Crochet Temperature Blanket Pattern
Elige tu ciudad y una fecha de inicio, y esta herramienta gratuita convierte las temperaturas diarias reales en un patrón de ganchillo completo para tu cobija de temperatura: una tabla de colores ajustada a tu clima, filas escritas o cuadrados de la abuela, y una lista exacta de hilo por color.
Patterns are produced by deterministic algorithms and machine-validated for stitch-count accuracy — never written by a language model.
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Weather data: NOAA GHCN-Daily. Place search © OpenStreetMap contributors.
What is a temperature blanket?
A temperature blanket records a year of weather in yarn: you crochet one row or one granny square per period — a day, a week, or a month — in a color keyed to that period's temperature. A row-per-day year is 365 rows; week averages make 53 rows; a square-per-month year is a beginner-friendly 12 squares. This page builds the whole pattern from your city's real recorded temperatures, so every color is decided before you start.
How many chains and how much yarn?
At worsted gauge (4 single crochet stitches and 4.5 rows per inch), a 150-stitch row blanket starts on a foundation chain of 151 (150 working chains + 1 turning chain) and comes out about 37.5 in wide; 365 single crochet rows stack to about 81 in tall and use roughly 2,080 yards of yarn. For a past-year temperature blanket, every day's color is already known — so the pattern computes exactly how many yards of each color you need, before you buy yarn.
Mild climates
Mild climates work because the color bands are fitted to your city's own range, not a fixed national chart. San Diego's roughly 48–85 °F year splits into 8 real bands about 4.6 °F wide, so every band actually appears in the blanket. If your range is still narrow, use fewer bands, or color by high + low to double the variety in the same year.