Will London have between 15-20mm of precipitation in May?

Why

Probability fell sharply down to 26¢ (toward NO) over the last 24 hours, a 17.5pp shift. Resolution depends on to the total precipitation in mm at heathrow (london airport) in may, 2026, according to the met office — directional traders may be reading new information from that source.

What to verify

• Cross-check the resolution source: to the total precipitation in mm at Heathrow (London Airport) in May, 2026, according to the Met Office — https://www.metoffice.gov.uk/pub/data/weather/uk/climate/stationdata/heathrowdata.txt.
• Read recent whale 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.