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

September weather forecast and climate
Lafayette, CA

The first month of the autumn, September, is also a moderately hot month in Lafayette, California, with average temperature fluctuating between 82.9°F (28.3°C) and 54°F (12.2°C).

Temperature

In September, the average high-temperature is relatively the same as in August - a warm 82.9°F (28.3°C). The average low-temperature, in September, is 54°F (12.2°C).

Rainfall

In Lafayette, California, 0.2" (6.1mm) of precipitation is typically accumulated. During the entire year, Lafayette aggregates up to 19.6" (497.4mm) of precipitation.

Daylight

The average length of the day in September is 12.4h.

What is the temperature in September in Lafayette?

In September, the average high-temperature is 82.9°F (28.3°C), and the average low-temperature is 54°F (12.2°C).

How much does it rain in Lafayette in September?

During September, Lafayette regularly aggregates up to 0.2" (6.1mm) of precipitation.

What is the average length of the day in September in Lafayette?

In Lafayette, California, the average length of the day in September is 12.4h.
Average temperature in September - Lafayette, CA
  • Average high temperature in September: 83°F

Warmest months (with the highest average high temperature) are July and August (87°F).
The month with the lowest average high temperature is January (54°F).

  • Average low temperature in September: 54°F

Months with the highest average low temperature are July and August (55°F).
Coldest months (with the lowest average low temperature) are January and December (39°F).

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

The wettest month (with the highest rainfall) is January (4.3").
The driest month (with the lowest rainfall) is July (0").

Average daylight in September - Lafayette, 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).