What is the hottest month in Las Vegas?

July is Las Vegas's hottest month, with the highest average daily high of the year. The month-by-month table above shows Las Vegas's exact average high and low for each month, based on the 1991–2020 climate normals — the standard 30-year reference period meteorologists use.

What is the coldest month in Las Vegas?

December is Las Vegas's coldest month, with the lowest average daily low of the year. The averages-by-month chart above gives the exact average high and low for every month, so you can see how cold a typical winter day runs.

How much does it rain in Las Vegas?

Las Vegas's total annual precipitation and its wettest and driest months are shown in the rainfall-by-month section above. Those figures are 1991–2020 normals — the average monthly precipitation total across that 30-year window — so they reflect a typical year rather than any single wet or dry season.

What months are best to visit Las Vegas?

The most comfortable months in Las Vegas are usually the shoulder seasons — spring and fall — when temperatures sit between the summer peak and winter low and rainfall is moderate. Compare the average high, low, and precipitation for each month in the table above to pick the window that fits the weather you want.

Has Las Vegas gotten hotter?

Yes. The warming-stripes chart above plots Las Vegas's annual mean temperature for every complete year of station data from 1949 to 2025, and the trend line fitted to 1949–2025 rises about 6.5°F (+0.85°F per decade) — recent decades average warmer than the start of that window.

What is the record high temperature in Las Vegas?

Las Vegas's all-time record high — the hottest single day in the station record — is shown in the records section above, along with the date it occurred. Records are drawn from the nearest long-term weather station's full daily history, which begins in 1948, so they capture the most extreme heat on record, not just a typical summer day.

What is the record low temperature in Las Vegas?

Las Vegas's all-time record low and the date it was set appear in the records section above. Like the record high, it comes from the station's full daily history back to 1948, so it reflects the coldest day on record rather than an average winter low.

Las Vegas, Nevada Climate

Las Vegas weather by month — average highs and lows, rainfall, all-time records, and the warming record since 1949

Hottest month: 105°FJuly average high
Coldest month: 40°FDecember average low
Precipitation: 4.2 ina year
Wettest month: February0.8 in on average

1991–2020 NOAA climate normals

At 7:06 AM PDT on Sep 21 it was 72°F in Las Vegas — about the 71°F typical for that hour (estimated from the Sep 21 normal high of 92°F and low of 70°F, interpolated from the monthly normals).

Las Vegas weather by month

Average high, low, and rainfall for every month, from Las Vegas’s 1991–2020 climate normals, the standard 30-year reference period. Each band runs from the month’s average low to its average high: a tall band is a big day-to-night swing.

59°41°

0.6″Jan

63°44°

0.8″Feb

71°51°

0.4″Mar

79°57°

0.2″Apr

89°66°

0.1″May

99°76°

0.0″Jun

105°82°

0.4″Jul

103°81°

0.3″Aug

95°72°

0.3″Sep

81°60°

0.3″Oct

67°47°

0.3″Nov

57°40°

0.5″Dec

Average high → low (°F)Rainfall (inches)1991–2020 normals

Las Vegas monthly weather averages — average high, average low, and rainfall for each month, from the 1991–2020 U.S. Climate Normals (NOAA).
Month	Avg High	Avg Low	Rainfall
January	59°F	41°F	0.6 in
February	63°F	44°F	0.8 in
March	71°F	51°F	0.4 in
April	79°F	57°F	0.2 in
May	89°F	66°F	0.1 in
June	99°F	76°F	0.0 in
July	105°F	82°F	0.4 in
August	103°F	81°F	0.3 in
September	95°F	72°F	0.3 in
October	81°F	60°F	0.3 in
November	67°F	47°F	0.3 in
December	57°F	40°F	0.5 in
Annual	81°F	60°F	4.2 in

Las Vegas’s warming record since 1949

Las Vegas has warmed 6.5°F since 1949 (+0.85°F per decade, 1949–2025 trend)

Not what a typical year looks like, but how the typical year has changed. Each stripe is one complete year’s average temperature at the station, 1949 to 2025, colored against the mean of those years: blue for cooler years, red for warmer ones. The figure under the stripes is the least-squares trend line fitted to 1949–2025 — Las Vegas averages about 6.5°F warmer by that trend than in 1949.

Compared with the national rankingThe fastest-warming cities ranking fits every city to the same years, 1970–2025, so rates compare like for like. Over that window Las Vegas warms at +1.07°F per decade, #1 of 66. The figure above uses the station’s own record, 1949–2025, so the two rates differ.

Las Vegas rainfall by month

Las Vegas averages 4.2 inches of precipitation a year. The wettest month is February and the driest is June.

Las Vegas temperature records

All-time record high: 120°Fset July 7, 2024
All-time record low: 8°Fset January 13, 1963

Records are drawn from the nearest long-term weather station’s full daily history, so they capture the most extreme single day Las Vegas has recorded — not a typical seasonal high or low.

Frequently asked

What is the hottest month in Las Vegas?: July is Las Vegas's hottest month, with the highest average daily high of the year. The month-by-month table above shows Las Vegas's exact average high and low for each month, based on the 1991–2020 climate normals — the standard 30-year reference period meteorologists use.
What is the coldest month in Las Vegas?: December is Las Vegas's coldest month, with the lowest average daily low of the year. The averages-by-month chart above gives the exact average high and low for every month, so you can see how cold a typical winter day runs.
How much does it rain in Las Vegas?: Las Vegas's total annual precipitation and its wettest and driest months are shown in the rainfall-by-month section above. Those figures are 1991–2020 normals — the average monthly precipitation total across that 30-year window — so they reflect a typical year rather than any single wet or dry season.
What months are best to visit Las Vegas?: The most comfortable months in Las Vegas are usually the shoulder seasons — spring and fall — when temperatures sit between the summer peak and winter low and rainfall is moderate. Compare the average high, low, and precipitation for each month in the table above to pick the window that fits the weather you want.
Has Las Vegas gotten hotter?: Yes. The warming-stripes chart above plots Las Vegas's annual mean temperature for every complete year of station data from 1949 to 2025, and the trend line fitted to 1949–2025 rises about 6.5°F (+0.85°F per decade) — recent decades average warmer than the start of that window.
What is the record high temperature in Las Vegas?: Las Vegas's all-time record high — the hottest single day in the station record — is shown in the records section above, along with the date it occurred. Records are drawn from the nearest long-term weather station's full daily history, which begins in 1948, so they capture the most extreme heat on record, not just a typical summer day.
What is the record low temperature in Las Vegas?: Las Vegas's all-time record low and the date it was set appear in the records section above. Like the record high, it comes from the station's full daily history back to 1948, so it reflects the coldest day on record rather than an average winter low.