Official forecasts from the Met Office and supporting models indicate a maximum of 22–23°C in London on October 5, driven by high pressure, sunny intervals after early fog, and mild southwesterly flow keeping conditions dry and warmer than the 17°C seasonal average. Recent observations show the UK maintaining an elevated autumn warmth pattern, with prior days reaching 22°C, though a shift to cooler, wetter Atlantic systems is expected midweek. This consensus underpins trader positioning, with implied probabilities highest for 22°C followed closely by 23°C and 21°C, reflecting minor model spread on peak timing and urban heat effects. Updated runs and observational data ahead of resolution will refine the exact threshold.