Normal weather for Barstow in September
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.
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.
Barstow in September |
London | ||
|---|---|---|---|
 Average Temperature |
35°C | 20°C | |
 High Temp |
38°C | 22°C | |
| Low Temp |
32°C | 17°C | |
 Total Precipitation |
2,1 mm | 44 mm | |
| Rainy Days |
1 day | 8 days | |
Start of September
The month of September starts in Barstow with hot temperatures, averaging around 37°C during the day and nights close to 22°C. You won’t see any precipitation in the first days of the month, it’s all sunny skies. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.
Mid-September
By mid-September, the average daytime temperature drops to around 35°C, with nights close to 19°C. No precipitation expected during this period, so you can enjoy plenty of sunshine.
Temperatures vary between day and night, so it’s smart to wear layers. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal for the day. In the evening and morning, a T-shirt, light trousers or skirt, and a light jacket are recommended.
End of September
By the end of September, the average daytime temperature in Barstow will be around 33°C, with nights close to 18°C. No precipitation expected, with plenty of sunshine on the horizon.
As it gets cooler in the evening, it’s best to wear layers. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal for the day. In the evening and morning, a T-shirt, light trousers or skirt, and a light jacket are recommended.
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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.
Is September a good time to visit Barstow?
September is a fantastic month to be in Barstow for sunny weather. You’ll get high temperatures and little chance of rain this month.
Temperature records for Barstow in September
With 44°C, Barstow hit the highest temperature in the last 10 years in September 2020. The lowest daytime temperature in this month was 21°C in 2023. The extreme night temperatures ranged from a low of 1°C to a high of 29°C.
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Daily Temperature in September in Barstow
This chart shows the average daily temperatures, both day and night, for each day in September in Barstow, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in September in Barstow
The chart below shows the average daily precipitation in September for Barstow, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for September, you can expect about 1 day of rain in Barstow.
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.
Temperature in September in Barstow Over the Years
This chart shows the average temperature in September in Barstow, measured in degrees Celsius, over the past years.
Total Precipitation in September in Barstow Over the Years
This chart shows the average precipitation in September in Barstow, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in September for Barstow
Click on a specific day in September for detailed info on the typical weather on that day in Barstow. Check out the historical temperatures and precipitation over the past 10 years on this day.
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.
