This market asks whether the 5-year average annual temperature at John Wayne Airport (KSNA) in Orange County will exceed the 1991-2020 climate normal of 65.3°F by at least 0.5°F (threshold 65.8°F) during 2026-2030. Current 2026 data from KSNA shows significant warmth: January was +3.8°F above normal, April +5.5°F above, and summer months are running 3-6°F above typical. A persistent marine heatwave (NEP25A) continues off the California coast with sea surface temperatures 3-4°F above normal, rivaling the 1997-98 El Niño and 2014-15 Blob. NOAA maintains an El Niño Watch with 82% probability emerging May-July 2026 and 96% for winter 2026-27. Given the combination of ongoing marine heatwave, developing strong El Niño, and Southern California's documented warming trend (~1°C per decade), the 2026-2030 period is highly likely to exceed the baseline. The current quote of 94 reflects very high confidence in a YES outcome, consistent with external market sentiment favoring warmth.
NOAA Climate Prediction Center indicates 61% chance of El Niño developing May-July 2026, with potential for historically strong event
82% probability of El Niño emergence May-July 2026, with 96% chance persisting through winter 2026-27; could become one of strongest on record
Triple-digit temperatures recorded across Southern California in May 2026, raising fire weather concerns
Climate Prediction Center forecasts 'leaning above normal' temperatures for summer 2026 across Southern California, including coastal areas and inland valleys.
Record warm ocean temperatures observed off Southern California coast, with subtropical waters reaching unprecedented warmth driving atmospheric conditions
