September weather forecast and climate
San Rafael, CA

What is the temperature in September in San Rafael?

In September, in San Rafael, 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 September, in San Rafael, the rain falls for 1 days. Throughout September, 0.1" (3.3mm) of precipitation is accumulated.
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).

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