San Rafael
California, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
San Rafael, CA

The first month of the autumn, September, is also a moderately hot month in San Rafael, California, with average temperature varying between 54°F (12.2°C) and 79°F (26.1°C).

Temperature

In San Rafael, the average high-temperature in September is relatively the same as in August - a still warm 79°F (26.1°C). The average low-temperature, in San Rafael, is 54°F (12.2°C).

Rainfall

In San Rafael, in September, during 1 rainfall days, 0.1" (3.3mm) of precipitation is typically accumulated. In San Rafael, during the entire year, the rain falls for 64.3 days and collects up to 32.2" (817.2mm) of precipitation.

Daylight

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

What is the temperature in September in San Rafael?

In San Rafael, California, in September, the average high-temperature is 79°F (26.1°C), and the average low-temperature is 54°F (12.2°C).

How much does it rain in San Rafael in September?

In San Rafael, in September, it is raining for 1 days, with typically 0.1" (3.3mm) of accumulated precipitation.

What is the average length of the day in September in San Rafael?

In San Rafael, California, the average length of the day in September is 12.4h.
Average temperature in September - San Rafael, CA
  • Average high temperature in September: 79°F

Warmest months (with the highest average high temperature) are July and August (80°F).
Months with the lowest average high temperature are January and December (55°F).

  • Average low temperature in September: 54°F

Months with the highest average low temperature are July and August (55°F).
The coldest month (with the lowest average low temperature) is December (41°F).

Average rainfall in September - San Rafael, CA
  • Average rainfall in September: 0.1"

The wettest month (with the highest rainfall) is February (7.9").
The driest month (with the lowest rainfall) is July (0").

Average rainfall days in September - San Rafael, CA
  • Average rainfall days in September: 1 days

The month with the highest number of rainy days is January (12.2 days).
The month with the lowest number of rainy days is July (0 days).

Average daylight in September - San Rafael, 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).