WeatherWX.com
Bay St. Louis Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 60°F Lo 45°F | Hi 64°F Lo 50°F | Hi 70°F Lo 56°F | Hi 76°F Lo 62°F | Hi 82°F Lo 69°F | Hi 88°F Lo 76°F | Hi 89°F Lo 78°F | Hi 89°F Lo 77°F | Hi 86°F Lo 73°F | Hi 79°F Lo 64°F | Hi 69°F Lo 53°F | Hi 63°F Lo 50°F |
| 9 mph | 9 mph | 9 mph | 9 mph | 8 mph | 7 mph | 6 mph | 6 mph | 7 mph | 8 mph | 8 mph | 9 mph |
| 4.2 in | 5 in | 4.8 in | 5 in | 5 in | 6.4 in | 7.2 in | 8.5 in | 5.2 in | 3.2 in | 3.1 in | 5.3 in |
| 75% | 78% | 76% | 75% | 75% | 74% | 75% | 74% | 74% | 71% | 73% | 79% |
| 37% | 43% | 38% | 34% | 30% | 33% | 36% | 36% | 30% | 24% | 30% | 44% |
| 30.2 in | 30.1 in | 30.1 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.1 in | 30.1 in |
| 24 | 21 | 23 | 23 | 21 | 13 | 10 | 10 | 18 | 25 | 25 | 24 |
| 6 | 7 | 8 | 7 | 10 | 17 | 21 | 21 | 12 | 6 | 5 | 7 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 4 | 4 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 5 | 4 | 4 |
| 206 | 156 | 193 | 209 | 235 | 205 | 181 | 187 | 227 | 261 | 228 | 174 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 16°C Lo 7°C | Hi 18°C Lo 10°C | Hi 21°C Lo 13°C | Hi 24°C Lo 16°C | Hi 28°C Lo 21°C | Hi 31°C Lo 24°C | Hi 32°C Lo 25°C | Hi 32°C Lo 25°C | Hi 30°C Lo 23°C | Hi 26°C Lo 18°C | Hi 20°C Lo 12°C | Hi 17°C Lo 10°C |
| 14 km/h | 14 km/h | 14 km/h | 14 km/h | 12 km/h | 11 km/h | 10 km/h | 10 km/h | 11 km/h | 13 km/h | 13 km/h | 14 km/h |
| 106 mm | 127 mm | 121 mm | 127 mm | 126 mm | 163 mm | 184 mm | 216 mm | 131 mm | 82 mm | 79 mm | 134 mm |
| 75% | 78% | 76% | 75% | 75% | 74% | 75% | 74% | 74% | 71% | 73% | 79% |
| 37% | 43% | 38% | 34% | 30% | 33% | 36% | 36% | 30% | 24% | 30% | 44% |
| 1021 mb | 1020 mb | 1019 mb | 1016 mb | 1016 mb | 1014 mb | 1016 mb | 1015 mb | 1015 mb | 1017 mb | 1020 mb | 1020 mb |
| 24 | 21 | 23 | 23 | 21 | 13 | 10 | 10 | 18 | 25 | 25 | 24 |
| 6 | 7 | 8 | 7 | 10 | 17 | 21 | 21 | 12 | 6 | 5 | 7 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 4 | 4 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 5 | 4 | 4 |
| 206 | 156 | 193 | 209 | 235 | 205 | 181 | 187 | 227 | 261 | 228 | 174 |
| Month |
| Avg. Temperatures |
| Avg. Wind Speed |
| Avg. Precipitation |
| Average Humidity |
| Avg. Cloud Cover |
| Pressure Average |
| Average Dry Days |
| Avg. Precip. Days |
| Avg. Snow Days |
| Average Fog Days |
| Average UV Index |
| Avg. Hours of Sun |
Averages are based on historical weather data from the past 10 years.