Today in Guyancourt, the unsettled atmosphere will become increasingly unstable as the day unfolds.
Very cloudy. But clear spells will become more and more widespread. Light rain followed by showers in the morning, light showers dying away progressively in the afternoon. Moderate winds.
We are 85% sure of the situation, because in this type of situation, it is difficult to define precisely when the precipitation will begin.
Temperatures will vary between 10 and 12°C.
Tonight, relatively clear skies becoming changeable.
Light winds.
