Danville
California, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Danville, CA

Magnificent views of the hills surrounding Mt. Diablo State Park located in Contra Costa County in Danville, California
Magnificent views of the hills surrounding Mt. Diablo State Park located in Contra Costa County in Danville, California
September, the first month of the autumn, in Danville, is still a hot month, with average temperature fluctuating between 55°F (12.8°C) and 86°F (30°C).

Temperature

In Danville, California, the average high-temperature in September is relatively the same as in August - a still hot 86°F (30°C). In September, the average low-temperature is 55°F (12.8°C).

Rainfall

During September, Danville regularly aggregates up to 0.2" (5.6mm) of precipitation. During the entire year, Danville aggregates up to 15.3" (389.4mm) of precipitation.

Daylight

In Danville, the average length of the day in September is 12.4h.

What is the temperature in September in Danville?

In Danville, California, in September, the average high-temperature is 86°F (30°C), and the average low-temperature is 55°F (12.8°C).

How much does it rain in Danville in September?

Throughout September, in Danville, California, 0.2" (5.6mm) of precipitation is accumulated.

How many hours of daylight does Danville have in September?

In Danville, the average length of the day in September is 12.4h.
Average temperature in September - Danville, CA
  • Average high temperature in September: 86°F

The warmest month (with the highest average high temperature) is July (89°F).
Months with the lowest average high temperature are January and December (56°F).

  • Average low temperature in September: 55°F

Months with the highest average low temperature are July and August (57°F).
Coldest months (with the lowest average low temperature) are January and December (39°F).

Average rainfall in September - Danville, CA
  • Average rainfall in September: 0.2"

The wettest month (with the highest rainfall) is February (3").
The driest month (with the lowest rainfall) is July (0").

Average daylight in September - Danville, CA
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.8h).
The month with shortest days is December (Average daylight: 9.6h).