Currently: 85 °F. Thundershowers. Passing clouds. (Weather station: Gulfport-Biloxi Regional Airport, USA). See more current weatherAnnual 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 1992–2021.
All Year Climate & Weather Averages in Bay St. Louis
High Temp: 91 °F
Low Temp: 41 °F
Mean Temp: 68 °F
Precipitation: 5.18"
Humidity: 74%
Dew Point: 60 °F
Wind: 9 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: 4.99"
Humidity: 74%
Dew Point: 44 °F
Wind: 11 mph
Pressure: 30.16 "Hg
Visibility: 9 mi
February Climate & Weather Averages in Bay St. Louis
High Temp: 67 °F
Low Temp: 44 °F
Mean Temp: 55 °F
Precipitation: 4.27"
Humidity: 75%
Dew Point: 48 °F
Wind: 11 mph
Pressure: 30.11 "Hg
Visibility: 9 mi
March Climate & Weather Averages in Bay St. Louis
High Temp: 73 °F
Low Temp: 50 °F
Mean Temp: 61 °F
Precipitation: 5.03"
Humidity: 73%
Dew Point: 53 °F
Wind: 12 mph
Pressure: 30.07 "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: 5.21"
Humidity: 73%
Dew Point: 58 °F
Wind: 12 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: 74 °F
Precipitation: 5.52"
Humidity: 72%
Dew Point: 66 °F
Wind: 10 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: 6.31"
Humidity: 74%
Dew Point: 72 °F
Wind: 8 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: 7.21"
Humidity: 75%
Dew Point: 74 °F
Wind: 6 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: 7.44"
Humidity: 74%
Dew Point: 74 °F
Wind: 6 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: 79 °F
Precipitation: 4.32"
Humidity: 74%
Dew Point: 70 °F
Wind: 7 mph
Pressure: 29.98 "Hg
Visibility: 9 mi
October Climate & Weather Averages in Bay St. Louis
High Temp: 81 °F
Low Temp: 58 °F
Mean Temp: 69 °F
Precipitation: 3.54"
Humidity: 74%
Dew Point: 61 °F
Wind: 8 mph
Pressure: 30.04 "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: 3.83"
Humidity: 74%
Dew Point: 51 °F
Wind: 9 mph
Pressure: 30.13 "Hg
Visibility: 9 mi
December Climate & Weather Averages in Bay St. Louis
High Temp: 65 °F
Low Temp: 43 °F
Mean Temp: 54 °F
Precipitation: 4.50"
Humidity: 77%
Dew Point: 47 °F
Wind: 10 mph
Pressure: 30.14 "Hg
Visibility: 9 mi