Temperature Blanket Generator

A temperature blanket records a year of weather. Each day you crochet one row (or one square or round) in the color matching that day's temperature, usually the high, though some people use the low or the average. By the end of the year, the blanket is a striped picture of the seasons.

The generator divides your temperature range into equal brackets, one per color. With a range of 20–95 °F and 8 colors, each color covers about 9 to 10 degrees.

A row-a-day blanket has 365 rows (366 in a leap year), so plan the size around that:

• Shorter stitches like single crochet make a very long blanket over 365 rows, so many people use a narrow width or a taller stitch.
• Some makers work two rows per day (high and low temperature), which doubles the length, so it suits short rows or a smaller stitch.
• Others make one granny square or hexagon per day and join them at the end.

Each color's yarn depends on how many days fall in its bracket, which depends on your local climate. Buy one or two balls of each color to start, and top up as the year goes on. Look up your area's typical yearly highs and lows from a weather service to set the range, rather than guessing.

Temperature blankets work best with colors that run in a clear sequence from cold to hot, for example violets and blues through greens and yellows to oranges and reds. Make sure neighboring colors have enough contrast to tell apart, especially in the middle of the range where most days fall.

Our color palette generator can help you build a custom range, and the yarn calculator estimates the total yardage for your blanket's size.