Will a tropical storm affect Las Vegas this week?
Summary
Tropical Storm Mario, developing off Mexico’s Pacific coast, could push moisture into the Desert Southwest late this week and bring showers or thunderstorms to the Las Vegas area. The National Weather Service warns that rainfall totals remain highly uncertain at this stage.
The Las Vegas Valley has had a very dry monsoon season — the fourth‑driest on record — with Harry Reid International Airport recording only 2.05 inches of rain so far in 2025 (the average is 2.27 inches). Forecasters list a 30% chance of rain on Thursday and Friday, with temperatures remaining in the low to mid‑90s.
Key Points
- Tropical Storm Mario is off Mexico’s Pacific coast and regained tropical storm strength over the weekend.
- The National Weather Service says moisture from Mario may reach the Desert Southwest late in the week, increasing shower and thunderstorm chances.
- Rainfall totals are currently uncertain — models disagree on how much moisture will arrive.
- Las Vegas has experienced a very dry monsoon season (fourth‑driest on record); airport rainfall so far in 2025 is 2.05 inches.
- Short forecast: Tuesday ~97°F (overnight 76°F); Wednesday high in the 90s; Thursday mid‑90s with ~30% rain chance; Friday ~91°F with ~30% rain chance.
Why should I read this?
Quick and useful: if you live in or are visiting Las Vegas this week, you’ll want to know that there’s a small but real chance of showers later in the week. Not headline‑making yet, but worth keeping an eye on the forecast and maybe bringing a light waterproof layer or an umbrella if you’ve got outdoor plans.
Context and Relevance
This matters because tropical remnant moisture has produced impactful weather in the region before (notably Hurricane Hilary’s remnants in 2023). With Las Vegas emerging from a very dry monsoon season and ongoing drought concerns, any measurable rainfall could be locally significant. The update is relevant to residents, event planners and travellers who need to monitor changing forecasts through the week.
Author style
Punchy: A short, practical weather brief — enough detail to decide if your outdoor plans need a Plan B, without wading through technical model jargon.
