CADXChange

ResourcesDWG symbol libraries

Free weather chart symbols for AutoCAD (DWG): present weather, clouds, pressure tendency and wind barbs

Weather chart symbols: 176 ready-made AutoCAD blocks (DWG), free to download and use in your own projects, as a ZIP or one symbol at a time.

176 weather chart symbols at plotted size, 1 drawing unit = 1 mm, for synoptic charts, station models and teaching material: the 100 present weather symbols of the code table (ww 00 to 99: sky and haze, dust and sand, mist and fog, lightning and thunder, squalls and funnel clouds, events of the past hour, dust storms and drifting snow, fog and its trend, drizzle, rain, freezing precipitation, snow, ice needles, snow grains, ice pellets, showers and thunderstorms); the cloud types CL, CM and CH (nine each); the sky cover circles N 0 to 9; the past weather marks W 3 to 9; the nine pressure tendency traces; and the wind barbs from calm to 107 knots, with half barbs, full barbs and pennants. Each block carries its code and the wording of the code table.

Version 1.0 · updated October 22, 2026 · Check out what's changed

Download ZIPPreview in browser

Using AutoCAD 2017 or an earlier version? Download the 2010 format

Free to use and modify in your own projects, including commercial ones. The ZIP holds one plain DWG file in AutoCAD 2018 format and a README; no add-in needed. Provided as is, without warranty.

Related symbol libraries

All 176 symbols

176 of 176 symbols

Missing a symbol? Tell us which one.

Attributes for parts lists

Every block has the invisible attributes CODE (the code table and figure, for example ww 61), MEANING (the wording of the code table) and REMARKS. There is no visible tag, because a weather symbol is the mark itself. The name of the block is the code and a short description, for example 61 Rain, cont., slight.

Export the blocks of a chart with BlockSync to Excel to get a list of every code used on a sheet, with its meaning, for example to check a plotted station model against the observation or to prepare a legend. Check the list against the drawing and write corrections back in one run.

How to use the library

  1. Unzip the file and open the DWG. Copy the symbols you need into your plan, or drag the blocks in from DesignCenter (ADCENTER).
  2. The symbols are drawn at plotted size, 1 drawing unit = 1 mm, 8 to 12 mm high. Insert them at scale 1 on a chart drawn in millimetres; scale them with the chart if your chart uses another unit. Large marks such as the thunderstorm with a bracket are wider than the single marks, so leave room on the station model.
  3. Present weather, cloud, sky cover, past weather and pressure tendency marks are centred on the block origin, so you can snap them to the points of a station model. A wind barb starts at the station on the origin and its staff runs along -X: insert it and rotate it to the direction the wind comes from. The barbs stay on the same side of the staff as in the chart.
  4. In the wind barb group every block is one speed class in knots: calm (double circle), 1-2 kt (staff only), 3-7 kt (half barb), then one more full barb for every 5 knots, and a pennant for 50 knots. The blocks are sorted by speed, so you can pick the class from the name. The sky cover circles show the cover in tenths as in the chart (N 7 and N 8 are drawn filled, so they print filled).

About the symbols

The shapes follow the weather chart used with the international code tables (adapted from the U.S. National Weather Service and the World Meteorological Organization): code table 4677 for present weather, the cloud type tables CL, CM and CH, the sky cover and pressure tendency figures, and the wind barb scale in knots. The meaning in each block is the wording of that table.

The blocks are our own drawings, not copies of the chart or of an official publication, and the library is not certified. Use them for teaching, plotting and documents. If your weather service or your aviation authority prescribes its own forms or sizes, compare the shapes with its publication before you use them for operational charts.

What changed in each version

Version 1.0 · October 22, 2026

New symbols (176)

00 No cloud development · 01 Clouds dissolving · 02 Sky state unchanged · 03 Clouds forming · 04 Smoke reduces visibility · 05 Haze · 06 Widespread dust · 07 Dust or sand raised by wind · 08 Dust devils · 09 Dust or sand storm in sight · 10 Mist · 11 Shallow fog patches · 12 Shallow fog, continuous · 13 Lightning, no thunder · 14 Precip. not reaching ground · 15 Distant precipitation · 16 Precipitation near station · 17 Thunder, no precipitation · 18 Squalls · 19 Funnel clouds · 20 Drizzle, past hour · 21 Rain, past hour · 22 Snow, past hour · 23 Rain and snow, past hour · 24 Freezing rain, past hour · 25 Rain showers, past hour · 26 Snow showers, past hour · 27 Hail showers, past hour · 28 Fog, past hour · 29 Thunderstorm, past hour · 30 Dust storm easing · 31 Dust storm, no change · 32 Dust storm increasing · 33 Severe dust storm, easing · 34 Severe dust storm, steady · 35 Severe dust storm, rising · 36 Low drifting snow, slight · 37 Low drifting snow, heavy · 38 High drifting snow, slight · 39 High drifting snow, heavy · 136 more

Frequently asked questions

Which weather symbols are in the library?
The 100 present weather symbols (ww 00 to 99), the 27 cloud types of CL, CM and CH, the sky cover circles N 0 to 9, the past weather marks W 3 to 9 (W 0 to 2 have no symbol), the pressure tendency traces a 0 to 8 and 23 wind barbs from calm to 107 knots. Fronts, pressure centres and the station model layout itself are not in this library.
How do I put a wind barb on a station?
Insert the block at the station point and rotate it so that the staff points to the direction the wind comes from. The speed classes are sorted by knots: choose the block whose name has your speed, for example Wind 13-17 kt for a wind of 15 knots. In AutoCAD use the ROTATE command, or give the rotation angle when you insert the block.
Can I use the symbols in commercial projects?
Yes. They are free to use and modify in your own projects, including commercial ones. They are provided as is, without warranty.
Are these the official WMO symbols?
They follow the shapes of the chart that goes with the WMO code tables, but they are our own drawings and are not certified. The meaning stored in each block is the wording of the code table. Check the shapes against your own weather service publication if a chart has to follow it exactly.
Can I change a symbol or add attributes?
Yes. Open the DWG, edit a block with BEDIT to change it or add attributes, and save. To update drawings that already contain the block, run ATTSYNC or replace the block. Make a backup first: attribute values can be lost if ATTSYNC is used carelessly.
Where do I find a ready-made set of these symbols for AutoCAD?
AutoCAD itself ships only a small set of sample blocks, so a full symbol set has to come from a library. Download the ZIP on this page and open the DWG: every symbol is a block. Insert one with INSERT (Blocks palette, Libraries tab, then pick the DWG) or drag it from DesignCenter (ADCENTER). You can also download a single symbol on its own.

Count the symbols and build a parts list

Because ratings and part numbers are attributes, the symbols of a whole project can be counted and listed without opening the drawings. Export the blocks to Excel, total them with a pivot table and write corrections back in one run, with preview and backup.

See how to count blocks with BlockSync