Los Angeles Daily Temperature High — contract UHLAX_072526_78

What's driving it

• • Historic March heatwave shattered high-temperature records across the US West (The Guardian, Mar 19), signaling a trend of above-normal temperatures that reduces the likelihood of a mild 78°F day.
• • The ocean off California has been breaking heat records (Los Angeles Times, Apr 16), which tends to suppress afternoon marine-layer cooling and keep coastal temperatures elevated.
• • The market resolves to a single exact temperature — a binary outcome where even a one-degree deviation means No — so the high 96% odds reflect the mechanical difficulty of hitting a precise number rather than a forecast of extreme heat.

What to watch

• • National Weather Service 7-to-10-day outlooks for the Los Angeles area, typically released around July 19–23, would provide a specific forecast for July 26; a predicted high near 78°F would sharply increase Yes odds, while a forecast of 80°F+ would push them lower.
• • Any surprise heat-wave warning for Southern California in the week before July 26 (e.g., from NWS or NOAA) would lower Yes odds further, as it would make a cool 78°F reading even less plausible.
• • If a strong El Niño or La Niña update is issued in early July, it could shift the seasonal temperature outlook; a cooler-than-normal signal would slightly raise Yes odds, while a warmer signal would drop them.