Shenzhen's overnight low will stay above 22°C on August 29 and NOAA's Shenzhen Bao'an International Airport Station will post the lowest whole‑degree reading under the Temp column. Forecasts point to a mid‑20s night with BBC at 25°C and AccuWeather at 25.7°C to 26.9°C, matching Shenzhen's average l…