Boulder City Weather in September

Boulder City in September averages 35°C (95°F) during the day and 22°C (72°F) at night. Minimal rainfall is typical for this time of year.

Rainfall in Boulder City in September

Rain is expected on roughly 3 days, totalling around 9.6 mm (0.4 in) for the month. Rain days are few and the total is low, so this is a largely dry month. Any showers that do occur tend to be brief.

Temperature in Boulder City in September

Expect highs of 35°C (95°F) in Boulder City in September, with nights dropping to around 22°C (72°F). Sunshine and humidity can make it feel even warmer than the raw temperature suggests. At 22°C (72°F) overnight, nights are warm enough to sit outside comfortably in light clothing.

Sunshine in Boulder City in September

There are approximately 345 hours of sunshine this month, resulting in mostly clear days.

If you prefer dry days with pleasant temperatures, September may not be the ideal month to visit Boulder City. Our weather planner can help you explore destinations with more pleasant weather conditions.

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Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Boulder City's climate page.

Boulder City Temperature in September

Min Temperature 22°C (72°F)  

Max Temperature 35°C (95°F)  

Chance of Rain 9%  

Precipitation 9.6 mm (0.4 in)  

Rainy days 3 days  

Humidity 25% *  

Sunshine 345 hours *  

Percentage Sunshine 91% *  

* Data from: Las Vegas, the United States of America (32 KM, 20 Miles).

What to Wear in Boulder City in September

Pack for serious heat in Boulder City in September. Prioritize clothing that breathes and doesn't cling or stick. Lightweight cotton, linen, and moisture-wicking fabrics are ideal. A wide hat provides welcome shade. Dry conditions mean you won't need to worry about rain protection. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in Boulder City in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

10/10

Cycling

8/10

Walking

8/10

Barbeque

10/10

Camping

10/10

Outdoor sports

8/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Boulder City's climate page.

More climate data for Boulder City

Temperature Rainfall Sunshine Humidity

See the full Boulder City climate overview or explore weather in the United States of America.