Crochet Temperature Blanket: A Hexagon for Every Day of the Year

Important notes

💡 Pick your layout before you chain a single stitch: the pattern includes an exact 365-motif layout and an exact 366-motif leap-year layout, and they are not interchangeable partway through. Check whether your chosen year is a leap year first

💡 Make a physical color key on day one — tape a short snippet of each yarn next to its temperature range on an index card and keep it in your project bag. Ball bands disappear long before December does

💡 The ivory background (Heartland in Acadia) needs about 2,380 yards — roughly 9.5 skeins. And don't stress about over-buying the temperature colors up front: because the blanket is worked in separate hexagon motifs, a dye lot difference will not be noticeable if you need to purchase an additional skein of a color later in the year

💡 Use your stitch markers strategically: one on the first hexagon of every month and one marking the start of the row you're currently joining. Since assembly runs top down and left to right, these two markers are all you need to find your place after any break

💡 Batch your work: jot the temperature down daily, then crochet weekly. Work all seven two-round center circles in one sitting, then add the final cluster round and join each hexagon in calendar order. It keeps the join-as-you-go sequence intact while fitting real life

💡 Remember the half hexagons are only two rounds, not three. When you're in the rhythm of full hexagons it's easy to add a third round on autopilot — and a full-size motif in the top or bottom row will bulge out of your straight edge

💡 Gauge and finished size: the inner circle (rounds 1-2) of the hexagon measures 2.25 inches in diameter, but gauge is not imperative in this pattern — a slightly thicker worsted weight yarn may simply measure a touch bigger. Your circle motifs may not all match each other exactly, and that's ok; the pattern is very forgiving of these slight variances. The finished afghan measures 49 x 64 inches — a throw sized perfectly for your couch

💡 Start by creating a temperature chart. This blanket maps temperatures in increments of 10 degrees Fahrenheit — everything lower than 0 degrees shares the coldest color and everything higher than 100 degrees the hottest — for 12 colorways in total. Depending on your year and climate, some colors may never get used at all: a year that never hits 100 degrees never touches the hottest skein, and that's fine

💡 Using a different yarn or an unusual gauge? Before buying all your background yarn, work a test hexagon: leave a 6-inch tail before starting round 3 and another 6-inch tail at the end, then unravel the yarn used for round 3 and measure it. Multiply that length by 365 (or 366) days, add a little extra for error, and purchase that quantity of your background color