Free Pattern: How to Knit a Garter Stitch Temperature Blanket with Worsted Yarn

A Year-Round Project That Tells the Story of Your Weather

There is something quietly magical about a temperature blanket. Over the course of a full year, you knit one or two rows every single day, choosing your yarn color based on the temperature outside. By December 31st, you hold in your hands a soft, striped record of every weather event your region experienced — the brutal cold snaps of January, the tentative warmth of early spring, the blazing heat of July, and the slow cooling of autumn. It is part craft project, part journal, part data visualization, and entirely personal.

This free pattern from Fifty Four Ten Studio walks you through everything you need to know to knit a garter stitch temperature blanket using worsted weight yarn. We have chosen garter stitch deliberately: it is the most beginner-friendly stitch in knitting, it lies beautifully flat, and it gives your finished blanket a satisfying ridged texture that makes every row pop. Whether you are brand new to knitting or a seasoned maker looking for a meaningful long-haul project, this one is for you.

What Is a Temperature Blanket?

A temperature blanket is a yearlong knitting (or crochet) project in which you assign a color of yarn to each temperature range and knit a set number of rows every day based on that day’s recorded temperature. Most knitters record either the daily high, the daily low, or an average of the two — whatever feels most meaningful to you.

The result is a striped blanket that reads like a visual calendar of your year. You can look at your finished piece and say, “There’s February — all those dark blues.” You can find the heat wave in August, the surprise cold snap in May, the golden stretch of perfect October days. It becomes an heirloom piece that is unique to your location and your year, something no one else in the world will ever have exactly the same version of.

Temperature blankets have grown enormously in popularity over the last decade, and for good reason. They give everyday knitters a reason to pick up their needles daily, they use up yarn stash efficiently, and they result in something genuinely beautiful and meaningful.

Why Garter Stitch?

Garter stitch is created by knitting every single row. There is no purling, no complicated stitch pattern to remember, and no right side or wrong side to keep track of. Both sides of the fabric look identical, which makes it ideal for a blanket that will be flipped and folded and used from every angle.

Beyond its simplicity, garter stitch has practical advantages for a temperature blanket. It lies flat naturally, without the rolling edges that stockinette stitch produces. It has a lovely elasticity and drape, especially in worsted weight yarn. And the horizontal ridges it creates make every color stripe stand out clearly against the next, giving your temperature blanket a graphic, modern look that reads beautifully from across a room.

Why Worsted Weight Yarn?

Worsted weight yarn hits a sweet spot for a project like this. It works up quickly enough that your daily rows do not take long — usually no more than ten or fifteen minutes once you are settled — but it produces a fabric with real weight and coziness. A worsted weight temperature blanket will be genuinely warm and snuggly, suitable for use on a bed, couch, or as a throw.

Worsted weight is also widely available, affordable, and comes in an enormous range of colors, which is essential when you are building a palette of eight to twelve different shades. Budget-friendly options like Lion Brand Pound of Love, Caron Simply Soft, Red Heart With Love, or Paintbox Simply Worsted are all excellent choices. If you prefer a more luxurious feel, look at Cascade 220 Superwash or Malabrigo Rios for a step up in softness while staying in the worsted weight family.

Materials

Before you begin, gather everything you will need for the year ahead. Here is what this pattern calls for:

Yarn: Worsted weight yarn (weight 4) in your chosen temperature colors. You will need approximately 200–250 yards per color for a standard lap blanket (roughly 50 inches wide). If you want a larger throw or bed blanket, increase accordingly.

Needles: US size 7 (4.5mm) or US size 8 (5.0mm) straight or circular needles. Because this blanket grows long over the year, circular needles — even though you will knit flat — are highly recommended. A 32-inch or 40-inch circular needle will hold all your stitches comfortably without straining.

Gauge: Approximately 18 stitches and 36 rows per 4 inches in garter stitch on US 7 needles with worsted weight yarn. Because you are knitting a blanket and not a garment, gauge does not need to be precise — but it will affect your finished dimensions, so swatch if you want a specific size.

Notions: Scissors, yarn needle for weaving in ends, stitch markers (optional but helpful), and a notepad or temperature-tracking app for recording your daily data.

Cast-on count: For a blanket approximately 50 inches wide at the gauge above, cast on 225 stitches. For a narrower lap blanket around 40 inches, cast on 180 stitches. For a full throw around 60 inches, cast on 270 stitches. Adjust to your preference.

Choosing Your Color Palette

This is one of the most personal and enjoyable parts of planning a temperature blanket. You need to decide how many temperature ranges you want and which color you will assign to each one.

A common approach is to use ten to twelve colors, creating ranges of about ten degrees each. Here is a sample palette framework to get you started. Keep in mind that this is just a template — adjust the ranges to suit your climate. Someone in Phoenix will need more high-temperature colors; someone in Minnesota will need more cold-weather shades.

Below 0°F / Below -18°C: Deep navy or black
0–9°F / -18 to -13°C: Dark purple
10–19°F / -12 to -7°C: Bright purple or violet
20–29°F / -6 to -2°C: Icy blue
30–39°F / -1 to 4°C: Cornflower or medium blue
40–49°F / 4 to 9°C: Sky blue or periwinkle
50–59°F / 10 to 15°C: Soft teal or sage green
60–69°F / 15 to 20°C: Bright green or chartreuse
70–79°F / 21 to 26°C: Sunny yellow
80–89°F / 27 to 32°C: Orange or peach
90–99°F / 32 to 37°C: Coral or red-orange
100°F and above / 38°C and above: Deep red or magenta

Lay your yarn out in order from coolest to warmest before you commit. The colors should flow in a gradient that feels natural — cool blues and purples at one end, warm reds and oranges at the other, with greens and yellows bridging the middle. This gradient effect is what makes a finished temperature blanket so visually striking.

Setting Up Your Temperature Tracking System

Before January 1st, decide how you will track temperatures. Options include:

Weather apps: Most smartphone weather apps (Weather.com, Weather Underground, AccuWeather) allow you to look up past daily highs and lows. This is helpful if you miss a day or two.

A dedicated journal: Some knitters keep a small notebook next to their project where they log the date, temperature, and color used. This becomes a charming companion document to the blanket itself.

A spreadsheet: A simple spreadsheet with columns for date, temperature, and color is easy to maintain and makes it simple to catch up if you fall behind.

You will also want to decide whether you are recording the daily high, the daily low, or an average. Many knitters use the daily high because it tends to produce the widest range of colors across the year, leading to a more varied and interesting blanket. Others use an average because it feels more representative of how the day actually felt. There is no wrong answer — just pick one approach and stick with it consistently throughout the year.

The Pattern

Abbreviations

k: knit
CO: cast on
BO: bind off

Instructions

CO your desired number of stitches using a long-tail cast on or any cast on you prefer. The long-tail cast on produces a neat, stretchy edge that complements garter stitch nicely.

Every row: Knit all stitches.

That is the entire stitch pattern. Every row, from the first day of January to the last day of December, you will simply knit across. The magic is entirely in the color changes.

Daily Rows

Each day, knit 2 rows in the color that corresponds to that day’s temperature. Two rows in garter stitch creates one visible ridge, which gives a clean stripe for each day. At the end of the year, you will have 730 rows total (or 731 in a leap year), which translates to 365 ridges — one for each day.

If you prefer a chunkier blanket or want it to grow faster, you can knit 4 rows per day instead of 2. This doubles your yardage requirements but produces a blanket with more visual weight and body.

Changing Colors

When you finish your 2 rows for the day and the next day requires a different color, simply drop the current color and join the new one. Leave a tail of about 6 inches on both the old yarn and the new yarn for weaving in later. Many knitters weave in ends as they go — a few ends per week is much more manageable than 700-plus ends at the end of the year.

If you are using the same color for multiple consecutive days, there is no need to cut the yarn. Simply carry it up the side of the blanket, catching it loosely every few rows to keep the edge tidy.

Finishing

When December 31st is behind you, bind off all stitches loosely. A stretchy bind off — such as the Russian bind off or simply binding off with a needle one or two sizes larger — will keep your top edge consistent with the natural stretch of the garter fabric.

Weave in any remaining ends. Block your blanket if desired: wet blocking or steam blocking will even out the stitches and give the finished piece a more polished look, though garter stitch in worsted weight tends to look quite nice even unblocked.

Tips for Staying on Track All Year

A yearlong project is a commitment, and it is completely normal to fall behind sometimes. Life happens. Here are strategies that experienced temperature blanket knitters use to stay motivated and on track.

Keep your project visible. Store your blanket and yarn somewhere you pass every day — a basket in the living room, on the coffee table, next to your favorite chair. Out of sight really does mean out of mind with a daily project.

Set a time anchor. Some knitters do their rows every morning with coffee, others every evening before bed. Having a consistent ritual makes the daily rows feel like a natural part of your day rather than a chore you have to remember.

Don’t stress about catching up. If you miss a few days, look up the temperatures after the fact and just knit them all in one sitting. The blanket does not know — and it will still be accurate.

Join a community. There are active temperature blanket groups on Ravelry, Facebook, and Instagram where knitters share progress photos, color palette advice, and encouragement. Seeing other people’s projects in progress is genuinely motivating.

Take progress photos. Photograph your blanket every month or so. Watching it grow stripe by stripe is deeply satisfying, and you will love having a documented record of its evolution.

Customization Ideas

One of the best things about a temperature blanket is how infinitely customizable it is. Once you understand the basic framework, you can adapt it in dozens of ways.

Some knitters add a single contrasting row on the first of each month to act as a visual divider — this makes it easy to find specific months when you look at the finished piece. Others record memorable days with a small stitch marker left in the fabric or a note in their journal: “This row — first snowfall.” “This row — the day we moved into our house.”

You can also choose to track something other than temperature. Some crafters make “mood blankets” where they assign colors to emotions. Others track precipitation, UV index, or the time of sunrise. The underlying pattern structure works for any daily data you want to record.

If you are an experienced knitter, you can add a simple border — a few stitches of garter stitch on each side in a neutral color creates a clean, finished edge and keeps the sides from looking uneven as different yarn weights and dye lots shift slightly across the year.

Frequently Asked Questions

How much yarn will I actually need? This varies enormously based on your climate. If you live somewhere with mild, consistent temperatures, you may use mostly two or three colors and barely touch the rest. If you live somewhere with dramatic seasonal swings, your yarn usage will be much more evenly distributed. As a general rule, plan for about one skein (approximately 200–220 yards) per color as a starting point, and buy more of your most-used colors as the year progresses. Do not buy all your yarn at the beginning — you cannot predict which colors you will need the most.

What if a color gets discontinued mid-year? This is a real risk with any yearlong project. To reduce the chance of running out of a color and being unable to replace it, buy slightly more than you think you will need of each color at the start, and note the dye lot number on each skein. Dye lots can vary subtly, so having spares from the same lot is helpful.

Can I use different yarn brands for different colors? Yes, with some caveats. Mixing brands within the same weight category is generally fine, but significant differences in thickness can affect how your rows look. Try to stay within the same weight and similar fiber content across your palette if possible. A swatch or two can tell you quickly whether two yarns will play well together.

Can beginners really do this? Absolutely. If you can cast on, knit, and bind off, you can make a temperature blanket. The only stitch you need is the knit stitch. This project is, in fact, a wonderful way for new knitters to build speed and confidence, because you are knitting the same stitch thousands of times across the year. By December you will be a noticeably faster and more comfortable knitter than you were in January.

A Note on Starting Mid-Year

January 1st is the traditional start date, but there is nothing stopping you from beginning a temperature blanket any day of the year. Some knitters start on their birthday, their anniversary, or simply the day they discover the concept and decide they cannot wait until next January. A blanket that runs from, say, April 1st to March 31st is just as valid and just as beautiful. Your blanket, your rules.

Why This Project Is Worth It

At the end of a year with a temperature blanket, you will have created something that cannot be bought or replicated. The yarn you chose, the colors that correspond to your particular city, the specific temperatures of your specific year — it all comes together into an object that is entirely yours.

People who finish temperature blankets often say it is one of the most meaningful things they have ever made. They keep them for decades. They show them to their children and explain each color. They remember the winter storm and the unexpected warm spell and the long, golden autumn by the stripes those seasons left in the fabric.

This is what knitting can be at its most purposeful: not just a craft, but a way of paying attention to your life, one row at a time.

We hope this free pattern gives you everything you need to cast on with confidence. If you make a temperature blanket using this pattern, we would love to see it — tag us on Instagram or share your project in the Fifty Four Ten Studio community. Happy knitting, and here’s to a whole year of beautiful rows ahead.

Pattern and content by Fifty Four Ten Studio. This pattern is free for personal use. Please do not reproduce or sell this pattern without permission.