My mother when she was alive would not like days like today as for her they were dark, depressing and overcast. She would always remark "today is so depressing". I later learned that there are others like her who are affected by the weather which has a name (seasonal affective disorder or SAD for short).
The importance of meditating everyday is that you can get in the habit of feeling peace regardless of weather, finances, relationships, jobs, etc. What an important benefit!