United States · 1991–2020 normal
Clayton in
September.
Typical September weather in Clayton: 27.5°C by day, 14.4°C at night, 3 mm of rain over 0.6 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high27.5°C
Typical low14.4°C
Rain3 mm
Wet days0.6
Comfort score 87 this month (June leads the year at 91). Daylight is calculated as 12 h 23 from latitude 37.94°.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 5337841
- NOAA station
- USC00045915 · MT DIABLO JUNCTION
- Station distance
- 6.9 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.