But the possibility of heavy rain was far from likely, Qiao said, adding the analysis was by no means an official weather forecast.

The statistical analysis also indicates a high possibility for warm and moist weather in mid August, with about one rainfall every three days, he said.

Extreme high temperatures are not likely, the analysis said, although Chen Zhenlin still cited heat waves along with thunderstrokes, fog, strong wind, and hailstones as the extreme weather conditions which might hit Beijing during the Olympics.