here is the weather forecast region by region
The weather will be generally gray on Tuesday, but often dry despite the risk of some light transient drizzle, according to the forecasts of the MRI. Mists and mists will always be present in places in the Ardennes. The maxima will be between 5 degrees in Hautes-Fagnes and 11 degrees in the west of the country. The southwesterly wind will often be moderate and in Upper Belgium weak.
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On Tuesday evening and the next night, cloudy fields will remain predominant with, especially in the northern half of the country, some light rain or drizzle. In the Ardennes, the fog will persist. The minima will be between 3 degrees in Haute Ardenne and 9 degrees in the west. The wind will be light in Upper Belgium and often moderate elsewhere in the south-west sector.
On Wednesday, the weather will be calm with a risk of reduced visibility in the Ardennes. The weather will often be dry with some drizzle in places, mainly in the north. The sky will generally be very cloudy with only a few slight clearings. The maximums will vary between 6 and 10 degrees, with a weak west to southwest wind.
Thursday also, the weather will be calm, often gray and dry in most areas despite the risk of some drizzle in places. The maximum will be between 4 and 9 degrees, in a weak wind without precise direction.
On Friday, fields of low cloud will prevail and at times be thick enough to lead to some drizzle. The maximum will be between 5 and 9 degrees, under a weak to moderate north-easterly wind.