Big Bear
California, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Big Bear, CA

Aa reflection of the colorful sunset sky in the calm lake waters at Big Bear Lake, California
Aa reflection of the colorful sunset sky in the calm lake waters at Big Bear Lake, California
September, the first month of the autumn, in Big Bear, is still a warm month, with average temperature varying between 74.1°F (23.4°C) and 41.5°F (5.3°C).

Temperature

In September, the average high-temperature slightly decreases, from a moderately hot 79.9°F (26.6°C) in August, to a still warm 74.1°F (23.4°C). The average low-temperature, in September, is 41.5°F (5.3°C).

Rainfall

In Big Bear, during September, the rain falls for 2.2 days and regularly aggregates up to 0.4" (10.7mm) of precipitation. In Big Bear, during the entire year, the rain falls for 43.5 days and collects up to 20.1" (509.3mm) of precipitation.

Snowfall

Months with snowfall in Big Bear are January through May, September through December. September is the first month it typically snows. Throughout September, Big Bear receives 0.1" (2.5mm) of snow. Throughout the year, in Big Bear, California, 72.2" (1833.8mm) of snow is accumulated.

Daylight

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

What is the temperature in September in Big Bear?

In September, in Big Bear, the average high-temperature is 74.1°F (23.4°C), and the average low-temperature is 41.5°F (5.3°C).

How many days does it rain in September in Big Bear?

In Big Bear, in September, it is raining for 2.2 days, with typically 0.4" (10.7mm) of accumulated precipitation.

When does it start snowing in Big Bear?

September is the first month it typically snows in Big Bear, California. Throughout September, Big Bear receives 0.1" (2.5mm) of snow.

What is the average length of the day in September in Big Bear?

In September, the average length of the day in Big Bear is 12.4h.
Average temperature in September - Big Bear, CA
  • Average high temperature in September: 74.1°F

The warmest month (with the highest average high temperature) is July (81.2°F).
The month with the lowest average high temperature is January (47°F).

  • Average low temperature in September: 41.6°F

The month with the highest average low temperature is July (48.2°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).

Average rainfall in September - Big Bear, CA
  • Average rainfall in September: 0.4"

The wettest month (with the highest rainfall) is January (4.5").
The driest month (with the lowest rainfall) is June (0.2").

Average rainfall days in September - Big Bear, CA
  • Average rainfall days in September: 2.2 days

Months with the highest number of rainy days are January and February (6.3 days).
The month with the lowest number of rainy days is June (0.8 days).

Average snowfall in September - Big Bear, CA
  • Average snowfall in September: 0.1"

The month with the highest snowfall is February (18.1").
Months with the lowest snowfall are June, July and August (0").

Average snowfall days in September - Big Bear, CA
  • Average snowfall days in September: 0 days

Months with the highest number of snowfall days are January and February (3.8 days).
Months with the lowest number of snowfall days are July, August and September (0 days).

Average daylight in September - Big Bear, 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).