News Summary
Las Vegas is preparing for potential rainfall and thunderstorms due to Tropical Storm Mario, which is expected to impact the area later this week. With uncertain rainfall totals, residents are advised to stay informed as the storm brings moisture to the desert. The chances of rain are anticipated to peak on Thursday and Friday, with warnings issued for possible flash floods. High temperatures combined with a lack of precipitation this summer make this weather shift significant for local residents.
Las Vegas is preparing for potential rainfall and thunderstorms as Tropical Storm Mario approaches the Desert Southwest later this week. The storm, which formed off the Pacific coast of Mexico, is expected to introduce moisture into the region, with possible impacts starting as early as Thursday. The National Weather Service (NWS) has indicated that rainfall totals remain uncertain at this time.
Currently, Tropical Storm Mario is located about 20 miles east-northeast of Socorro Island, approximately 280 miles south of Baja California. The storm has maximum sustained winds of 45 mph and is moving west-northwest at a rate of 7 mph. After initially gaining strength to tropical storm level on Friday, Mario weakened to a tropical depression before regaining storm status again on Sunday.
As the storm makes its way towards Las Vegas, summer 2025 has already seen above-normal temperatures paired with below-normal precipitation. The last measurable rainfall at Harry Reid International Airport was recorded on July 3, marking just 0.02 inches during the launch of the typical monsoon season. This year’s monsoon season, which runs from July 1 to September 30, is currently approaching the record for being the fourth driest, following very dry years in 2020, 1944, and 2010.
Up until now, Las Vegas has received a total of 2.05 inches of rainfall in 2025, which is slightly below the seasonal average of 2.27 inches. The typical amount of rainfall expected in the area for a normal year is approximately 4.18 inches. Forecasts for the upcoming week predict temperatures will peak at 97 degrees on Tuesday, with highs expected to settle in the low to mid-90s for the subsequent days.
The forecast indicates a 30% chance of rain on Thursday and Friday, and a flash flood warning has already been issued for parts of the Las Vegas Valley due to the potential for strong thunderstorms. Additionally, smoke advisories remain in place due to wildfire smoke traveling from the Pacific Northwest and Central California.
As for the chances of rain in the weekend ahead, there are expectations for afternoon showers, albeit with a modest 10% chance during specific periods. The extent of the storms will likely hinge on high-pressure systems situated west of the Rockies, which could significantly influence the influx of moisture from the Pacific and affect weather patterns in the area.
Residents of Las Vegas are advised to stay informed of weather conditions as the week progresses, particularly those in areas susceptible to flooding. The shift in weather patterns could bring much-needed relief from the prolonged dry spell experienced this summer, while also highlighting the unpredictability of storm systems in the region.
Deeper Dive: News & Info About This Topic
HERE Resources
Las Vegas Weather Forecast: A Mix of Sun and Storms Ahead
Additional Resources
- AccuWeather: Tropical Storm Mario
- Wikipedia: Hurricane
- Review Journal: Weather in Las Vegas
- Google Search: Tropical Storm Mario
- Click On Detroit: Mario Re-strengthens
- Google Scholar: Tropical Storm Mario
- KTNV: Good Morning Las Vegas
- Encyclopedia Britannica: Weather
- 8 News Now: Mario Re-strengthens
- Google News: Las Vegas Weather
Author: STAFF HERE LAS VEGAS WRITER
LAS VEGAS STAFF WRITER The LAS VEGAS STAFF WRITER represents the experienced team at HERELasVegas.com, your go-to source for actionable local news and information in Las Vegas, Clark County, and beyond. Specializing in "news you can use," we cover essential topics like product reviews for personal and business needs, local business directories, politics, real estate trends, neighborhood insights, and state news affecting the area—with deep expertise drawn from years of dedicated reporting and strong community input, including local press releases and business updates. We deliver top reporting on high-value events such as Electric Daisy Carnival, World Series of Poker, and Consumer Electronics Show. Our coverage extends to key organizations like the Las Vegas Chamber of Commerce and Three Square Food Bank, plus leading businesses in hospitality and entertainment that power the local economy such as MGM Resorts International, Caesars Entertainment, and Las Vegas Sands. As part of the broader HERE network, we provide comprehensive, credible insights into Nevada's dynamic landscape.
