This scarf shows a comparison of daytime highs, or if you prefer, night time lows for two widely spaced years. The 2 edges of the scarf are knitted separately and then joined at the center with an Icord panel. All the ends are hidden under the center panel of the scarf so there is no sewing at all, except to sew in the very last end. The wavy edge of the scarf adds interest and also marks each 2 week interval during the year. You can choose to mark the seasons with the center panel, choose one solid color, or use a rainbow effect. The scarf is fully reversible.

In the US, all the daily temps back to the 1880s are available on this website https://www.ncdc.noaa.gov/cdo-web/search A Google search for ‘daily temperature records’ followed by your country name will likely find similar records for other countries. Choose whichever years you like for your scarf but include a recent year as most of the effects of climate change have been seen over the last few years.

The pattern uses sock weight yarn, 1 ball for each 10 degree F temperature change. If you are using a Celsius scale or are in a region where there are not great temperature differences, you may want to use a 5 degree change for each color.
The sample was knitted with 7 colors of Ice Yarns Baby Merino and 2 colors of Lana Grossa Meilenweit, 50g each.