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

September weather forecast and climate
Fremont, CA

A beautiful landscape of winding roads and serene residential estate in Fremont, California
A beautiful landscape of winding roads and serene residential estate in Fremont, California
September, the first month of the autumn, in Fremont, is still a warm month, with average temperature fluctuating between 78.3°F (25.7°C) and 55.6°F (13.1°C).

Temperature

In September, the average high-temperature is essentially the same as in August - a still warm 78.3°F (25.7°C). The average low-temperature, in September, is 55.6°F (13.1°C).

Rainfall

Throughout September, 0.2" (5.3mm) of precipitation is accumulated. Throughout the year, 16.7" (423.6mm) of rain is accumulated.

Ocean temperature

In September, the average ocean temperature in Fremont is 57.6°F (14.2°C).
Note: At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

Daylight

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

What is the temperature in September in Fremont?

In Fremont, California, in September, the average high-temperature is 78.3°F (25.7°C), and the average low-temperature is 55.6°F (13.1°C).

How much does it rain in Fremont in September?

In Fremont, California, in September, 0.2" (5.3mm) of precipitation is typically accumulated.

How cold is the water in September in Fremont?

In Fremont, California, the average seawater temperature in September is 57.6°F (14.2°C). Swimming in 57.6°F (14.2°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

How many hours of daylight does Fremont have in September?

The average length of the day in September in Fremont, California, is 12.4h.
Average temperature in September - Fremont, CA
  • Average high temperature in September: 78.3°F

The warmest month (with the highest average high temperature) is August (79°F).
The month with the lowest average high temperature is December (57.8°F).

  • Average low temperature in September: 55.5°F

The month with the highest average low temperature is August (56.8°F).
The coldest month (with the lowest average low temperature) is January (42.2°F).

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

The wettest month (with the highest rainfall) is February (3.2").
Driest months (with the lowest rainfall) are July and August (0").

Average sea temperature in September - Fremont, CA
  • Average sea temperature in September: 57.5°F

The best month for swimming (with the highest average sea temperature) is August (57.7°F).
Coldest months (with the lowest average sea temperature) are February and April (53.2°F).

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

The month with the longest days is June (Average daylight: 14.7h).
The month with shortest days is December (Average daylight: 9.6h).