Plenty of fresh air for weekend and early in week

It’s looking like a great weekend to be outdoors, followed by a great week of weather even if you have to work.
Satuday is looking mainly sunny, featuring light winds and high of about 16 C.
Saturday night is expected to drop  to 3 C, with a risk of frost in some areas.
Sunday is looking much the same, albeit a teeny bit warmer, with a high of about 18 C. Sunday night should fall to 4 C, with no mention of frost yet.
Monday is looking sunny and warmer still with a high of 20 C and a l