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). Marked by a significant temperature drop from daytime highs, the average nighttime temperature in Big Bear lowers to a cold 41.5°F (5.3°C) throughout September.Rainfall
In September, the rain falls for 2.2 days. Throughout September, 0.43" (11mm) of precipitation is accumulated. Throughout the year, in Big Bear, 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 in Big Bear. Throughout September, Big Bear receives 0.12" (3mm) of snow. In Big Bear, during the entire year, snow aggregates up to 72.2" (1834mm).Daylight
The average length of the day in September is 12h and 22min.On the first day of September in Big Bear, sunrise is at 6:21 am and sunset at 7:12 pm. On the last day of the month, sunrise is at 6:41 am and sunset at 6:32 pm PDT.
Frequently asked questions
What is the average September temperature in Big Bear?
How much does it rain in Big Bear in September?
When does it start snowing in Big Bear?
What is the average length of the day in September in Big Bear?
What time are sunrise and sunset in September in Big Bear?
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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