Big Bear Lake
September
Weather in Big Bear Lake for September 2025
Your guide to Big Bear Lake weather in September - trends and predictions
In general, the average temperature in Big Bear Lake at the beginning of September is 28 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 27.1 °F by the end of September.
Precipitation in Big Bear Lake during September is a rare event, with an average of fewer than 2 rainy days.
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Temperatures
Rain 🌧️
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29
Dry days
1
Rainy days
0
Snow days
24°/16°
Temperatures
12 km/h
Avg max wind
32 %
Avg humidity
Big Bear Lake Weather September
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| Sun. | Mon. | Tue. | Wed. | Thu. | Fri. | Sat. |
|---|---|---|---|---|---|---|
| 1  27° | 2 27° | 3 28° | 4 28° | 5  29° | 6  30° | |
| 7  27° | 8  25° | 9 26° | 10 25° | 11 23° | 12 22° | 13 23° |
| 14 23° | 15 20° | 16 12° | 17 17° | 18 18° | 19 16° | 20  14° |
| 21 22° | 22 23° | 23 25° | 24 25° | 25 26° | 26 27° | 27 28° |
| 28 28° | 29 28° | 30 28° |
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Temperatures trend during September in Big Bear Lake
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 | Sunny | 27° /17° | 0 mm | 7 | |
| Sept. 2 | Sunny | 27° /18° | 0 mm | 7 | |
| Sept. 3 | Sunny | 28° /19° | 0 mm | 7 | |
| Sept. 4 | Sunny | 28° /20° | 0 mm | 7 | |
| Sept. 5 | Partly cloudy | 29° /21° | 0 mm | 7 | |
| Sept. 6 | Cloudy | 30° /22° | 0 mm | 7 | |
| Sept. 7 | Patchy rain possible | 27° /20° | 0.5 mm | 6 | |
| Sept. 8 | Patchy light drizzle | 25° /20° | 1.1 mm | 6 | |
| Sept. 9 | Patchy rain possible | 26° /19° | 0.1 mm | 6 | |
| Sept. 10 | Sunny | 25° /16° | 0 mm | 7 | |
| Sept. 11 | Sunny | 23° /14° | 0 mm | 6 | |
| Sept. 12 | Sunny | 22° /14° | 0 mm | 6 | |
| Sept. 13 | Sunny | 23° /14° | 0 mm | 6 | |
| Sept. 14 | Sunny | 23° /14° | 0 mm | 6 | |
| Sept. 15 | Sunny | 20° /11° | 0 mm | 6 | |
| Sept. 16 | Sunny | 12° /4° | 0 mm | 4 | |
| Sept. 17 | Cloudy | 17° /2° | 0 mm | 4 | |
| Sept. 18 | Sunny | 18° /8° | 0 mm | 5 | |
| Sept. 19 | Partly cloudy | 16° /7° | 0 mm | 5 | |
| Sept. 20 | Thundery outbreaks possible | 14° /6° | 0 mm | 3 | |
| Sept. 21 | Sunny | 22° /9° | 0 mm | 6 | |
| Sept. 22 | Cloudy | 23° /18° | 0 mm | 5 | |
| Sept. 23 | Partly cloudy | 25° /19° | 0 mm | 6 | |
| Sept. 24 | Partly cloudy | 25° /20° | 0 mm | 7 | |
| Sept. 25 | Sunny | 26° /17° | 0 mm | 7 | |
| Sept. 26 | Sunny | 27° /17° | 0 mm | 7 | |
| Sept. 27 | Sunny | 28° /21° | 0 mm | 7 | |
| Sept. 28 | Sunny | 28° /20° | 0 mm | 7 | |
| Sept. 29 | Partly cloudy | 28° /19° | 0 mm | 7 | |
| Sept. 30 | Sunny | 28° /20° | 0 mm | 7 | |
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Important Notice
Our weather forecast for Big Bear Lake in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Big Bear Lake forecast closer to your planned date for the most up-to-date weather information.
Big Bear Lake in September - FAQ
What are the expected maximum and minimum temperatures in Big Bear Lake during September?
During September, expect a variety of temperatures with highs around 24° and lows near 16°, suitable for diverse activities and preferences.
How much rainfall should be expected in Big Bear Lake during September?
Rainfall in Big Bear Lake during September is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 1 days seeing any precipitation. Planning without the concern for rain is generally straightforward during this very dry period.
What are the typical wind conditions in Big Bear Lake during September?
The average wind speed in Big Bear Lake during September is 12 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Big Bear Lake
Explore the daily rainfall trends and prepare for Big Bear Lakes September weather 💧
UV exposure in Big Bear Lake during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Big Bear Lake?Get accurate weather forecasts for Big Bear Lake, located at latitude 34.244 and longitude -116.911. Stay updated with localized weather information tailored for Big Bear Lake.
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