United States · 1991–2020 normal
Pasadena in
September.
Typical September weather in Pasadena: 26.2°C by day, 15.1°C at night, 113 mm of rain over 7.1 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high26.2°C
Typical low15.1°C
Rain113 mm
Wet days7.1
Comfort score 78 this month (May leads the year at 80). Daylight is calculated as 12 h 24 from latitude 39.12°. Open-water sea temperature is 23.3°C (17 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 4364990
- NOAA station
- USW00093721 · BALTIMORE-WASHINGTON INTL AP
- Station distance
- 11.5 km from the place centre
- Coverage
- Strong coverage · 30 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.