Today's Weather Outlook: December 21, 2025

Sunday, December 21, 2025, in Las Vegas features cloudy weather throughout the day. Highs will reach approximately 66-72°F, while lows settle at 46-48°F overnight. Precipitation chances are near 0-10%, with winds at 7 mph and a UV index of 2.

This mild setup contrasts with colder December norms elsewhere, making Las Vegas appealing for winter travel. Hourly forecasts suggest steady cloud cover without significant changes, ensuring stable conditions from morning through evening.

Current developments show no major weather disruptions, allowing normal operations for flights, events, and attractions. Dress in layers for the temperature drop after sunset.

December 2025 in Las Vegas maintains a mild winter profile, with average temperatures ranging from 39°F lows to 57-64°F highs. Expect about 1 rainy day and 26 mm of rainfall total, alongside 11.3 hours of daily sunshine on average.

Forecasts indicate variability, such as highs up to 73°F mid-month, but December 21 stays typical at 67°F high and 47°F low. This supports outdoor pursuits like hiking or shows without heavy winter gear.

Compared to last year’s similar cloudy day at 66°F, 2025 shows consistent patterns. Winter precipitation remains insignificant, minimizing flood or travel risks.

Impacts and Travel Tips

Today's mild weather enhances visitor experiences, from casino hopping to desert tours. Low wind and precipitation support comfortable sightseeing, though clouds may temper UV exposure.

Plan for evening cools by packing jackets; hydration stays key in the dry desert air. Events like holiday shows benefit from these stable conditions without weather delays.

Longer-term, December's cool climate—far from 'very cold' extremes—draws crowds seeking winter escapes. Monitor updates for any shifts in cloud cover or rare rain.