United States · 1991–2020 normal
Bay Saint Louis in
September.
Typical September weather in Bay Saint Louis: 30.1°C by day, 20.7°C at night, 148 mm of rain over 8.2 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high30.1°C
Typical low20.7°C
Rain148 mm
Wet days8.2
Comfort score 49 this month (October leads the year at 84). Daylight is calculated as 12 h 19 from latitude 30.31°. Open-water sea temperature is 28.3°C (21 km from the place centre).
Event window
Warm sea in September
The nearest open-water NOAA OISST 1991–2020 cell averages 28.3°C in September. A sheltered bay can run warmer than that open-water cell.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 4417205
- NOAA station
- USC00229426 · WAVELAND
- Station distance
- 5.3 km from the place centre
- Coverage
- Strong coverage · 26 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.