Las Vegas Weather Averages
A desert climate dominates the weather for Las Vegas, Nevada. There's plenty of sun year round and often a month goes by with no rain at all.
The temperature here can soar to over 100 degrees Fahrenheit (38 °C) any time from May to September. But the rest of the year has pleasantly balmy conditions.
This page gives detailed information on the annual weather averages for Las Vegas. You can jump directly to data and descriptions for:
The numbers here are historical averages based on climate data gathered at the McCarran International Airport, located near the south end of the Las Vegas Strip.
|80 °F||annual average high||27 °C|
|59 °F||annual average low||15 °C|
Las Vegas' coldest days of the year usually occur in mid December when the daily maximum temperature averages 56 degrees Fahrenheit (13 degrees Celsius) and the minimum averages 38 °F (3 °C).
The year's hottest days are normally in mid July. The average temperature peaks then with daily highs of 105 °F (40 °C) and nighttime lows of 82 °F (28 °C).
|131 days||90 °F maximum or above (32 °C)|
|52 days||40 °F minimum or below (4 °C)|
Every day in Las Vegas has a maximum temperature of over 40 °F (4 °C). Las Vegas averages 70 days a year when the thermometer reaches into the 100s °F (over 37 °C). The 100-degree weather typically happens from May to September.
At night, the thermometer dips to 32 °F (0 °C) or below 8 times a year. Las Vegas can get as cold as 20 °F (-8 °C), but that occurs only about twice a decade. Even when it does freeze at night, it always becomes warm enough during the day to thaw everything.
|4.2 inches||total yearly precipitation||106 millimetres|
|27 days||of rain or snowfall|
February is usually the wettest month of the year in Las Vegas, while June is the driest. Still, no month in this desert city averages more than an inch (25 mm) of precipitation.
|0.3 inches||total snowfall a year||0.8 centimetres|
|0.2 days||with new snow|
Las Vegas gets a little snow about every five years, usually in December or February. Only once a decade on average does the snow covering the ground accummulate to over an inch (2.5 cm).
|85 %||sunshine annually|
|210 days||with clear skies|
The sun's rays reach the ground in Las Vegas during 85 percent of daylight hours on average year round, for a total of 3782 hours annually. Typically on 210 days a year the sky is mainly clear, with at most 30 percent cloud cover.
Sunlight in Las Vegas lasts for 12 hours and 11 minutes a day on average. The shortest days of the year in mid December have 9 hours and 42 minutes of daylight. The year's longest days in mid June last 14:37 from sunrise to sunset.
|30 %||average humidity|
The annual average for relative humidity in Las Vegas ranges throughout the day from 40 percent at 4:00 am to 20 percent at 4:00 pm.
|Local Time||1 am||4 am||7 am||10 am||1 pm||4 pm||7 pm||10 pm|
|9.1 mph||wind speed average||14.6 kph|
April is usually the windiest month for Las Vegas, while the wind is calmest during December and January.
|3 days||precipitation of 0.5 inches (13 mm) or more|
|0 days||snowfall of 1 inch (2.5 cm) or more|
|13 days||with thunderstorms a year|
Only twice a decade on average does Las Vegas have a storm that drenches the city in an inch (25 mm) or more of precipitation during a single day.
Snowstorms that produce over an inch of snow are not at all normal here.
Thunderstorms usually appear over Las Vegas from May to October. They are less common in spring and unusual in winter.
These weather data are long-term historical averages provided by the National Climatic Data Center of the United States. The temperature and precipitation numbers are 1981-2010 normals while the humidity and thunderstorm statistics are 1961-1990 normals.