United States · 1991–2020 normal
Rock Hall in
September.
Typical September weather in Rock Hall: 26.5°C by day, 14.4°C at night, 126 mm of rain over 7.6 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high26.5°C
Typical low14.4°C
Rain126 mm
Wet days7.6
Comfort score 74 this month (May leads the year at 81). Daylight is calculated as 12 h 24 from latitude 39.14°. Open-water sea temperature is 23.3°C (12 km from the place centre).
Event window
Warm sea in September
The nearest open-water NOAA OISST 1991–2020 cell averages 23.3°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 4367081
- NOAA station
- USC00181750 · CHESTERTOWN
- Station distance
- 18 km from the place centre
- Coverage
- Good coverage · 20 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.