Official National Weather Service forecasts for Miami on October 4 project a daily high near 88–90°F under mostly sunny skies with easterly winds around 10–12 mph and heat indices near 100°F. Recent observations show highs of 87–88°F the prior two days amid a stable subtropical pattern with minimal cloud cover or precipitation. This supports the market’s overwhelming 99% implied probability on 88–89°F, reflecting trader alignment with NWS and ensemble model consensus. An unexpected increase in afternoon cloudiness or isolated showers could cap the maximum below that range, while clearer conditions or a slight wind shift might push readings to 90°F or higher, though both remain low-probability outcomes given current steering patterns and moisture profiles.