Official forecasts from the Met Office indicate a daytime maximum of 25°C across London on August 5, 2026, aligning closely with the market's heaviest weighting on that outcome. This reflects a transitional pattern following earlier summer warmth, with moderating Atlantic airflow and increased cloud cover limiting further intensification. Recent observations from sites like Northolt show highs near 27°C the prior day, establishing a baseline that models now temper by 1–2°C for today. Minor model spread around steering winds and localized heating supports secondary probabilities for 24°C or 26°C, while probabilities drop sharply beyond 27°C due to the absence of strong high-pressure persistence or southerly flow that could push values higher. Updated guidance through the afternoon will refine these implied odds as real-time data arrives.