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My blanket so far
After seeing sky for only 3 days this week I decided the light blue can be used for any day were blue was visible,  even just a little bit, even just in my head! 3 days were completely overcast, and one day it rained. I went for blue on the 5th particularly because I had a BRILLIANT day, and that bit of blue I saw just looked brighter for it. 

 
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Colours are picked, I've gone for 2 Rowan Chunky Wool and 2 denim ultra yarns, same thickness. I think they'll work great for a blanket. 

The colours work like this - beige (to represent overcast days), light blue (bit of sky), dark blue (lots of sky) and a dark grey (for when it's a storm and really raining). 

I want to knit a square for each month, so I think I cast on 30 and knit 2 rows each day, but I'm almost a complete beginner having only knit one-colour scarves up to now. ARGH!