Recent numerical weather prediction models, including those from the European Centre for Medium-Range Weather Forecasts, indicate Moscow highs on August 28 will likely fall between 18–20°C amid a typical late-summer cooling trend driven by weakening insolation and shifting synoptic patterns. Trader consensus remains balanced across bins because forecast ensembles show moderate spread from variable cloud cover, possible weak frontal passages, and steering by the polar jet stream, which can alter surface temperatures by several degrees. Official observations will rely on standardized measurements at Vnukovo or Domodedovo stations, where even small shifts in boundary-layer mixing or overnight radiative cooling can tip the daily maximum across thresholds like 19°C versus 21°C. Updated model runs in the next 48 hours will likely tighten this range as the event nears.