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

September weather forecast and climate
San Bernardino, CA

Scenic settlement spot on the foot of the iconic San Bernardino Mountains in California, with a view of the snow peaks of the San Gorgiono mountains
Scenic settlement spot on the foot of the iconic San Bernardino Mountains in California, with a view of the snow peaks of the San Gorgiono mountains
The first month of the autumn, September, is still a tropical month in San Bernardino, California, with average temperature varying between 92.8°F (33.8°C) and 60.8°F (16°C).

Temperature

In San Bernardino, California, the average high-temperature is essentially the same as in August - a hot 92.8°F (33.8°C). In September, in San Bernardino, the average low-temperature is 60.8°F (16°C).

Rainfall

In San Bernardino, in September, during 1.4 rainfall days, 0.3" (6.4mm) of precipitation is typically accumulated. In San Bernardino, during the entire year, the rain falls for 38.3 days and collects up to 16" (406.8mm) of precipitation.

Daylight

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

What is the temperature in September in San Bernardino?

The average high-temperature, in September, in San Bernardino, is 92.8°F (33.8°C), while the average low-temperature is 60.8°F (16°C).

How much does it rain in San Bernardino in September?

In San Bernardino, California, in September, it is raining for 1.4 days, with typically 0.3" (6.4mm) of accumulated precipitation.

How many hours of daylight does San Bernardino have in September?

In San Bernardino, California, the average length of the day in September is 12.4h.
Average temperature in September - San Bernardino, CA
  • Average high temperature in September: 92.8°F

The warmest month (with the highest average high temperature) is August (97.3°F).
The month with the lowest average high temperature is December (67.1°F).

  • Average low temperature in September: 60.8°F

The month with the highest average low temperature is August (64.2°F).
The coldest month (with the lowest average low temperature) is December (41.1°F).

Average rainfall in September - San Bernardino, CA
  • Average rainfall in September: 0.3"

The wettest month (with the highest rainfall) is February (4.1").
The driest month (with the lowest rainfall) is July (0").

Average rainfall days in September - San Bernardino, CA
  • Average rainfall days in September: 1.4 days

The month with the highest number of rainy days is February (7.2 days).
Months with the lowest number of rainy days are July and August (0.5 days).

Average daylight in September - San Bernardino, CA
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.4h).
The month with shortest days is December (Average daylight: 9.9h).