**Forecast models from sources including the National Meteorological Center equivalents and international agencies indicate Shenzhen's overnight low on October 15, 2026, will settle in the mid-20s°C amid a stable subtropical pattern.** Light easterly to southeasterly winds (5–15 km/h) limit mixing, while partly cloudy skies permit modest radiational cooling after daytime highs near 29–31°C. Dew points around 21–22°C and humidity near 70–80% moderate the drop, consistent with October climatology where minimums average 21–24°C but current conditions run warmer due to absent cold-air intrusions. Multiple model runs show tight agreement on 24–26°C thresholds, with resolution hinging on the precise timing of the daily minimum and any localized urban heat effects; fresh observational data from Shenzhen stations will clarify the exact value before market close.