United States · 1991–2020 normal
St. Marys in
September.
Typical September weather in St. Marys: 29.3°C by day, 22.5°C at night, 205 mm of rain over 10.6 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high29.3°C
Typical low22.5°C
Rain205 mm
Wet days10.6
Comfort score 38 this month (April leads the year at 89). Daylight is calculated as 12 h 19 from latitude 30.73°. Open-water sea temperature is 27.9°C (20 km from the place centre).
Event window
Warm sea in September
The nearest open-water NOAA OISST 1991–2020 cell averages 27.9°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 4220629
- NOAA station
- USC00082944 · FERNANDINA BEACH
- Station distance
- 11.4 km from the place centre
- Coverage
- Good coverage · 24 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.