Monsoon storms return to Las Vegas with scattered rain chances into Saturday

Fourth-driest monsoon season continues as valley sees slight shift with rain on the way

After weeks of heat and minimal rainfall, monsoon moisture is finally making a comeback in the Las Vegas Valley. A more active weather pattern is emerging, and while widespread showers are not guaranteed, the atmosphere is primed for afternoon and evening rain this week.

Eight-day outlook in brief

• Tuesday, Sept. 2: Warm and breezy with gusts up to 40 mph. Partial sunshine and a high near 99°F.
  
• Wednesday–Friday: Temperatures ease into the low to mid-90s with a daily 20–30% chance of rain. Expect partly cloudy conditions.
  
• Saturday: Best chance for monsoon activity with scattered thunderstorms possible—watch for sudden downpours or flash flooding.
  
• Sunday–Monday: Dry, sunny, and hot again, with highs flirting with triple digits.
  

Dry season persists

Despite monsoon season being well underway—running from July through September—the rainfall deficit continues. McCarran International Airport has recorded just over 2 inches of rain, slightly below the average of 2.27 inches. A typical Las Vegas year sees around 4.18 inches.

This makes 2025 one of the driest monsoon seasons on record, trailing only behind years like 2020, 2010, and 1944.

Why rain remains elusive

Predicting monsoon storms in the desert is notoriously tricky. Storms often form in the afternoon and dissipate quickly under clear skies. A passing cloud can make or break a storm’s arrival. So while chances hover around 20–40%, actual rainfall may remain spotty and uneven.

What to watch for Saturday

This weekend presents the best shot for noticeable rain. With stronger afternoon dynamics, isolated showers or showers with lightning may develop—bringing welcome relief, but also posing risk for flash flooding or sudden gusty winds.

Image Sources: https://www.reviewjournal.com/local/weather/monsoon-storms-try-to-push-into-las-vegas-valley-as-september-begins-3432618/

Category: Weather
Subcategory: Climate Watch
Date: 09/2/2025