Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
Las Vegas's weather subtly changes with the onset of September, barely falling from a sweltering 95.9°F (35.5°C) in August to a tropical 87.4°F (30.8°C). In the month of September, the average temperature in Las Vegas dips to a pleasant 70.2°F (21.2°C) during the night.Humidity
In Las Vegas, the average relative humidity in September is 24%.Rainfall
In Las Vegas, in September, during 5.3 rainfall days, 0.51" (13mm) of precipitation is typically accumulated. In Las Vegas, during the entire year, the rain falls for 57.5 days and collects up to 6.02" (153mm) of precipitation.Snowfall
March through November are months without snowfall in Las Vegas.Daylight
In Las Vegas, the average length of the day in September is 12h and 23min.On the first day of September in Las Vegas, Nevada, sunrise is at 6:12 am and sunset at 7:07 pm. On the last day of the month, sunrise is at 6:35 am and sunset at 6:25 pm PDT.
Sunshine
The average sunshine in September is 10.3h.UV index
In September, the average daily maximum UV index in Las Vegas is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the average person.Note: The UV index of 6 in September translates into these instructions:
Prevent overexposure. Protection from the sun's harmful effects is needed. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Frequently asked questions
Is it hot in Las Vegas during September?
What is the average humidity in September in Las Vegas?
How much does it rain in Las Vegas in September?
When it does not snow in Las Vegas?
How many hours of daylight does Las Vegas have in September?
When are sunrise and sunset in September in Las Vegas?
How long on average sun shines in September in Las Vegas?
What is the UV index reading in September in Las Vegas?
Average temperature in September
Las Vegas, NV
- Average high temperature in September: 87.4°F
The warmest month (with the highest average high temperature) is July (97.3°F).
The month with the lowest average high temperature is December (50°F).
- Average low temperature in September: 70.2°F
The month with the highest average low temperature is July (77.7°F).
The coldest month (with the lowest average low temperature) is December (37.9°F).
Average pressure in September
Las Vegas, NV
- Average pressure in September: 29.85"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.76"Hg).
Average wind speed in September
Las Vegas, NV
- Average wind speed in September: 6.4mph
The windiest month (with the highest average wind speed) is April (8.5mph).
The calmest month (with the lowest average wind speed) is January (5.5mph).
Average humidity in September
Las Vegas, NV
- Average humidity in September: 24%
The month with the highest relative humidity is January (48%).
The month with the lowest relative humidity is June (15%).
Average rainfall in September
Las Vegas, NV
- Average rainfall in September: 0.51"
The wettest month (with the highest rainfall) is July (0.87").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in September
Las Vegas, NV
- Average rainfall days in September: 5.3 days
The month with the highest number of rainy days is July (8.3 days).
The month with the least rainy days is June (1.4 days).
Average snowfall in September
Las Vegas, NV
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.16").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Las Vegas, NV
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Las Vegas, NV
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 10h and 2min
The month with the most sunshine is August (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 7h and 6min).
Average sunshine days in September
Las Vegas, NV
- Average sunshine days in September: 22 days
The month with the most sunshine days is June (27.3 days).
The month with the least sunshine days is July (18.1 days).
Average UV index in September
Las Vegas, NV
- Average UV index in September: 6
The months with the highest UV index are June and July (UV index 8).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Las Vegas, NV
- Average cloud cover in September: 7
The month with the most cloud cover is December (Cloud cover 20).
The months with the least cloud cover are June and August (Cloud cover 6).
Average visibility in September
Las Vegas, NV
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Las Vegas, Nevada, USA
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