Will the lowest temperature in London be 17°C on July 4?

Why

Probability rose sharply up to 99¢ (toward YES) over the last 24 hours, a 68.2pp shift. Resolution depends on wunderground.com — directional traders may be reading new information from that source.

What to verify

• Cross-check the resolution source: wunderground.com — https://www.wunderground.com/history/daily/gb/london/EGLC.
• Read recent large-trade flow on Orrery's market page — $5k+ trades show up alongside the move so you can tell if size is following the price or fading it.
• Market resolves in 4.1h — late-stage moves are often settlement positioning, not new information.