United States · 1991–2020 normal
Big Coppitt Key in
September.
Typical September weather in Big Coppitt Key: 31.8°C by day, 26.2°C at night, 177 mm of rain over 12.1 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high31.8°C
Typical low26.2°C
Rain177 mm
Wet days12.1
Comfort score 26 this month (January leads the year at 89). Daylight is calculated as 12 h 16 from latitude 24.60°. Open-water sea temperature is 29.5°C (5 km from the place centre).
Event window
Warm sea in September
The nearest open-water NOAA OISST 1991–2020 cell averages 29.5°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 4147679
- NOAA station
- USW00012850 · KEY WEST NAS
- Station distance
- 2.8 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.