Inspired by
https://www.bewitchingstitch.com/2017/12/30/solid-granny-...

Trad granny square, one per day.
R1/centre : the month’s birthstone gem, yarn combined with a sparkly Gütermann thread
R2 : lowest temp
R3 : highest temp
R4 : joining colour (JAYG) - grey

I used a different colour per 2°Celsius from 0°C to 28°C. Separate colour used for anything under 0°C, likewise for 29°+ degrees, as these are extreme temps for where I live (Wales). Snow days had a white bobbly wool added to the centre gem/birthstone colour.

Months are separated by a full birthstone square. Final square is the joining colour and will have ‘2021’ crocheted on it.

Special days (birthdays/anniversaries) are marked with a sparkly light grey yarn instead of the joining yarn. I found that I needed to do the full final round (R4) on each ‘special’ square before joining adjacent squares to it, as otherwise it just didn’t look right.

I didn’t do a square a day - I recorded the daily high/low from a weather station online (time and date.com). I saved them up to do multiple squares in a session, because …. well, life and other projects ;)

Next time I might change the layout slightly, as the blanket is perhaps a little bit narrow - but I’ll just make the border wider on this one to compensate. Overall I’m really pleased with it - but also soooo glad it’s (nearly) finished!

FOR INFO:
Yarns/colours used for temps
(JCB = James C. Brett)

-0°C = stash dark purple
0°C = Hobbycraft Knitcraft Purple
1-2°C = Robin 053 Lavender
3-4°C = JCB Top Value 847 Turquoise
5-6°C = JCB Top Value 8461 Aqua
7-8°C = JCB Top Value 8419 Blue/Saxe
9-10°C = JCB Top Value 846 Petrol
11-12°C = Robin DK 071 Seagreen
13-14°C = Robin DK 016 Apple
15-16°C = JCB Top Value 8459 Yellow
17-18°C = JCB Top Value 8462 Gold
19-20°C = Robin DK 131 Cinnamon
21-22°C = stash pink
23-24°C = Robin DK 146 Berry
25-26°C = stash dark pink
27-28°C = Robin DK 032 Claret red
29+°C = SSDK 1035 burgundy

Yarns/threads used for birthstones:

JAN - Garnet - SSDK 1035 Burgundy + Gütermann 71 Metallic Black mix

FEB - Amethyst - Robin DK 093 Violet + Gütermann 571 Metallic Purple

MAR - Aquamarine - Knitting Essentials for Baby (blue/azure) + Gütermann 143 Metallic light blue

APR - Diamond - King Cole Diamond White +:Gütermann 41 Metallic Silver + Drops Glitter Silver

MAY - Emerald - James C. Brett 845 Emerald Green + Gütermann 235 Metallic Green

JUN - Pearl/Moonstone - James C. Brett Baby Marble BM9 + Gütermann Sulky Metallic 7001 Silver + Gütermann Sulky Metallic 7021 Prism White

JUL - Ruby - Robin DK 032 Claret + Gütermann 8020 Multicoloured Mixed Sliver

AUG - Peridot/Sardonyx - SSDK 1064 Meadow + Drops Glitter Gold

SEP - Sapphire/Lapis lazuli - James C. Brett 8417 Royal Blue + Gütermann 24 Metallic Gold

OCT - Opal/Tourmaline - Wendy DK 1089 Rainbow + Gütermann 8020 Mixed Sliver

NOV - Citrine/Topaz - James C. Brett 8467 Mustard + Drops Glitter Gold

DEC - Turquoise/Tanzanite - stash dark aqua + Gütermann 36 Metallic Copper/Bronze