp: 91 °F

Low Temp: 73 °F

Mean Temp: 82 °F

Precipitation: 3.28"

Humidity: 74%

Dew Point: 74 °F

Wind: 4 mph

Pressure: 29.99 "Hg

Visibility: 9 mi

September Climate & Weather Averages in Bay St. Louis

High Temp: 88 °F

Low Temp: 69 °F

Mean Temp: 78 °F

Precipitation: 1.83"

Humidity: 74%

Dew Point: 70 °F

Wind: 5 mph

Pressure: 29.98 "Hg

Visibility: 9 mi

October Climate & Weather Averages in Bay St. Louis

High Temp: 80 °F

Low Temp: 57 °F

Mean Temp: 68 °F

Precipitation: 0.91"

Humidity: 73%

Dew Point: 60 °F

Wind: 5 mph

Pressure: 30.05 "Hg

Visibility: 9 mi

November Climate & Weather Averages in Bay St. Louis

High Temp: 72 °F

Low Temp: 47 °F

Mean Temp: 59 °F

Precipitation: 1.51"

Humidity: 75%

Dew Point: 52 °F

Wind: 6 mph

Pressure: 30.12 "Hg

Visibility: 9 mi

December Climate & Weather Averages in Bay St. Louis

High Temp: 65 °F

Low Temp: 42 °F

Mean Temp: 53 °F

Precipitation: 1.94"

Humidity: 77%

Dew Point: 47 °F

Wind: 6 mph

Pressure: 30.15 "Hg

Visibility: 9 mi

Quick Climate Info

Hottest MonthJuly (82 °F avg)
Coldest MonthJanuary (52 °F avg)
Wettest MonthJuly (3.84" avg)
Windiest MonthFebruary (7 mph avg)
Annual precip.25.39" (per year)

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