United States · 1991–2020 normal
Atherton in
September.
Typical September weather in Atherton: 26.5°C by day, 12.6°C at night, 2 mm of rain over 0.3 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high26.5°C
Typical low12.6°C
Rain2 mm
Wet days0.3
Comfort score 87 this month (October leads the year at 91). Daylight is calculated as 12 h 23 from latitude 37.46°. Open-water sea temperature is 14.9°C (18 km from the place centre).
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 5325147
- NOAA station
- USC00047339 · REDWOOD CITY
- Station distance
- 4 km from the place centre
- Coverage
- Strong coverage · 28 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.