Las Vegas, Nevada Weather
Thunder finally silent. Day 93 of summer. Read this microseason across nine climate regions →
Las Vegas weather forecast — hour by hour, 7-day outlook, NOAA radar
Conditions updated 6:34 AM PDT · Open-Meteo
- TodaySep 21Light Drizzle later12%0.01″89°72°—
- TuesdaySep 22Overcast——91°69°+2°
- WednesdaySep 23Overcast——90°69°-1°
- ThursdaySep 24Drizzle——93°73°+3°
- FridaySep 25Overcast10%—94°70°+1°
- SaturdaySep 26Overcast——94°73°0°
- SundaySep 27Mostly Clear——93°73°-1°
Air quality now AQI 33 · Good
AQI 33 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 35. Overcast through the UV peak window (cloud cover ~86%) — afternoon ozone should stay flat.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 35. Overcast through the UV peak window (cloud cover ~86%) — afternoon ozone should stay flat.
- Present
- AQI 35
- UV peak
- 0.0 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 4
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
September dries up ditches or breaks down bridges.
- Moonrise
- 4:05 PM
- Moonset
- 1:18 AM
- In sign
- ♑︎ Capricorn
Thunder finally silent
Read this microseason across nine climate regions →
All 72 microseasons on the year wheel →
Las Vegas at a glance
- Today vs. normal: Today averages 81°F (high 89°F, low 72°F), about the 80°F normal for Sep 21
- Last frost: January 24 (1991–2020 median, NOAA station 7 km away)
- Microseason: Sep 21–25
- Planting calendar: September — plant beans, squash, fall brassicas, carrots; harvest summer squash, winter squash
16-Day Forecast — Las Vegas
- Mon91°72°12%
- Tue91°69°8%
- Wed90°69°0%
- Thu93°73°4%
- Fri94°70°10%
- Sat94°73°3%
- Sun93°73°5%
- Mon90°69°9%
- Tue93°71°11%
- Wed95°71°11%
- Thu98°75°7%
- Fri100°78°16%
- Sat95°76°10%
- Sun93°77°6%
- Mon94°75°6%
- Tue86°67°3%
Forecast data from Open-Meteo (CC BY 4.0).
Dedicated forecasts for Las Vegas: hourly weather (72 hours) · 14-day extended forecast
Live wind & temperature near Las Vegas
Interactive wind and temperature map centered on Las Vegas — it loads in your browser. Open the full weather map.
Right now in the garden
Peak growing season
As of September 21, the growing season is at its peak — the first frost (around December 10) is weeks away. Fall transplants go in about 10–12 weeks before the first frost, September 17 to October 1 here. This city's planting calendar for September: plant beans, squash, fall brassicas, and carrots; harvest summer squash and winter squash.
SPC Convective Outlook
Storm Prediction Center — Las Vegas
SPC includes Las Vegas in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWNONENo severe risk
- DAY 3NONENo severe risk
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook.
Sun & seasons in Las Vegas
Las Vegas sits in Clark County, where the year’s longest day runs 14h 38m of daylight and its shortest just 9h 41m — a swing of +4h 56m between the June and December solstices. Clocks spring forward on Sunday, March 8, 2026 and fall back on Sunday, November 1, 2026.
Las Vegas is the state’s largest city. The nearest town Las Vegas tracks is Spring Valley, roughly 10 miles to the S.
Air quality in Las Vegas
Air quality in Las Vegas’s county has held roughly steady since 2020; its cleanest year on record was 2023 (median AQI 61). See the full air-quality history for Las Vegas.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | lettuce, peas, spinach, radishes | radishes, fall brassicas, carrots |
| February | lettuce, peas, spinach, radishes | lettuce, spinach, radishes |
| March | tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes |
| April | tomatoes, peppers, beans, squash | lettuce, peas, spinach |
| May | squash | beans, summer squash, garlic |
| June | squash | tomatoes, peppers, beans, summer squash |
| July | beans, squash | tomatoes, summer squash, winter squash |
| August | tomatoes, peppers, beans, squash | summer squash, winter squash |
| September | beans, squash, fall brassicas, carrots | summer squash, winter squash |
| October | — | peppers, beans, summer squash, winter squash |
| November | garlic (overwinter) | tomatoes, peppers, beans, summer squash, winter squash |
| December | — | tomatoes, peppers, beans, summer squash, winter squash, fall brassicas, carrots |
A year in weather
Las Vegas's warmest month is July (~92°F mean) and its coldest is December (~47°F). Rainfall peaks in February (0.8 inches) and bottoms out in June (0.0 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 49° | 0.7″ | 2 |
| February | 53° | 0.8″ | 2 |
| March | 60° | 0.5″ | 1 |
| April | 66° | 0.2″ | 1 |
| May | 76° | 0.1″ | 0 |
| June | 86° | 0.0″ | 0 |
| July | 92° | 0.1″ | 0 |
| August | 90° | 0.2″ | 1 |
| September | 82° | 0.2″ | 1 |
| October | 69° | 0.3″ | 1 |
| November | 56° | 0.3″ | 1 |
| December | 47° | 0.4″ | 1 |
Regional context
Similar climates Summerlin South, NV, Spring Valley, NV, Winchester, NV
In Las Vegas, NOAA NCEI 1991-2020 normals put January near 49°F and July near 92°F — a 43°F seasonal arc — with about 4 inches of precipitation over 10 rainy or snowy days.
Cool-season fronts carry Las Vegas's rain: February logs 0.8 inches on 1.7 days, against June's 0.0 inches on 0.0 — winter does the heavy lifting in Las Vegas. That cool-season-wet pattern aligns Las Vegas with places like Summerlin South, NV, Spring Valley, NV and Winchester, NV.
Around January 24, Las Vegas sheds its freezing nights — lettuce, chard, arugula, and mustard greens go into Las Vegas's beds. Tomatoes and peppers do best set out two weeks later in Las Vegas, once nights clear the mid-40s°F. Frost returns to Las Vegas near December 10, ending the tender-crop season. Open lawns in Las Vegas whiten first when frost returns.
Similar climates: Summerlin South, NV, Spring Valley, NV, Winchester, NV, North Las Vegas, NV, Nellis AFB, NV.
Frequently asked
- When does it freeze in Las Vegas?
- In Las Vegas, expect the last spring frost near January 24; Las Vegas's first autumn frost comes around December 10.
- What is the rainy season in Las Vegas?
- Las Vegas sees its heaviest rain in February (around 0.8 inches), part of roughly 4 inches a year.
- What is the warmest month in Las Vegas?
- The warmest stretch in Las Vegas comes in July, around 92°F on average.
- What is the coldest month in Las Vegas?
- On average December is the chilliest month in Las Vegas, about 47°F.
- When can I start a vegetable garden in Las Vegas?
- Las Vegas's last frost (January 24) cues hardy greens; in Las Vegas, hold heat-lovers two weeks past.
- How many rainy days does Las Vegas get?
- Las Vegas averages about 10 days with measurable rain or snow each year.
- What hardiness zone is Las Vegas?
- Las Vegas sits in the USDA zone set by December lows near 47°F; the USDA ZIP tool gives the band.
- What is the 10-day forecast for Las Vegas?
- Las Vegas's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
- Will it rain this week in Las Vegas?
- See this week's day-by-day rain chances for Las Vegas in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Las Vegas?
- Current conditions for Las Vegas and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Las Vegas forecast updated?
- The Las Vegas forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Las Vegas?
- Today's sunrise and sunset times for Las Vegas are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
- How accurate is the weather forecast for Las Vegas?
- The next few days in Las Vegas's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Las Vegas sits at 36.2°N; its climate zone is hot desert (Köppen approximation).
ZIP codes in Las Vegas
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