Research into filming days

We have ordered the camera for the 21st February for a three day period. Here is a print screen of the three day weather forcast;

Our initial plan was to film everything in one day, and then go back to specific scenes that need re-filming either the same day or in the three day period. The weather forcast (in exception of the 19th) is fairly the same with dull dreary weather which fits with our chosen genre and feeling we're trying to convey.

We will film in the morning of the 21st as it is invariably fine in the morning and the weather generally worsens as the day progresses. (Only if the filming is neccesary)