How much yarn do I need for a temperature blanket?

A weekly worsted-weight throw uses 500-800 yards total. A daily temperature blanket uses 3,500-5,000 yards. Divide by your number of colors to estimate per-color yardage, then buy extra of each color from the same dye lot.

How many colors does a temperature blanket use?

Most popular temperature blankets use 7-10 colors. Fewer colors create bold stripes; more colors give a gradient effect. Set your temperature thresholds to match your local climate so all colors appear roughly equally.

Daily or weekly temperature blanket - which is better?

Weekly blankets (52 rows) are more manageable and forgiving if you miss days. Daily blankets (365 rows) are more detailed and dramatic but require strict commitment. Both finish in one calendar year.

What yarn weight is best for a temperature blanket?

Worsted weight is the most popular choice because it works up quickly, is beginner-friendly, and shows color changes clearly. DK weight creates a lighter blanket. Avoid super bulky as frequent color changes create thick ridges.

Temperature Blanket Calculator

Yarn & Fabric Calculators

Plan your temperature blanket project — calculate total yarn, per-color skeins, and project timeline based on your local climate and blanket size.

🌡 Project Settings

Blanket Width (inches)

Blanket Length (inches)

Row Schedule

Yarn Weight

Number of Colors

Climate Preset

Yards per Skein

Price per Skein ($)

Your Temperature Blanket

Weekly · Worsted · 7 colors

Total Rows

Total Yards

Total Skeins

Project Duration

1 year

Yards Per Color (avg)

0 yd

💰 Estimated Total Cost

🧶 Yarn Per Color (buy separately)

Temperature distribution is estimated based on your climate preset — actual yarn use per color will vary with local weather. Always buy one extra skein per color. Dye lots matter.

🌈 Temperature Color Scale

Below 0°F / -18°C Cold Cool Mild Warm Hot 100°F+ / 38°C+

Most knitters/crocheters use 7–12 colors with cool tones (purple, blue, teal) for cold temperatures and warm tones (yellow, orange, red) for hot. You pick the exact colors — they’re yours to choose.

Temperature Blanket Planning Guide

What Is a Temperature Blanket?

A temperature blanket is a year-long knitting or crochet project where you work one row (or square) per day or week in a color that represents the day’s temperature. By December 31st you have a wearable record of your year’s weather — no two blankets are alike. Started as a viral trend around 2016, it’s become one of the most popular long-term craft projects.

Daily vs. Weekly Temperature Blankets

A daily blanket (365 rows) creates a densely detailed record but requires strict commitment — missing days means catching up later. A weekly blanket (52 rows) uses the week’s average or highest temperature and is far more manageable. Weekly blankets also tend to look more uniform since extreme outliers get averaged out.

How Many Colors Do I Need?

Most popular temperature blankets use 7–10 colors. Fewer colors (5) create bold graphic stripes; more colors (12+) give a painterly gradient effect. The key is to set temperature thresholds that match your local climate so all colors appear somewhat equally — a desert knitter in Phoenix should set hot-color thresholds much wider than someone in Minnesota.

How Much Yarn Does a Temperature Blanket Use?

A weekly worsted-weight throw uses approximately 500–800 yards total; a daily version uses 3,500–5,000 yards. Each color will use roughly equal yardage IF temperatures distribute evenly, but in practice hot or cold colors often dominate depending on your climate. Always buy 1–2 extra skeins of each color at the start so dye lots match.

Choosing Your Yarn Weight

Worsted weight is the most popular choice for temperature blankets because it works up fast (critical for daily projects), is forgiving for beginners, and shows color changes clearly. DK works beautifully for a lighter blanket. Avoid super bulky — with so many color changes, bulky yarn creates thick, unwieldy seam ridges.

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Frequently Asked Questions

How do I choose temperatures for each color?

Look up last year’s high and low temperatures for your city and divide the full range into equal bands — or weight them toward your most common temperatures. For example, if you live somewhere that rarely drops below 30°F or rises above 90°F, split that 60-degree range into 7 equal ~9° bands. Many knitters use the record all-time high and low to set the outer limits so every possible temperature has a color.

Do I use the high, low, or average temperature?

Completely up to you — just be consistent. Daily highs are the most popular because they feel more dramatic and show summer heat clearly. Daily averages create a smoother, more muted palette. Some knitters use both the high and low to crochet two rows per day (one for each), which doubles the yarn needed.

Can I use any stitch for a temperature blanket?

Yes. Single crochet and double crochet are most common because they create neat, consistent stripes. Knitters typically use garter stitch or stockinette. Avoid textured stitches that obscure the color transitions — the stripes are the whole point. Many crocheters do a foundation single crochet to keep edges tidy.

What if I miss a day?

Just catch up when you can — most knitters look up the actual recorded high for the day they missed (Weather Underground and NOAA keep historical records). Missing a few days is fine; going weeks without working on it is where many people fall behind. Consider a weekly schedule if daily feels too demanding.

How do I keep track of my temperature colors?

Write your color-to-temperature key on a card and tape it to your yarn bag. Apps like Ravelry let you log projects and some crafters use the Notes app or a spreadsheet to log each day’s color. Some knitters tie small labels to each skein with the temperature range.