Weather symbols (pictograms like ☀) in Unicode

There are several symbols defined in Unicode for weather pictograms:

https://en.wikipedia.org/wiki/Miscellaneous_Symbols

　☀　U+2600 BLACK SUN WITH RAYS   http://www.fileformat.info/info/unicode/char/2600/browsertest.htm
　☁　U+2601 CLOUD   http://www.fileformat.info/info/unicode/char/2601/browsertest.htm
　☂　U+2602 UMBRELLA   http://www.fileformat.info/info/unicode/char/2602/browsertest.htm
　☃　U+2603 SNOWMAN　　http://www.fileformat.info/info/unicode/char/2603/browsertest.htm
　⚡　U+26A1 HIGH VOLTAGE SIGN   http://www.fileformat.info/info/unicode/char/26A1/browsertest.htm
　⛄　U+26C4 SNOWMAN WITHOUT SNOW　http://www.fileformat.info/info/unicode/char/26c4/browsertest.htm
　⛅　U+26C5 SUN BEHIND CLOUD   http://www.fileformat.info/info/unicode/char/26C5/browsertest.htm
　⛆　U+26C6 RAIN   http://www.fileformat.info/info/unicode/char/26C6/browsertest.htm
　⛇　U+26C7 BLACK SNOWMAN   http://www.fileformat.info/info/unicode/char/26C7/browsertest.htm
　⛈　U+26C8 THUNDER CLOUD AND RAIN   http://www.fileformat.info/info/unicode/char/26C8/browsertest.htm
　🌩　U+1F329 CLOUD WITH LIGHTNING    http://www.fileformat.info/info/unicode/char/1f329/browsertest.htm

Some of them have origins in PC fonts in English-speaking countries.  Another source is ARIB STD B24 https://en.wikipedia.org/wiki/Broadcast_Markup_Language which is Japan's standard for TV subtitles.

If you cannot see above "characters", that's probably the problem in the text font in your web browser.  Images are available at:
https://ja.wikipedia.org/wiki/ARIB%E5%A4%96%E5%AD%97%E3%81%AE%E8%BF%BD%E5%8A%A0%E8%A8%98%E5%8F%B7%E4%B8%80%E8%A6%A7#.E5.A4.A9.E6.B0.97.E8.A8.98.E5.8F.B7