I am Nancy. I saw this and wasn't too interested in doing it. However, it just kept nagging me. So one evening when I was talking to my darling husband, he mentioned that it sounded kinda neat. He looked up the highs and lows for our area for last year and created a computer program that allows me to see how my scarf may look. I am doing my scarf in five degree increments. However, I haven't decided if I want to do the daily average, daily low, daily high or two rows in the low and two rows in the high each day (kinda of leaning this way).
Thank goodness all he has to do is a couple lines of code for me to see the differences.
I have only pick generic colors ie light blue versus and specific name and will see what is in my stash before I select the final ones. I will be crocheting this with most likely a simple single crochet.
Hopefully, I make up my mind soon so I can start, but until then I am crocheting some monsters for possible Christmas presents.