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Las Vegas Sets Dec. 11 Heat Record as Unseasonable Warmth Persists Into Next Two Weeks

A high-pressure ridge off Southern California is keeping the valley unusually warm with little chance of rain.

Overview

  • Las Vegas hit 74°F on Dec. 11, breaking the previous daily record of 72°F from 1939, the National Weather Service confirmed.
  • Forecasts keep highs in the low to mid-70s and overnight lows in the upper 40s to low 50s for roughly the next two weeks.
  • Temperatures are running 10 to 15 degrees above normal under clear, calm conditions tied to the offshore ridge.
  • With minimal precipitation in the outlook, December could end with no measurable rain for only the seventh time on record.
  • Year-to-date rainfall at Harry Reid Airport stands at 4.96 inches, the most since 2019, while the all-time December high of 78°F from 1940 remains unbroken.