What kind of pencil is used to draw the weather map?

Use a B-pencil. The "B" pen is used to mark and finalize the weather map, and to depict the dark part or shadow part in the weather map. Drawing pencils usually use two types of pens, B-type pencils are soft pencils, H-type pencils are hard pencils, and B-type pencils are divided into six types. From B to 6B, the bigger the number, the softer the refill and the lighter the color. When drawing special lines or details, you will choose a harder or softer pen as needed. Different degrees of hardness, color depth is also different.