Today in Alton,improving during the day:the sky will clear. Good clear periods but with plenty of cloud in the morning, cloud and sun in the afternoon. No precipitation. Moderate winds.
The reliability of the situation is very good.
Temperatures will vary between 25 and 35°C, it will be very warm in the afternoon.
Tonight,changeable skies with risk of storms. Showers starting in the middle of the night. Moderate winds.