Monsoonal Moisture Lingers in Las Vegas Monday Morning
Forecast Outlook - 07/20/2026
LAS VEGAS (FOX5) — Monsoonal moisture remains over Southern Nevada this week, keeping daily chances for afternoon and evening thunderstorms in the forecast while temperatures stay seasonably hot.
Humidity will also keep overnight temperatures warm, offering little relief from the daytime heat. By late week, a weather system moving in from the Pacific Northwest could push drier air into the region while temperatures trend hotter.
EN ESPAÑOL: Persistencia de humedad monzónica antes de un calor superior al promedio
Monday
Monday brings a mix of sun and clouds with a slight chance of afternoon and evening thunderstorms.
The forecast high is near-normal in Las Vegas at 103°. Humidity remains elevated.
Tuesday
Tuesday features another slight chance for isolated afternoon and evening thunderstorms. Storm chances will favor the higher terrain.
The forecast high in Las Vegas is 103°.
Wednesday
Slight storm chances continue Wednesday as monsoonal moisture lingers across Southern Nevada.
The forecast high is 106°. Afternoon clouds are expected to build over the mountains before isolated thunderstorms develop.
Thursday
Thursday trends hotter with a slight chance of isolated afternoon thunderstorms remaining possible.
The forecast high is 110°. Warm overnight temperatures continue as humidity lingers across the region.
Friday
Friday remains one of the better opportunities for isolated thunderstorm development before drier air begins moving in.
The forecast high is 109°. Any storms that form could produce gusty winds and dangerous lightning.
Saturday
The forecast high is 110° as hotter conditions return to the Las Vegas Valley. The weekend marks the beginning of a warming trend that is expected to continue into next week.
A chance for showers and thunderstorms remains in the forecast.
Sunday
Sunday looks hotter and drier as the monsoon pattern weakens.
The forecast high is 111°. Drier air begins filtering into Southern Nevada, gradually lowering thunderstorm chances.
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