United States · 1991–2020 normal
Chantilly in
September.
Typical September weather in Chantilly: 26.3°C by day, 14.3°C at night, 100 mm of rain over 7.3 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high26.3°C
Typical low14.3°C
Rain100 mm
Wet days7.3
Comfort score 78 this month, the highest of the year. Daylight is calculated as 12 h 24 from latitude 38.89°.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 4751935
- NOAA station
- USW00093738 · WASHINGTON DULLES INTL AP
- Station distance
- 4.7 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.