Today in Guyancourt, the unsettled weather will become more unpredictable as showers set in.
Overcast in the morning, very cloudy with possibility of thunder storms in the afternoon. Some showers from late morning. Moderate winds.
We are 80% sure of the situation, because the atmosphere might be less unstable and showers rarer than forecast.
Temperatures will vary between 14 and 17°C.
Tonight, clear periods developing.
Possibility of showers Moderate winds.
