San Bernardino County
September
Weather in San Bernardino County for September 2024
Your guide to San Bernardino County weather in September - trends and predictions
So far, September 2024 in San Bernardino County is slightly warmer than the historical average by 1.1 °F.
The forecast for the next days in San Bernardino County predicts temperatures to be around 32 °F, close to the historical average.
In general, the average temperature in San Bernardino County at the beginning of September is 33 °F. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 35.4 °F by the end of September.
With an average of 4 rainy days, San Bernardino County experiences minimal rainfall in September, ensuring that most days remain pleasantly dry.
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26
Dry days
4
Rainy days
0
Snow days
28°/15°
Temperatures
15 km/h
Avg max wind
55 %
Avg humidity
San Bernardino County in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  32° | ||||||
| 2  32° | 3 30° | 4  32° | 5 34° | 6 35° | 7  36° | 8 36° |
| 9 37° | 10  34° | 11 31° | 12 29° | 13 27° | 14 28° | 15 28° |
| 16 25° | 17 24° | 18  25° | 19 23° | 20 21° | 21 28° | 22 32° |
| 23 34° | 24 33° | 25 33° | 26 34° | 27 36° | 28 38° | 29 36° |
| 30 38° |
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Temperatures trend during September in San Bernardino County
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 | Patchy rain possible | 32° /18° | 2.3 mm | 7 | |
| Sept. 2 | Light rain | 32° /18° | 1.1 mm | 8 | |
| Sept. 3 | Light rain | 30° /16° | 3.5 mm | 8 | |
| Sept. 4 | Partly cloudy | 32° /17° | 0 mm | 8 | |
| Sept. 5 | Partly cloudy | 34° /19° | 0 mm | 8 | |
| Sept. 6 | Partly cloudy | 35° /20° | 0 mm | 9 | |
| Sept. 7 | Sunny | 36° /21° | 0 mm | 9 | |
| Sept. 8 | Partly cloudy | 36° /22° | 0 mm | 8 | |
| Sept. 9 | Sunny | 37° /23° | 0 mm | 9 | |
| Sept. 10 | Overcast | 34° /21° | 0 mm | 8 | |
| Sept. 11 | Partly cloudy | 31° /18° | 0 mm | 8 | |
| Sept. 12 | Sunny | 29° /15° | 0 mm | 8 | |
| Sept. 13 | Sunny | 27° /15° | 0 mm | 7 | |
| Sept. 14 | Partly cloudy | 28° /14° | 0 mm | 7 | |
| Sept. 15 | Partly cloudy | 28° /16° | 0 mm | 7 | |
| Sept. 16 | Partly cloudy | 25° /13° | 0.1 mm | 7 | |
| Sept. 17 | Partly cloudy | 24° /13° | 0 mm | 6 | |
| Sept. 18 | Cloudy | 25° /13° | 0 mm | 6 | |
| Sept. 19 | Partly cloudy | 23° /16° | 0 mm | 8 | |
| Sept. 20 | Cloudy | 21° /14° | 0 mm | 7 | |
| Sept. 21 | Sunny | 28° /15° | 0 mm | 8 | |
| Sept. 22 | Sunny | 32° /19° | 0 mm | 7 | |
| Sept. 23 | Sunny | 34° /21° | 0 mm | 7 | |
| Sept. 24 | Sunny | 33° /21° | 0 mm | 7 | |
| Sept. 25 | Sunny | 33° /21° | 0 mm | 7 | |
| Sept. 26 | Sunny | 34° /20° | 0 mm | 7 | |
| Sept. 27 | Sunny | 36° /22° | 0 mm | 7 | |
| Sept. 28 | Sunny | 38° /24° | 0 mm | 7 | |
| Sept. 29 | Sunny | 36° /26° | 0 mm | 8 | |
| Sept. 30 | Sunny | 38° /27° | 0 mm | 8 | |
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Important Notice
Our weather forecast for San Bernardino County 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 San Bernardino County forecast closer to your planned date for the most up-to-date weather information.
San Bernardino County in September - FAQ
What are the expected maximum and minimum temperatures in San Bernardino County during September?
During September, expect a variety of temperatures with highs around 28° and lows near 15°, suitable for diverse activities and preferences.
How much rainfall should be expected in San Bernardino County during September?
Expect minimal rainfall in San Bernardino County during September, with a total of 17.4 mm over approximately 4 days. This minimal precipitation is unlikely to significantly impact plans.
What are the typical wind conditions in San Bernardino County during September?
The average wind speed in San Bernardino County during September is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
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Where is San Bernardino County?Get accurate weather forecasts for San Bernardino County, located at latitude 34.063 and longitude -117.651. Stay updated with localized weather information tailored for San Bernardino County.
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