Weather in September
Temperature
September signifies a gentle decline in Big Bear's average high-temperature, easing from a warm 79.9°F (26.6°C) in August to a still moderately hot 74.1°F (23.4°C). Big Bear, after an intense day, registers a significant cooling to an average low-temperature of 41.5°F (5.3°C) throughout September.Rainfall
In Big Bear, during September, the rain falls for 2.2 days and regularly aggregates up to 0.43" (11mm) of precipitation. Throughout the year, there are 43.5 rainfall days, and 20.04" (509mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall. September is the first month it typically snows. Throughout September, Big Bear receives 0.12" (3mm) of snow. Throughout the year, 72.2" (1834mm) of snow is accumulated.Daylight
The average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 6:21 am and sunset at 7:12 pm. On the last day of September, sunrise is at 6:41 am and sunset at 6:32 pm PDT.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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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 least rainfall) is June (0.2").
Average rainfall days in September
Big Bear, CA
- Average rainfall days in September: 2.2 days
The months with the highest number of rainy days are January and February (6.3 days).
The month with the least 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").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Big Bear, CA
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (3.8 days).
The months with the least snowfall days are July, August and September (0 days).
Average daylight in September
Big Bear, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
Big Bear, California, USA
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