Départ
Today in Guyancourt, the largely blue sky won.t last.
Sunny, changeable at times in the afternoon. No precipitation. Light winds.
The reliability of the situation is assessed at 90%.
Temperatures will vary between 15 and 27°C, it will be warm in the afternoon and 4°C above normal.
Tonight, changeable skies becoming less cloudy.
No precipitation. Light winds.
