Today in Grand-Lancy, high humidity will give rise to unsettled weather in the early part of the day.
Overcast skies clearing up during the morning, very cloudy with possibility of thunder storms in the afternoon. Drizzle fading over time in the morning, possibility of showers in the afternoon. Moderate winds.
We are 80% sure of the situation, because the atmosphere might be less unstable and showers more frequent than forecast.
Temperatures will vary between 17 and 24°C.
Tonight, good clear periods but cloud building.
Risk of showers in the early hours. Light winds.