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United StatesThe weather in September in Boulder City
It's hot in September in Boulder City with an average temperature of 35°C. Temperatures this month range from a low of 32°C to a high of 39°C. At night, you can expect temperatures between 19°C and 26°C.
September is a good month to be in Boulder City for sunny weather. You’ll have high temperatures and not too much rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in September for Boulder City, Nevada. 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 45°C in 2020, Boulder City reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 22°C in 2017. The extreme nighttime temperatures ranged from a lowest recorded value of 11°C to a highest value of 31°C.
Rainfall amount
According to weather history, there is only 9,9 mm of precipitation in September. The wind speed is around 4 Bft, mostly coming from the South.
Daily weather in September for Boulder City
Click on any day in September to get detailed info about the usual weather on that day in Boulder City. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| Boulder City | New York | |
|---|---|---|
| Average temperature | 35°C | 27°C |
| Max. temperature | 39°C | 31°C |
| Min. temperature | 19°C | -5°C |
| Total precipitation | 9,9 mm | 57 mm |
| Rainy days | 3 days | 9 days |
Start of September
The month of September starts in Boulder City with hot temps, averaging around 38°C during the day and nights around 26°C.
Mid September
By mid-September, daytime temps drop to around 36°C, with nights around 23°C. Not much precipitation expected during this period. It’s mostly dry and sunny.
End of September
By the end of September, the average daytime temperature in Boulder City is around 33°C, while nighttime temps are about 21°C. There’s hardly any chance of precipitation. The weather will be mostly dry with plenty of sun.
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UV index
The UV index is a maximum of 7 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Check out the climate of Boulder City for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in September in Boulder City, Nevada. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in Boulder City
Temperature in September in Boulder City over the years
Precipitation charts
These charts show the average amount of precipitation in September in Boulder City, Nevada. 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 Boulder City
Total precipitation in September in Boulder City over the years
Daily UV index in September in Boulder City
This chart shows the average daily UV index in September in Boulder City, 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 Boulder City
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Average weather in Boulder City by month
Click on a month below to see detailed weather info for Boulder City. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.