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Las Vegas' weather is typical of the Mojave Desert, in which it is located, marked with hot summers, mild winters, abundant sunshine year-round, and very little rainfall. High temperatures in the 90’s Fahrenheit are common in the months of May, June, and September and temperatures normally exceed 100 °F (38 °C) most days in the months of July and August, with very low humidity, frequently under 10%.
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The hottest temperature ever recorded is 117 °F (47 °C) set twice, on July 19, 2005 at McCarron International Airport and July 24, 1942, at present-day Nellis Air Force Base.
Winters are cool and windy, with the majority of Las Vegas' annual 4.49 in (114 mm) of rainfall coming from January to March.[2] Winter daytime highs are normally around 60 °F (16 °C) and winter nighttime lows are usually around 40 °F (4 °C). The coldest temperature ever recorded is 8 °F (-13 °C) set on January 25, 1937, at present-day Nellis Air Force Base.
Showers occur less frequently in the Spring or Autumn. July through September, the Mexican Monsoon often brings enough moisture from the Gulf of California across Mexico and into the southwest to cause afternoon and evening thunderstorms. Although winter snow is usually visible from December to May on the mountains surrounding Las Vegas, it rarely snows in the city itself.
In Summerlin, which is at an average elevation of 2,500 feet, temperatures are normally 3-5° cooler than the Strip and 10° cooler than the eastern part of Las Vegas.
Average Las Vegas Weather & Temperatures
All figures are according to National Weather Service records for the Las Vegas Valley. |
Month |
High |
Low |
January |
58° F (14° C) |
34° F (1° C) |
February |
63° F (17° C) |
39° F (4° C) |
March |
69° F (21° C) |
44° F (7° C) |
April |
78° F (26° C) |
51° F (11° C) |
May |
88° F (31° C) |
60° F (16° C) |
June |
100° F (38° C) |
69° F (21° C) |
July |
106° F (41° C) |
74° F (23° C) |
August |
103° F (39° C) |
74° F (23° C) |
September |
95° F (35° C) |
66° F (19° C) |
October |
82° F (28° C) |
54° F (12° C) |
November |
67° F (19° C) |
43° F (6° C) |
December |
58° F (14° C) |
34° F (1° C) |
Average Las Vegas Weather & Rainfall
All measurements in inches. Figures according to National Weather Service records for the Las Vegas Valley. |
Month |
Precipitation |
January |
0.50 |
February |
0.45 |
March |
0.40 |
April |
0.20 |
May |
0.20 |
June |
0.20 |
July |
0.45 |
August |
0.55 |
September |
0.30 |
October |
0.25 |
November |
0.45 |
December |
0.30 |
Record Rain, Snow
All figures are according to National Weather Service records for the Las Vegas Valley. Amounts given are for a 24-hour time period. |
Record rainfall |
Aug. 20-21, 1957 |
2.59 inches |
Record snowfall |
Jan. 4-5, 1974 |
9 inches |
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