San Bernardino National Forest in september: average Weather, Temperature and Climate
Weather in San Bernardino National Forest in september 2025
The weather in San Bernardino National Forest in september comes from statistical datas on the last years. You can view the weather statistics for the whole month, but also by clicking on the tabs for the beginning, the middle and the end of the month.
Average weather throughout september
perfect weather UV index: 7
Weather at 6am
70°F
Clear/Sunny
90% of time
8%
3%
2%
Weather at 12pm
83°F
Clear/Sunny
88% of time
7%
5%
1%
Weather at 6pm
76°F
Clear/Sunny
90% of time
7%
4%
1%
Weather at 3am
67°F
91%
9%
2%
Evolution of daily average temperature and precipitation in San Bernardino National Forest in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in San Bernardino National Forest in september.
The climate of San Bernardino National Forest in september is perfect
the weather in San Bernardino National Forest in september is dry ; it does not rain often (0.4in of precipitation over 1 days).
The climate quite comfortable in this city this month. The thermometer averaged maximum of 83°F. The minimum is 70°F. Thus, the mean temperature average in september in San Bernardino National Forest is 77°F. These temperatures are far removed from those records observed in San Bernardino National Forest in the month of september with a maximum record of 97°F in 2017 and a minimum record of 45°F in 2013. You can expect to have about 11 days with temperatures over 86°F, or 37 of time.
On this month of september, day length in San Bernardino National Forest is generally 12:22. Sunrise is at 05:32 and sunset is at 17:54.
With a perfect climate, this month is advisable to go there.
Seasonal average climate and temperature of San Bernardino National Forest in september
Check below seasonal norms These statistics are compiled from the weather statements of the last years of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 77°F | ||||
| Highest temperature | 83°F | ||||
| Lowest temperature | 70°F | ||||
| Highest record temperature | 97°F (2017) | ||||
| Lowest record temperature | 45°F (2013) | ||||
| Number of days at +86°F | 11 day(s) (37%) | ||||
| Number of days at +65°F | 30 day(s) (100%) | ||||
| Wind | |||||
| Wind speed | 15km/h | ||||
| Wind temperature | 70°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 0.4in | ||||
| Number of days with rainfall | 1 day(s) (2%) | ||||
| Record daily rainfall | 0.5in (2014) | ||||
| Snowfall | 0cm | ||||
| Other climate data | |||||
| Humidity | 36% | ||||
| Visibility | 9.97km | ||||
| Cloud cover | 5% | ||||
| UV index | 7 | ||||
| Daily sunshine hours | 12 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 05:32 | ||||
| Time of sunset | 17:54 | ||||
| Length of day | 12:22 | ||||
| Our opinion about the weather in september | |||||
| Our opinion at whereandwhen.net | perfect | ||||
How was the weather last september?
Here is the day by day recorded weather in San Bernardino National Forest in september 2024:
65°F to 81°F
67°F to 81°F
68°F to 83°F
70°F to 85°F
72°F to 86°F
74°F to 88°F
74°F to 81°F
70°F to 77°F
68°F to 79°F
65°F to 77°F
59°F to 74°F
59°F to 72°F
59°F to 76°F
63°F to 74°F
56°F to 68°F
45°F to 56°F
40°F to 63°F
50°F to 67°F
52°F to 61°F
45°F to 58°F
52°F to 74°F
67°F to 74°F
68°F to 77°F
70°F to 77°F
63°F to 79°F
65°F to 81°F
72°F to 83°F
72°F to 83°F
68°F to 83°F
70°F to 83°F
Map: other cities in California in september
Cities near San Bernardino National Forest:
| San Bernardino in september | perfect weather |
| Palm Springs in september | perfect weather |
| Temecula in september | perfect weather |
| Angeles National Forest in september | perfect weather |
| Cleveland National Forest in september | perfect weather |
| San Clemente in september | perfect weather |
| Joshua Tree National Park in september | perfect weather |
| Newport Beach in september | perfect weather |
| Huntington Beach in september | perfect weather |
| Oceanside in september | perfect weather |
| Los Angeles in september | perfect weather |
| Carlsbad in september | perfect weather |
Click over cities on the map for information about the weather in september.
San Bernardino National Forest
perfect weather
good
tolerable
bad
very bad
Weather data for San Bernardino National Forest in september:
Weather data for San Bernardino National Forest for september are derived from an average of the weather forecast since 2009 in San Bernardino National Forest. There is a margin of error and these forecasts are to be considered as general information only. The weather in San Bernardino National Forest can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to San Bernardino National Forest.