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United StatesThe weather in September in Barstow
It's hot in September in Barstow with an average temperature of 35°C. Temperatures this month range from a low of 32°C to a high of 38°C. At night, you can expect temperatures between 16°C and 22°C.
September is an awesome month to be in Barstow for sunny weather. You’ll have high temperatures and not much chance of rain this month.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in September for Barstow, California. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 44°C in 2020, Barstow reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 21°C in 2023. The extreme nighttime temperatures ranged from a lowest recorded value of 1°C to a highest value of 29°C.
Rainfall amount
According to weather history, there is only 2,1 mm of precipitation in September. The wind speed is around 4 Bft, mostly coming from the West.
Daily weather in September for Barstow
Click on any day in September to get detailed info about the usual weather on that day in Barstow. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| Barstow | New York | |
|---|---|---|
| Average temperature | 35°C | 27°C |
| Max. temperature | 38°C | 31°C |
| Min. temperature | 16°C | -5°C |
| Total precipitation | 2,1 mm | 57 mm |
| Rainy days | 1 day | 9 days |
Start of September
The month of September starts in Barstow with hot temps, averaging around 37°C during the day and nights around 22°C.
Mid September
By mid-September, daytime temps drop to around 35°C, with nights around 19°C. No precipitation expected during this period, so you can enjoy plenty of sunshine.
End of September
By the end of September, the average daytime temperature in Barstow is around 33°C, while nighttime temps are about 18°C. No precipitation expected at the end of the month; it’ll be mostly sunny.
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UV index
The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Check out the climate of Barstow for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in September in Barstow, California. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in Barstow
Temperature in September in Barstow over the years
Precipitation charts
These charts show the average amount of precipitation in September in Barstow, California. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in September in Barstow
Total precipitation in September in Barstow over the years
Daily UV index in September in Barstow
This chart shows the average daily UV index in September in Barstow, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in September in Barstow
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Average weather in Barstow by month
Click on a month below to see detailed weather info for Barstow. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.